MCQ Exam

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Question 1: What is the use of the array_combine() function in PHP?

A. To combine two arrays into one using one as keys and the other as values B. To combine two arrays into one using addition C. To split an array into multiple arrays D. To check if an array is empty

Question 2: What is the purpose of the array_intersect() function in PHP?

A. To return the intersection of two or more arrays B. To merge two arrays C. To split an array into multiple arrays D. To check if an array is empty

Question 3: What is the use of the array_diff() function in PHP?

A. To return the difference of two or more arrays B. To merge two arrays C. To split an array into multiple arrays D. To check if an array is empty

Question 4: What is PHP?

A. Personal Home Page B. Hypertext Preprocessor C. Private Home Page D. Hypertext Markup Language

Question 5: How do you create a hyperlink to another webpage?

A. <a href="http://www.example.com">Visit our webpage</a> B. <a>http://www.example.com</a> C. <link href="http://www.example.com">Visit our webpage</link> D. <a src="http://www.example.com">Visit our webpage</a>

Question 6: What is the correct HTML for creating a superscript text?

A. <sup>Superscript</sup> B. <super>Superscript</super> C. <sub>Superscript</sub> D. <sups>Superscript</sups>

Question 7: How do you select the first letter of a paragraph in CSS?

A. ::first-letter B. :first-letter C. first-letter D. ::letter

Question 8: What is the correct way to end a PHP statement?

A. . B. , C. ! D. ;

Question 9: What is the difference between fopen and file_get_contents for reading files in PHP?

A. fopen is used for reading binary files, while file_get_contents is used for reading text files B. fopen opens a file for writing, while file_get_contents opens a file for reading C. fopen returns a resource, while file_get_contents returns a string D. fopen can only read local files, while file_get_contents can read remote files

Question 10: Which CSS property is used to control the space between lines of text?

A. line-height B. text-spacing C. line-spacing D. text-line-height

Question 11: What is the difference between single quotes (') and double quotes ("") in PHP string literals?

A. Single quotes allow variable interpolation, double quotes do not B. Double quotes allow variable interpolation, single quotes do not C. There is no difference D. Single quotes are for single-line strings, double quotes are for multi-line strings

Question 12: Which CSS property is used to add rounded corners to an element?

A. border-radius B. rounded-corners C. corner-radius D. border-round

Question 13: Which HTML element is used to display a scalar measurement within a range?

A. <meter> B. <gauge> C. <value> D. <scale>

Question 14: How do you select an element with id "demo" in CSS?

A. #demo B. .demo C. *demo D. element.demo

Question 15: Write a PHP program to find the factorial of a given number using recursion

A. <?php function factorial($num) { if ($num <= 1) { return 1; } else { return $num * factorial($num - 1); } } $num = 5; echo factorial($num); ?> B. <?php function factorial($num) { if ($num <= 1) { return 1; } else { return $num * factorial($num - 1); } } $num = 5; echo factorial($num); ?> C. <?php function factorial($num) { if ($num <= 1) { return 1; } else { return $num * factorial($num - 1); } } $num = 5; echo factorial($num); ?> D. <?php function factorial($num) { if ($num <= 1) { return 1; } else { return $num * factorial($num - 1); } } $num = 5; echo factorial($num); ?>

Question 16: What is the purpose of CSS?

A. To define the presentation and layout of web pages. B. To define the structure of web pages. C. To define the behavior of web pages. D. To define the content of web pages.

Question 17: How do you select the first line of a paragraph in CSS?

A. ::first-line B. :first-line C. first-line D. ::line

Question 18: How do you add a comment in JavaScript?

A. // This is a comment B.  C. # This is a comment # D. /* This is a comment */

Question 19: What is the purpose of the array_merge() function in PHP?

A. To merge two or more arrays into a single array B. To split an array into multiple arrays C. To add elements to an array D. To check if an array is empty

Question 20: What is the CSS property used to set the list item marker style?

A. list-style-type B. marker-style C. list-marker D. item-style

Question 21: How do you select all paragraphs in CSS?

A. p { } B. paragraph { } C. select p { } D. all p { }

Question 22: What is the correct HTML for creating a checkbox?

A. <input type="checkbox"> B. <check>Checkbox</check> C. <input checkbox> D. <checkbox>Check me</checkbox>

Question 23: What is the purpose of the CSS position property?

A. To specify the positioning method of an element B. To control the text alignment C. To add padding to an element D. To set the background color

Question 24: Write a PHP program to check if a year is a leap year

A. <?php $year = 2024; if (($year % 4 == 0 && $year % 100 != 0) || $year % 400 == 0) { echo "Leap Year"; } else { echo "Not a Leap Year"; } ?> B. <?php $year = 2024; if (is_leap_year($year)) { echo "Leap Year"; } else { echo "Not a Leap Year"; } ?> C. <?php $year = 2024; if ($year % 4 == 0 && $year % 100 != 0) { echo "Leap Year"; } elseif ($year % 400 == 0) { echo "Leap Year"; } else { echo "Not a Leap Year"; } ?> D. <?php $year = 2024; if (($year % 4 == 0 && $year % 100 != 0) || $year % 400 == 0) { echo "Leap Year"; } else { echo "Not a Leap Year"; } ?>

Question 25: What is the correct HTML element for the largest heading?

A. <h1> B. <head> C. <h6> D. <heading>

Question 26: What is the CSS property used to add shadow to text?

A. text-shadow B. shadow-text C. font-shadow D. text-effect

Question 27: What is the CSS property used to control the style of the bullet in a list?

A. list-style-type B. bullet-style C. list-bullet-type D. style-type

Question 28: What is the correct HTML for creating a hyperlink to an email address?

A. <a href="mailto:example@example.com">Email me</a> B. <a link="example@example.com">Email me</a> C. <email>example@example.com</email> D. <a mailto="example@example.com">Email me</a>

Question 29: What is the purpose of the array_push() function in PHP?

A. To add one or more elements to the end of an array B. To remove elements from an array C. To split an array into multiple arrays D. To check if an array is empty

Question 30: What is the CSS property used to control the width of an element?

A. width B. element-width C. size D. element-size

Question 31: What does JavaScript stand for?

A. JavaScript B. JustScript C. JavaSource D. JScript

Question 32: What is the correct way to declare a JavaScript variable?

A. var x; B. variable x; C. x = var; D. x = variable;

Question 33: What is the JavaScript syntax for writing comments?

A. // This is a comment B.  C. # This is a comment # D. /* This is a comment */

Question 34: What is a return statement in PHP, and why is it used?

A. A statement that exits the script B. A statement that defines a variable C. A statement that prints output D. A statement that returns a value from a function

Question 35: What is the purpose of the require statement in PHP?

A. To include and evaluate an external file B. To define a constant C. To create a loop D. To declare a variable

Question 36: How do you select elements that are not hovered over in CSS?

A. :not(:hover) B. :not:hover C. :hovered D. :not

Question 37: Which HTML tag is used to define a hyperlink?

A. <a> B. <link> C. <href> D. <u>

Question 38: Write a PHP program to find the sum of all odd numbers from 1 to 100

A. <?php $sum = 0; for ($i = 1; $i <= 100; $i += 2) { $sum += $i; } echo $sum; ?> B. <?php $sum = 0; for ($i = 1; $i <= 100; $i += 2) { $sum += $i; } echo $sum; ?> C. <?php $sum = 0; for ($i = 1; $i <= 100; $i += 2) { $sum += $i; } echo $sum; ?> D. <?php $sum = 0; for ($i = 1; $i <= 100; $i += 2) { $sum += $i; } echo $sum; ?>

Question 39: How do you create an ordered list in HTML?

A. <ol> B. <ul> C. <li> D. <dl>

Question 40: What is the correct HTML for creating a hyperlink to another website?

A. <a href="http://www.example.com">Visit our website</a> B. <a>http://www.example.com</a> C. <a>www.example.com</a> D. <a link="http://www.example.com">Visit our website</a>

Question 41: How do you select all elements with a specific class in CSS?

A. .classname { } B. #classname { } C. :classname { } D. classname { }

Question 42: What is the correct HTML for creating a subscript text?

A. <sub>Subscript</sub> B. <super>Subscript</super> C. <subs>Subscript</subs> D. <sups>Subscript</sups>

Question 43: What is the CSS property used to set the opacity of an element?

A. opacity B. transparent C. visibility D. display

Question 44: How do you select elements that are in a specific state, like when hovered over, in CSS?

A. :hover B. :active C. :state D. :selected

Question 45: How do you create a JavaScript function that returns a value?

A. function myFunction() { return value; } B. function myFunction { return value; } C. myFunction = function() { return value; } D. def myFunction() { return value; }

Question 46: How do you open and close a file in PHP?

A. Using fopen() and fclose() B. Using open() and close() C. Using open_file() and close_file() D. Using read_file() and write_file()

Question 47: How do you access an element in an associative array in PHP?

A. $value = $array["key"]; B. $value = $array->get("key"); C. $value = $array->value("key"); D. $value = $array->element("key");

Question 48: Write a PHP program to count the number of words in a given sentence

A. <?php $sentence = "This is a sample sentence."; $words = explode(" ", $sentence); $count = count($words); echo $count; ?> B. <?php $sentence = "This is a sample sentence."; $count = str_word_count($sentence); echo $count; ?> C. <?php $sentence = "This is a sample sentence."; $words = split(" ", $sentence); $count = count($words); echo $count; ?> D. <?php $sentence = "This is a sample sentence."; $count = count_words($sentence); echo $count; ?>

Question 49: How do you select all links in CSS?

A. a { } B. links { } C. select a { } D. all a { }

Question 50: How do you create a function in PHP?

A. function myFunction() {} B. create_function("myFunction", ...) C. method myFunction() {} D. def myFunction():

Question 51: How do you add comments in CSS?

A. /* This is a comment */ B. // This is a comment // C.  D. # This is a comment #

Question 52: What is the difference between include and require in PHP?

A. "Include" includes a file, but "require" throws a fatal error if the file is not found. B. "Include" throws a fatal error if the file is not found, but "require" includes a file. C. "Include" and "require" are identical in PHP. D. "Include" and "require" are used for different purposes and cannot be compared.

Question 53: What is the purpose of the unset function in PHP?

A. To destroy a session B. To remove a variable C. To close a file D. To stop script execution

Question 54: How do you select the last line of a paragraph in CSS?

A. ::last-line B. :last-line C. last-line D. ::line

Question 55: What is the CSS property used to set the background color of an element?

A. background-color B. bg-color C. color-background D. background

Question 56: How do you select all elements with a specific attribute in CSS?

A. [attribute] { } B. #attribute { } C. :attribute { } D. attribute { }

Question 57: What is the CSS property used to change the text color of an element?

A. color B. text-color C. font-color D. text-style

Question 58: What is the ternary operator in PHP, and how is it used?

A. ? operator used for conditionals, e.g., $x = ($y == 1) ? "true" : "false"; B. : operator used for conditionals, e.g., $x = ($y == 1) ? "true" : "false"; C. -> operator used for accessing object properties D. :: operator used for static methods

Question 59: What is the difference between == and === in PHP?

A. == is used for assignment, === is used for comparison B. == performs type coercion, === does not perform type coercion C. == compares values, === compares references D. == and === are the same

Question 60: Write a PHP program to check if a number is prime

A. <?php $num = 7; $is_prime = true; for ($i = 2; $i <= sqrt($num); $i++) { if ($num % $i == 0) { $is_prime = false; break; } } if ($is_prime) { echo "Prime"; } else { echo "Not Prime"; } ?> B. <?php $num = 7; $is_prime = false; for ($i = 2; $i <= sqrt($num); $i++) { if ($num % $i == 0) { $is_prime = true; break; } } if ($is_prime) { echo "Prime"; } else { echo "Not Prime"; } ?> C. <?php $num = 7; $is_prime = true; for ($i = 2; $i <= $num / 2; $i++) { if ($num % $i == 0) { $is_prime = false; break; } } if ($is_prime) { echo "Prime"; } else { echo "Not Prime"; } ?> D. <?php $num = 7; $is_prime = false; for ($i = 2; $i <= $num / 2; $i++) { if ($num % $i == 0) { $is_prime = true; break; } } if ($is_prime) { echo "Prime"; } else { echo "Not Prime"; } ?>

Question 61: Write a PHP program to find the smallest element in an array

A. <?php $arr = [5, 10, 7, 2, 8]; $min = $arr[0]; foreach ($arr as $num) { if ($num < $min) { $min = $num; } } echo $min; ?> B. <?php $arr = [5, 10, 7, 2, 8]; $min = $arr[0]; foreach ($arr as $num) { if ($num < $min) { $min = $num; } } echo $min; ?> C. <?php $arr = [5, 10, 7, 2, 8]; $min = $arr[0]; foreach ($arr as $num) { if ($num < $min) { $min = $num; } } echo $min; ?> D. <?php $arr = [5, 10, 7, 2, 8]; $min = $arr[0]; foreach ($arr as $num) { if ($num < $min) { $min = $num; } } echo $min; ?>

Question 62: How do you comment out multiple lines of code in JavaScript?

A. /* This is a comment */ B. // This is a comment // C.  D. # This is a comment #

Question 63: Which event is triggered when a user clicks on an HTML element?

A. onclick B. onchange C. onmouseover D. onmouseclick

Question 64: What does HTML stand for?

A. Hyper Transfer Markup Language B. Hyper Text Makeup Language C. Hyper Text Markup Language D. High Text Markup Language

Question 65: Which HTML attribute is used to specify that an input field must be filled out?

A. required B. validate C. mandatory D. inputrequired

Question 66: How do you create a new paragraph in HTML?

A. <p> B. <br> C. <par> D. <newline>

Question 67: Which HTML tag is used to define an external style sheet?

A. <link> B. <style> C. <stylesheet> D. <css>

Question 68: Which CSS property is used to control the alignment of text?

A. text-align B. alignment C. text-style D. align-text

Question 69: What is the CSS property used to set the text transform of an element?

A. text-transform B. transform C. text-style D. style

Question 70: How do you create a for loop in JavaScript?

A. for (var i = 0; i < 5; i++) { } B. for (i = 0; i < 5; i++) { } C. for (i = 0; i < 5) { } D. loop (i = 0; i < 5; i++) { }

Question 71: What is the use of the array_flip() function in PHP?

A. To exchange keys and values in an array B. To remove elements from an array C. To split an array into multiple arrays D. To check if an array is empty

Question 72: What is the purpose of the HTML

Question 73: What is the CSS property used to set the margin on the top of an element?

A. margin-top B. top-margin C. margin D. element-margin-top

Question 74: How do you declare a function in JavaScript?

A. function myFunction() { } B. var myFunction() = function { } C. myFunction = function() { } D. def myFunction() { }

Question 75: What is the CSS property used to set the font style of an element?

A. font-style B. style C. font D. text-style

Question 76: What is the CSS property used to set the font weight of an element?

A. font-weight B. weight C. font-style D. style

Question 77: Write a PHP program to find the average of an array of numbers

A. <?php $arr = [5, 10, 15, 20]; $sum = array_sum($arr); $count = count($arr); $average = $sum / $count; echo $average; ?> B. <?php $arr = [5, 10, 15, 20]; $sum = array_sum($arr); $count = count($arr); $average = $sum / $count; echo $average; ?> C. <?php $arr = [5, 10, 15, 20]; $sum = array_sum($arr); $count = count($arr); $average = $sum / $count; echo $average; ?> D. <?php $arr = [5, 10, 15, 20]; $sum = array_sum($arr); $count = count($arr); $average = $sum / $count; echo $average; ?>

Question 78: How do you select elements that have a specific attribute with a specific value in CSS?

A. [attribute=value] { } B. [value=attribute] { } C. [attribute:value] { } D. [attribute: value] { }

Question 79: How do you select elements that are visited links in CSS?

A. :visited B. :link C. :active D. :hover

Question 80: What is the CSS property used to control the style of a border?

A. border-style B. style C. border D. border-type

Question 81: What is the result of the following expression: "5" + 2 in JavaScript?

A. 52 B. 7 C. Error D. 52.0

Question 82: What is the CSS property used to control the spacing between lines of text?

A. line-height B. text-spacing C. line-spacing D. spacing

Question 83: Write a PHP program to print the first 10 natural numbers

A. <?php for ($i = 1; $i <= 10; $i++) { echo $i . " "; } ?> B. <?php for ($i = 0; $i < 10; $i++) { echo ($i+1) . " "; } ?> C. <?php for ($i = 0; $i < 10; $i++) { echo $i . " "; } ?> D. <?php for ($i = 1; $i <= 10; $i++) { echo ($i+1) . " "; } ?>

Question 84: Which operator is used for strict equality in JavaScript?

A. === B. = C. == D. !==

Question 85: What is the CSS property used to set the maximum width of an element?

A. max-width B. maximum-width C. width-max D. element-max-width

Question 86: What is the CSS property used to set the border color of an element?

A. border-color B. color C. border D. element-border-color

Question 87: What is the CSS property used to change the font size of an element?

A. font-size B. text-size C. size D. font-style

Question 88: What is the JavaScript syntax for creating an object?

A. var person = {firstName:"John", lastName:"Doe"}; B. var person = [firstName:"John", lastName:"Doe"]; C. var person = (firstName:"John", lastName:"Doe"); D. var person = "firstName":"John", "lastName":"Doe";

Question 89: What is the correct HTML for inserting a background image?

A. <body style="background-image: url(background.jpg);"> B. <background src="background.jpg"> C. <bg-image>background.jpg</bg-image> D. <img src="background.jpg" alt="Background">

Question 90: How do you make a list that lists its items with numbers in HTML?

A. list-style-type: decimal; B. list-type: numbers; C. list-bullet-type: numbers; D. list: numbers;

Question 91: How do you call a function named "myFunction" in JavaScript?

A. myFunction() B. call myFunction() C. call function myFunction D. function myFunction()

Question 92: What is the latest stable version of PHP?

A. PHP 5 B. PHP 6 C. PHP 7 D. PHP 8

Question 93: What is the correct HTML for creating a video?

A. <video src="movie.mp4" controls></video> B. <video>movie.mp4</video> C. <movie src="movie.mp4"></movie> D. <video source="movie.mp4"></video>

Question 94: How do you select elements that are out of focus in CSS?

A. :not(:focus) B. :focus:not C. :focused D. :out-of-focus

Question 95: What is the correct HTML for creating a hyperlink to a webpage?

Question 96: What is the correct JavaScript syntax for referring to an external script called "script.js"?

A. <script src="script.js"> B. <script name="script.js"> C. <script href="script.js"> D. <link rel="script" href="script.js">

Question 97: What is the use of the array_push() function in PHP?

A. To add one or more elements to the end of an array B. To remove elements from an array C. To split an array into multiple arrays D. To check if an array is empty

Question 98: What is the correct HTML for creating a numbered list?

A. <ol> B. <ul> C. <li> D. <dl>

Question 99: How do you define a constant in PHP?

A. define("MY_CONSTANT", 42); B. $MY_CONSTANT = 42; C. constant MY_CONSTANT = 42; D. MY_CONSTANT = 42;

Question 100: What is an associative array in PHP?

A. An array with consecutive numeric keys B. An array with string keys C. An array with random keys D. An array with no keys

Question 101: What is the correct CSS syntax for making all the

elements bold?

A. p {font-weight: bold;} B. <p style="font-weight: bold;"> C. p {text-weight: bold;} D. p {style: bold;}

Question 102: Write a PHP program to find the second largest element in an array

A. <?php $arr = [5, 10, 7, 2, 8]; $first_max = $arr[0]; $second_max = $arr[1]; if ($second_max > $first_max) { $temp = $first_max; $first_max = $second_max; $second_max = $temp; } foreach ($arr as $num) { if ($num > $first_max) { $second_max = $first_max; $first_max = $num; } elseif ($num > $second_max && $num != $first_max) { $second_max = $num; } } echo $second_max; ?> B. <?php $arr = [5, 10, 7, 2, 8]; $first_max = $arr[0]; $second_max = $arr[1]; if ($second_max > $first_max) { $temp = $first_max; $first_max = $second_max; $second_max = $temp; } foreach ($arr as $num) { if ($num > $first_max) { $second_max = $first_max; $first_max = $num; } elseif ($num > $second_max && $num != $first_max) { $second_max = $num; } } echo $second_max; ?> C. <?php $arr = [5, 10, 7, 2, 8]; $first_max = $arr[0]; $second_max = $arr[1]; if ($second_max > $first_max) { $temp = $first_max; $first_max = $second_max; $second_max = $temp; } foreach ($arr as $num) { if ($num > $first_max) { $second_max = $first_max; $first_max = $num; } elseif ($num > $second_max && $num != $first_max) { $second_max = $num; } } echo $second_max; ?> D. <?php $arr = [5, 10, 7, 2, 8]; $first_max = $arr[0]; $second_max = $arr[1]; if ($second_max > $first_max) { $temp = $first_max; $first_max = $second_max; $second_max = $temp; } foreach ($arr as $num) { if ($num > $first_max) { $second_max = $first_max; $first_max = $num; } elseif ($num > $second_max && $num != $first_max) { $second_max = $num; } } echo $second_max; ?>

Question 103: How do you select elements with class "example" in CSS?

A. .example B. element.example C. #example D. *example

Question 104: How do you create a hyperlink that will send an email?

A. <a href="mailto:example@example.com">Send email</a> B. <a>mailto:example@example.com</a> C. <link href="mailto:example@example.com">Send email</link> D. <a src="mailto:example@example.com">Send email</a>

Question 105: What is the foreach loop used for in PHP?

A. To create a while loop B. To iterate through the values of an array C. To iterate through a fixed range of values D. To create a for loop

Question 106: What is the correct CSS syntax for changing the font of an element to Arial?

A. font-family: Arial, sans-serif; B. font: Arial, sans-serif; C. font-name: Arial; D. text-font: Arial;

Question 107: Write a PHP program to reverse a given string

A. <?php $str = "hello"; $reverse = strrev($str); echo $reverse; ?> B. <?php $str = "hello"; $reverse = reverse_string($str); echo $reverse; ?> C. <?php $str = "hello"; $reverse = str_reverse($str); echo $reverse; ?> D. <?php $str = "hello"; $reverse = reverse_str($str); echo $reverse; ?>

Question 108: What is the CSS property used to set the outline of an element?

A. outline B. element-outline C. border D. border-outline

Question 109: What is a parameter in a PHP function?

A. A variable that is passed to the function B. A variable declared inside the function C. A variable that is declared globally D. A constant defined within the function

Question 110: What is the purpose of the HTML

A. To draw graphics on the web page B. To create forms C. To display images D. To play audio and video

Question 111: What is the correct HTML for inserting a copyright symbol?

A. © B. © C. &(c) D. <copyright>

Question 112: What is the purpose of the include statement in PHP?

A. To include and evaluate an external file B. To define a constant C. To create a loop D. To declare a variable

Question 113: What is the correct HTML for creating a text area?

A. <textarea>Enter text here</textarea> B. <input type="textarea" value="Enter text here"> C. <input type="text" area="Enter text here"> D. <input area="Enter text here">

Question 114: How do you select the nth-of-type element in CSS?

A. :nth-of-type(n) B. ::nth-of-type(n) C. nth-of-type(n) D. :of-type(n)

Question 115: How do you add an element to an associative array in PHP?

A. $array["key"] = "value"; B. $array->add("key", "value"); C. $array->push("key", "value"); D. array_push($array, "value", "key");

Question 116: Write a PHP program to find the square root of a given number

A. <?php $num = 25; $sqrt = sqrt($num); echo $sqrt; ?> B. <?php $num = 25; $sqrt = square_root($num); echo $sqrt; ?> C. <?php $num = 25; $sqrt = sqr_root($num); echo $sqrt; ?> D. <?php $num = 25; $sqrt = sqrt($num); echo $sqrt; ?>

Question 117: How do you select elements that are being clicked in CSS?

A. :active B. :hover C. :clicked D. :focus

Question 118: What is the scope of a global variable in PHP?

A. Global B. Class C. Local D. Static

Question 119: What is the CSS property used to control the spacing between elements?

A. margin B. padding C. spacing D. border

Question 120: What is the purpose of the CSS float property?

A. To specify how an element should float B. To control the background color C. To add padding to an element D. To center-align text

Question 121: How do you select elements that have focus in CSS?

A. :focus B. :active C. :hover D. :selected

Question 122: How do you write a conditional statement for executing some code if "x" is equal to 5 in JavaScript?

A. if (x == 5) { } B. if x = 5 { } C. if x == 5 then { } D. if x = 5 then { }

Question 123: What is the purpose of the PHP function "echo"?

A. To display output to the browser B. To define a constant C. To create a loop D. To declare a variable

Question 124: Write a PHP program to find the sum of all even numbers from 1 to 100

A. <?php $sum = 0; for ($i = 2; $i <= 100; $i += 2) { $sum += $i; } echo $sum; ?> B. <?php $sum = 0; for ($i = 1; $i <= 100; $i++) { if ($i % 2 == 0) { $sum += $i; } } echo $sum; ?> C. <?php $sum = 0; for ($i = 1; $i <= 100; $i += 2) { $sum += $i; } echo $sum; ?> D. <?php $sum = 0; for ($i = 2; $i <= 100; $i++) { if ($i % 2 == 0) { $sum += $i; } } echo $sum; ?>

Question 125: Explain the concept of variable variable names in PHP.

A. Variable names that change dynamically B. Variables that are constants C. Variables with special names D. Variables that store other variables as their names

Question 126: What is the correct HTML for adding a background color?

A. <body style="background-color: yellow;"> B. <background>yellow</background> C. <bg-color>yellow</bg-color> D. <bg yellow>

Question 127: Which property is used to change the left margin of an element?

A. margin-left B. left-margin C. margin-left D. element-margin-left

Question 128: Which HTML tag is used to create a hyperlink?

A. <a> B. <link> C. <href> D. <u>

Question 129: Write a PHP program to sort an array in ascending order

A. <?php $arr = [5, 2, 8, 1, 7]; sort($arr); print_r($arr); ?> B. <?php $arr = [5, 2, 8, 1, 7]; $sorted_arr = array_sort($arr); print_r($sorted_arr); ?> C. <?php $arr = [5, 2, 8, 1, 7]; sort($arr); echo implode(" ", $arr); ?> D. <?php $arr = [5, 2, 8, 1, 7]; sort($arr); echo implode(",", $arr); ?>

Question 130: Which HTML element defines navigation links?

A. <nav> B. <navigation> C. <navbar> D. <navlink>

Question 131: What is the correct HTML for referring to an external style sheet?

A. <link rel="stylesheet" type="text/css" href="styles.css"> B. <style src="styles.css"> C. <link href="styles.css" type="text/css" rel="stylesheet"> D. <stylesheet src="styles.css">

Question 132: Which HTML tag is used to define a paragraph?

A. <p> B. <para> C. <pg> D. <par>

Question 133: What is the correct HTML for creating a copyright symbol?

A. © B. © C. &(c) D. <copyright>

Question 134: How do you select the nth child element in CSS?

A. :nth-child(n) B. ::nth-child(n) C. nth-child(n) D. :child(n)

Question 135: What is the purpose of the array_shift() function in PHP?

A. To remove and return the first element of an array B. To add elements to an array C. To split an array into multiple arrays D. To check if an array is empty

Question 136: What is the correct HTML for creating a line break?

A. <br> B. <line-break> C. <lb> D. <newline>

Question 137: What is the CSS property used to set the padding on all sides of an element?

A. padding B. element-padding C. padding-all D. padding-sides

Question 138: What is the CSS property used to set the height of an element?

A. height B. element-height C. size D. element-size

Question 139: What is the correct way to write an if statement in JavaScript?

A. if (x == 5) { } B. if x = 5 then { } C. if x = 5 { } D. if x == 5 then { }

Question 140: What is the correct HTML for creating a hyperlink to another website in a new tab?

A. <a href="http://www.example.com" target="_blank">Visit our website</a> B. <a href="http://www.example.com" target="_new">Visit our website</a> C. <a href="http://www.example.com" target="new">Visit our website</a> D. <a href="http://www.example.com" newtab>Visit our website</a>

Question 141: What is the correct HTML for creating an email link?

A. <a href="mailto:example@example.com">Email me</a> B. <a link="example@example.com">Email me</a> C. <email>example@example.com</email> D. <a mailto="example@example.com">Email me</a>

Question 142: Write a PHP program to find the length of a given string

A. <?php $str = "Hello, World!"; $length = strlen($str); echo $length; ?> B. <?php $str = "Hello, World!"; $length = str_length($str); echo $length; ?> C. <?php $str = "Hello, World!"; $length = length_str($str); echo $length; ?> D. <?php $str = "Hello, World!"; $length = strlen($str); echo $length; ?>

Question 143: What is the correct HTML for creating a table header?

A. <th> B. <td> C. <tr> D. <thead>

Question 144: How do you make a text input field read-only in HTML?

A. Add the "readonly" attribute B. Set the "read-only" property to true C. Add the "disable" attribute D. Set the "editable" property to false

Question 145: Write a PHP program to find the power of a number

A. <?php $base = 2; $exponent = 3; $result = pow($base, $exponent); echo $result; ?> B. <?php $base = 2; $exponent = 3; $result = power($base, $exponent); echo $result; ?> C. <?php $base = 2; $exponent = 3; $result = $base ** $exponent; echo $result; ?> D. <?php $base = 2; $exponent = 3; $result = pow($base, $exponent); echo $result; ?>

Question 146: What is the JavaScript operator for exponentiation?

A. ** B. ^ C. ^^ D. *

Question 147: Write a PHP program to find the number of vowels in a given string

A. <?php $str = "hello world"; $vowels = 0; $str = strtolower($str); for ($i = 0; $i < strlen($str); $i++) { if ($str[$i] == "a" || $str[$i] == "e" || $str[$i] == "i" || $str[$i] == "o" || $str[$i] == "u") { $vowels++; } } echo $vowels; ?> B. <?php $str = "hello world"; $vowels = 0; $str = strtolower($str); for ($i = 0; $i < strlen($str); $i++) { if ($str[$i] == "a" || $str[$i] == "e" || $str[$i] == "i" || $str[$i] == "o" || $str[$i] == "u") { $vowels++; } } echo $vowels; ?> C. <?php $str = "hello world"; $vowels = 0; $str = strtolower($str); for ($i = 0; $i < strlen($str); $i++) { if ($str[$i] == "a" || $str[$i] == "e" || $str[$i] == "i" || $str[$i] == "o" || $str[$i] == "u") { $vowels++; } } echo $vowels; ?> D. <?php $str = "hello world"; $vowels = 0; $str = strtolower($str); for ($i = 0; $i < strlen($str); $i++) { if ($str[$i] == "a" || $str[$i] == "e" || $str[$i] == "i" || $str[$i] == "o" || $str[$i] == "u") { $vowels++; } } echo $vowels; ?>

Question 148: Write a PHP program to check if a string is a palindrome

A. <?php $str = "racecar"; if ($str == strrev($str)) { echo "Palindrome"; } else { echo "Not Palindrome"; } ?> B. <?php $str = "racecar"; if ($str == reverse($str)) { echo "Palindrome"; } else { echo "Not Palindrome"; } ?> C. <?php $str = "racecar"; if ($str == str_reverse($str)) { echo "Palindrome"; } else { echo "Not Palindrome"; } ?> D. <?php $str = "racecar"; if ($str == reverse_str($str)) { echo "Palindrome"; } else { echo "Not Palindrome"; } ?>

Question 149: What is the CSS property used to set the text alignment within an element?

A. text-align B. alignment C. align-text D. text-alignment

Question 150: How do you write data to a file in PHP?

A. Using fwrite() B. Using file_write() C. Using write_file() D. Using put_contents()

Question 151: What does CSS stand for?

A. Cascading Style Sheets B. Creative Style Sheets C. Computer Style Sheets D. Colorful Style Sheets

Question 152: What is the purpose of the array_pop() function in PHP?

A. To remove and return the last element of an array B. To add elements to an array C. To split an array into multiple arrays D. To check if an array is empty

Question 153: How do you create an unordered list with square bullets?

A. list-style-type: square; B. list-type: square; C. list-bullet-type: square; D. list: square;

Question 154: Which HTML tag is used to define a table row?

A. <tr> B. <table> C. <td> D. <th>

Question 155: Which CSS property is used to control the transparency of an element?

A. opacity B. transparent C. visibility D. transparency

Question 156: What is the correct HTML for creating a horizontal line?

A. <hr> B. <line> C. <horizontal> D. <line-hr>

Question 157: What is the purpose of the array_key_exists() function in PHP?

A. To check if a specific key exists in an array B. To check if an array is empty C. To split an array into multiple arrays D. To remove a specific key from an array

Question 158: How do you concatenate two strings in PHP?

A. . B. + C. - D. &

Question 159: How do you select all headers (h1 to h6) in CSS?

A. h1, h2, h3, h4, h5, h6 { } B. headers { } C. select h1, h2, h3, h4, h5, h6 { } D. all h1, h2, h3, h4, h5, h6 { }

Question 160: How do you round a number to the nearest integer in JavaScript?

A. Math.round(x); B. round(x); C. x.round(); D. Math.floor(x);

Question 161: What is the correct HTML for creating a submit button?

A. <input type="submit" value="Submit"> B. <button type="submit">Submit</button> C. <submit>Submit button</submit> D. <input type="button" value="Submit">

Question 162: What is the CSS property used to set the border width of an element?

A. border-width B. width C. border D. element-border-width

Question 163: Write a PHP program to generate a random number between 1 and 100

A. <?php $rand = rand(1, 100); echo $rand; ?> B. <?php $rand = random(1, 100); echo $rand; ?> C. <?php $rand = generate_random(1, 100); echo $rand; ?> D. <?php $rand = random_num(1, 100); echo $rand; ?>

Question 164: What is the difference between include_once and include in PHP?

A. include_once includes a file only once, even if it is included multiple times B. include_once includes a file every time it is called C. include_once is used for HTML files, while include is used for PHP files D. include_once is used for including external libraries, while include is used for including application-specific files

Question 165: How do you call a function in PHP?

A. Using the "call" keyword B. By typing the function name C. By using the function name followed by parentheses D. Using the "execute" keyword

Question 166: Which CSS property is used to change the font size of an element?

A. font-size B. text-size C. font-style D. text-font

Question 167: How do you check if a variable is set in PHP?

A. Using the isset() function B. Using the set() function C. Using the check() function D. Using the empty() function

Question 168: Write a PHP program to reverse an array

A. <?php $arr = [1, 2, 3, 4, 5]; $reversed = array_reverse($arr); print_r($reversed); ?> B. <?php $arr = [1, 2, 3, 4, 5]; $reversed = reverse_array($arr); print_r($reversed); ?> C. <?php $arr = [1, 2, 3, 4, 5]; $reversed = array_reverse($arr); echo implode(" ", $reversed); ?> D. <?php $arr = [1, 2, 3, 4, 5]; $reversed = array_reverse($arr); echo implode(",", $reversed); ?>

Question 169: Which HTML tag is used to define a table?

A. <table> B. <tr> C. <td> D. <th>

Question 170: What is the purpose of the array_keys() function in PHP?

A. To return all the keys of an array as a new indexed array B. To return all the values of an array as a new indexed array C. To split an array into multiple arrays D. To check if an array is empty

Question 171: What is the correct HTML for creating a button?

A. <button>Click me</button> B. <input type="button" value="Click me"> C. <input type="submit" value="Click me"> D. <btn>Click me</btn>

Question 172: Which CSS property is used to change the text color of an element?

A. color B. text-color C. font-color D. text-style

Question 173: How do you create a new list item in HTML?

A. <li> B. <ul> C. <ol> D. <dl>

Question 174: Write a PHP program to find the Fibonacci series up to a given number

A. <?php $n = 10; $fib = [0, 1]; for ($i = 2; $i < $n; $i++) { $fib[$i] = $fib[$i - 1] + $fib[$i - 2]; } for ($i = 0; $i < $n; $i++) { echo $fib[$i] . " "; } ?> B. <?php $n = 10; $fib = [1, 1]; for ($i = 2; $i < $n; $i++) { $fib[$i] = $fib[$i - 1] + $fib[$i - 2]; } for ($i = 0; $i < $n; $i++) { echo $fib[$i] . " "; } ?> C. <?php $n = 10; $fib = [0, 1]; for ($i = 2; $i < $n; $i++) { $fib[$i] = $fib[$i - 1] + $fib[$i - 2]; } for ($i = 1; $i < $n; $i++) { echo $fib[$i] . " "; } ?> D. <?php $n = 10; $fib = [1, 1]; for ($i = 2; $i < $n; $i++) { $fib[$i] = $fib[$i - 1] + $fib[$i - 2]; } for ($i = 1; $i < $n; $i++) { echo $fib[$i] . " "; } ?>

Question 175: What is the purpose of the CSS display property?

A. To specify how an element should be displayed B. To control the font size C. To add borders to an element D. To change the text color

Question 176: What is the use of the array_values() function in PHP?

A. To return all the values of an array as a new indexed array B. To return all the keys of an array as a new indexed array C. To split an array into multiple arrays D. To check if an array is empty

Question 177: How do you include an external CSS file in an HTML document?

A. <link rel="stylesheet" type="text/css" href="styles.css"> B. <style src="styles.css"> C. <link href="styles.css"> D. <style type="text/css" src="styles.css">

Question 178: What is the purpose of the CSS z-index property?

A. To control the stacking order of elements B. To set the text size C. To control the text color D. To set the background color

Question 179: What is the CSS property used to set the text decoration of an element?

A. text-decoration B. decoration C. style D. deco-style

Question 180: How do you center an element horizontally in CSS?

A. margin: 0 auto; B. text-align: center; C. align: center; D. position: center;

Question 181: How do you change the text of an HTML element with id="demo" using JavaScript?

A. document.getElementById("demo").innerHTML = "Hello World!"; B. document.getElement("demo").text = "Hello World!"; C. document.getElementByName("demo").text = "Hello World!"; D. document.getElementByTagName("demo").innerHTML = "Hello World!";

Question 182: How do you make a background image repeat horizontally in CSS?

A. background-repeat: repeat-x; B. background-repeat: horizontal; C. background-repeat: repeat-h; D. background-repeat-x: true;

Question 183: What is the correct HTML for inserting an image?

A. <img src="image.jpg" alt="MyImage"> B. <image href="image.jpg" alt="MyImage"> C. <img alt="MyImage">image.jpg</img> D. <img alt="MyImage" src="image.jpg">

Question 184: Which CSS property is used to change the background color of an element?

A. background-color B. color C. bg-color D. background

Question 185: What is the purpose of the HTML element?

A. To provide metadata about the document B. To define a new section of the document C. To create a clickable link D. To specify the main content of the document

Question 186: Which HTML tag is used to define an unordered list?

A. <ul> B. <ol> C. <li> D. <dl>

Question 187: Write a PHP program to find the largest number among three numbers

A. <?php $a = 5; $b = 10; $c = 7; if ($a > $b && $a > $c) { echo $a; } elseif ($b > $a && $b > $c) { echo $b; } else { echo $c; } ?> B. <?php $a = 5; $b = 10; $c = 7; if ($a > $b) { if ($a > $c) { echo $a; } else { echo $c; } } else { if ($b > $c) { echo $b; } else { echo $c; } } ?> C. <?php $a = 5; $b = 10; $c = 7; if ($a > $b || $a > $c) { echo $a; } elseif ($b > $a || $b > $c) { echo $b; } else { echo $c; } ?> D. <?php $a = 5; $b = 10; $c = 7; if ($a > $b) { if ($a > $c) { echo $a; } else { echo $c; } } else { if ($b > $a) { echo $b; } else { echo $c; } ?>

Question 188: What is the correct HTML for creating a table?

A. <table> B. <tr> C. <td> D. <th>

Question 189: Write a PHP program to find the GCD of two numbers

A. <?php $num1 = 12; $num2 = 18; $gcd = gcd($num1, $num2); echo $gcd; ?> B. <?php $num1 = 12; $num2 = 18; $gcd = gcd($num1, $num2); echo $gcd; ?> C. <?php $num1 = 12; $num2 = 18; $gcd = find_gcd($num1, $num2); echo $gcd; ?> D. <?php $num1 = 12; $num2 = 18; $gcd = find_gcd($num1, $num2); echo $gcd; ?>

Question 190: How do you create a comment in HTML?

A.  B. // This is a comment // C. <comment>This is a comment</comment> D. # This is a comment #

Question 191: What is the purpose of the HTML element?

A. To contain meta-information about the document B. To define the main content of the document C. To specify the heading of the document D. To create a header section

Question 192: Which HTML tag is used to define an internal style sheet?

A. <style> B. <css> C. <stylesheet> D. <styling>

Question 193: How do you make a text italic in CSS?

A. font-style: italic; B. text-style: italic; C. italicize: true; D. style: italic;

Question 194: How do you make a list that lists its items with squares?

A. list-style-type: square; B. list-type: square; C. list-item-type: square; D. list: square;

Question 195: How do you create an ordered list with numbers in HTML?

A. <ol> B. <ul> C. <li> D. <dl>

Question 196: Write a PHP program to display "Hello, World!"

A. <?php echo "Hello, World!"; ?> B. <?php print "Hello, World!"; ?> C. <?php "Hello, World!"; ?> D. <?php printf("Hello, World!"); ?>

Question 197: How do you add an element to the end of an array in JavaScript?

A. array.push(element); B. array.append(element); C. array.add(element); D. array.insert(element);

Question 198: Which HTML tag is used to define a list item?

A. <li> B. <ul> C. <ol> D. <dl>

Question 199: What is the CSS property used to set the font family of an element?

A. font-family B. font C. family D. text-font

Question 200: Write a PHP program to find the largest element in an array

A. <?php $arr = [5, 10, 7, 2, 8]; $max = $arr[0]; foreach ($arr as $num) { if ($num > $max) { $max = $num; } } echo $max; ?> B. <?php $arr = [5, 10, 7, 2, 8]; $max = 0; foreach ($arr as $num) { if ($num > $max) { $max = $num; } } echo $max; ?> C. <?php $arr = [5, 10, 7, 2, 8]; $max = $arr[0]; foreach ($arr as $num) { if ($num > $max) { $max = $num; } } echo $max; ?> D. <?php $arr = [5, 10, 7, 2, 8]; $max = $arr[0]; for ($i = 1; $i < count($arr); $i++) { if ($arr[$i] > $max) { $max = $arr[$i]; } } echo $max; ?>

Question 201: How do you select elements that are checked (e.g., checkboxes) in CSS?

A. :checked B. :selected C. :active D. :hover

Question 202: What is the correct HTML for inserting a line break?

A. <br> B. <lb> C. <break> D. <newline>

Question 203: What is the scope of a local variable in PHP?

A. Global B. Class C. Local D. Static

Question 204: How do you create a class selector in CSS?

A. .classname { } B. #classname { } C. :classname { } D. classname { }

Question 205: What is the CSS property used to set the border radius of an element?

A. border-radius B. radius C. border D. element-border-radius

Question 206: How do you create a JavaScript function that takes parameters?

A. function myFunction(param1, param2) { } B. function myFunction = (param1, param2) => { } C. function myFunction(param1 param2) { } D. myFunction(param1, param2) = function { }

Question 207: What is the difference between require_once and require in PHP?

A. require_once includes a file only once, even if it is required multiple times B. require_once includes a file every time it is required C. require_once is used for HTML files, while require is used for PHP files D. require_once is used for including external libraries, while require is used for including application-specific files

Question 208: Which CSS property is used to control the width of an element?

A. width B. element-width C. control-width D. width-control

Question 209: What is the correct HTML for inserting a paragraph?

A. <p>This is a paragraph</p> B. <para>This is a paragraph</para> C. <pg>This is a paragraph</pg> D. <par>This is a paragraph</par>

Question 210: Write a PHP program to declare a variable named "num" and assign it the value 42

A. <?php num = 42; ?> B. <?php $num = 42; ?> C. <?php var num = 42; ?> D. <?php int num = 42; ?>

Question 211: Write a PHP program to find the factorial of a number

A. <?php $num = 5; $fact = 1; for ($i = 1; $i <= $num; $i++) { $fact *= $i; } echo $fact; ?> B. <?php $num = 5; $fact = 0; for ($i = 1; $i <= $num; $i++) { $fact += $i; } echo $fact; ?> C. <?php $num = 5; $fact = 1; for ($i = 2; $i <= $num; $i++) { $fact *= $i; } echo $fact; ?> D. <?php $num = 5; $fact = 0; for ($i = 2; $i <= $num; $i++) { $fact += $i; } echo $fact; ?>

Question 212: Which CSS property is used to control the space between the letters of text?

A. letter-spacing B. text-spacing C. letter-spacing D. line-spacing

Question 213: What is the result of the following expression: 5 % 2 in JavaScript?

A. 1 B. 2.5 C. Error D. 0.5

Question 214: How do you select elements that are disabled in CSS?

A. :disabled B. :enabled C. :active D. :checked

Question 215: How do you create a hyperlink in HTML?

A. <a href="http://www.example.com">Visit our website</a> B. <a>http://www.example.com</a> C. <link href="http://www.example.com">Visit our website</link> D. <a src="http://www.example.com">Visit our website</a>

Question 216: What does the "box model" in CSS refer to?

A. It describes how elements are laid out in terms of content, padding, border, and margin. B. It describes the colors used in a web page. C. It describes the layout of text within a box. D. It describes the hierarchy of HTML elements.

Question 217: Which PHP data type is used to store whole numbers?

A. float B. string C. integer D. boolean

Question 218: How do you select the last child element in CSS?

A. :last-child B. ::last-child C. last-child D. :last

Question 219: Write a PHP program to add two numbers, 5 and 3, and display the result

A. <?php echo 5 + 3; ?> B. <?php print 5 + 3; ?> C. <?php result = 5 + 3; echo result; ?> D. <?php printf("5 + 3 = %d", 5 + 3); ?>

Question 220: How do you declare a variable in PHP?

A. $variable B. @variable C. #variable D. variable

Question 221: What is the correct HTML for creating a text input field?

A. <input type="text"> B. <text>Text field</text> C. <input text> D. <textfield>Text field</textfield>

Question 222: What is the use of the array_unshift() function in PHP?

A. To add one or more elements to the beginning of an array B. To remove elements from an array C. To split an array into multiple arrays D. To check if an array is empty

Question 223: What is the correct HTML for creating a hyperlink?

A. <a href="http://www.example.com">Click here</a> B. <a>http://www.example.com</a> C. <link href="http://www.example.com">Click here</link> D. <a src="http://www.example.com">Click here</a>

Question 224: Which CSS property is used to create a shadow effect on text?

A. text-shadow B. shadow-text C. text-effect D. text-outline

Question 225: Which CSS property is used to make text bold?

A. font-weight B. bold C. text-weight D. font-bold

Question 226: Write a PHP program to check if a number is even or odd

A. <?php $num = 7; if ($num % 2 == 0) { echo "Even"; } else { echo "Odd"; } ?> B. <?php $num = 7; if ($num % 2 == 1) { echo "Even"; } else { echo "Odd"; } ?> C. <?php $num = 7; if ($num / 2 == 0) { echo "Even"; } else { echo "Odd"; } ?> D. <?php $num = 7; if ($num / 2 == 1) { echo "Even"; } else { echo "Odd"; } ?>

Question 227: How do you make a text input field required in HTML?

A. Add the "required" attribute B. Set the "mandatory" property to true C. Add the "validate" attribute D. Set the "required" property to true

Question 228: Which symbol is used to comment out a single line in PHP?

A. // B. /* C. -- D. ##

Question 229: What is the correct way to write a JavaScript array?

A. var colors = ["Red", "Green", "Blue"]; B. array colors = ["Red", "Green", "Blue"]; C. colors = "Red, Green, Blue"; D. var colors = "Red, Green, Blue";

Question 230: What is the result of the following expression: 5 + "5" in JavaScript?

A. 10 B. 55 C. Error D. 505

Question 231: What is the correct HTML for creating a drop-down list?

A. <select> B. <dropdown> C. <list> D. <options>

Question 232: What is the correct HTML for creating a radio button?

A. <input type="radio"> B. <radio>Radio button</radio> C. <input radio> D. <radiobutton>Radio button</radiobutton>

Question 233: Which CSS property is used to underline text?

A. text-decoration B. underline C. decoration D. text-underline

Question 234: Write a PHP program to find the sum of all prime numbers between 1 and 100

A. <?php $sum = 0; for ($num = 2; $num <= 100; $num++) { $is_prime = true; for ($i = 2; $i <= sqrt($num); $i++) { if ($num % $i == 0) { $is_prime = false; break; } } if ($is_prime) { $sum += $num; } } echo $sum; ?> B. <?php $sum = 0; for ($num = 2; $num <= 100; $num++) { $is_prime = true; for ($i = 2; $i <= sqrt($num); $i++) { if ($num % $i == 0) { $is_prime = false; break; } } if ($is_prime) { $sum += $num; } } echo $sum; ?> C. <?php $sum = 0; for ($num = 2; $num <= 100; $num++) { $is_prime = true; for ($i = 2; $i <= sqrt($num); $i++) { if ($num % $i == 0) { $is_prime = false; break; } } if ($is_prime) { $sum += $num; } } echo $sum; ?> D. <?php $sum = 0; for ($num = 2; $num <= 100; $num++) { $is_prime = true; for ($i = 2; $i <= sqrt($num); $i++) { if ($num % $i == 0) { $is_prime = false; break; } } if ($is_prime) { $sum += $num; } } echo $sum; ?>

Question 235: How do you select the first child element in CSS?

A. :first-child B. ::first-child C. first-child D. :first

Question 236: How do you check if a file exists in PHP?

A. Using the file_exists() function B. Using the is_file() function C. Using the exists() function D. Using the check_file() function

Question 237: How do you group multiple selectors in CSS?

A. Separate them with commas B. Group them in curly braces C. Separate them with semicolons D. Group them in square brackets

Question 238: Write a PHP program to remove duplicates from an array

A. <?php $arr = [1, 2, 2, 3, 4, 4, 5]; $unique_arr = array_unique($arr); print_r($unique_arr); ?> B. <?php $arr = [1, 2, 2, 3, 4, 4, 5]; $unique_arr = remove_duplicates($arr); print_r($unique_arr); ?> C. <?php $arr = [1, 2, 2, 3, 4, 4, 5]; $unique_arr = array_unique($arr); echo implode(" ", $unique_arr); ?> D. <?php $arr = [1, 2, 2, 3, 4, 4, 5]; $unique_arr = array_unique($arr); echo implode(",", $unique_arr); ?>

Question 239: Write a PHP program to find the sum of digits of a given number

A. <?php $num = 12345; $sum = 0; while ($num != 0) { $sum += $num % 10; $num = (int)($num / 10); } echo $sum; ?> B. <?php $num = 12345; $sum = sum_digits($num); echo $sum; ?> C. <?php $num = 12345; $sum = 0; while ($num != 0) { $sum += $num % 10; $num = (int)($num / 10); } echo $sum; ?> D. <?php $num = 12345; $sum = 0; for ($i = 0; $i < strlen($num); $i++) { $sum += $num[$i]; } echo $sum; ?>

Question 240: How do you select an element by its ID in CSS?

A. #idname { } B. .idname { } C. :idname { } D. idname { }

Question 241: Write a PHP program to find the LCM of two numbers

A. <?php $num1 = 12; $num2 = 18; $lcm = ($num1 * $num2) / gcd($num1, $num2); echo $lcm; ?> B. <?php $num1 = 12; $num2 = 18; $lcm = ($num1 * $num2) / lcm($num1, $num2); echo $lcm; ?> C. <?php $num1 = 12; $num2 = 18; $lcm = ($num1 * $num2) / common_multiple($num1, $num2); echo $lcm; ?> D. <?php $num1 = 12; $num2 = 18; $lcm = ($num1 * $num2) / gcd($num1, $num2); echo $lcm; ?>

Question 242: Write a PHP program to check if a string is a valid email address

A. <?php $email = "user@example.com"; if (filter_var($email, FILTER_VALIDATE_EMAIL)) { echo "Valid Email"; } else { echo "Invalid Email"; } ?> B. <?php $email = "user@example.com"; if (validate_email($email)) { echo "Valid Email"; } else { echo "Invalid Email"; } ?> C. <?php $email = "user@example.com"; if (is_valid_email($email)) { echo "Valid Email"; } else { echo "Invalid Email"; } ?> D. <?php $email = "user@example.com"; if (filter_var($email, FILTER_VALIDATE_EMAIL)) { echo "Valid Email"; } else { echo "Invalid Email"; } ?>