HTML Multiple Choice Questions (MCQs) and Answers

$To control the opacity of an element$

$To manipulate the position of an element$

$To change the way an element is displayed$

$To adjust the color of an element$

$id applies to only one element, class can be used on multiple elements$

$id is used for JavaScript, class is used for styling$

$id has higher specificity than class$

$Both A and C$

$By loading different websites on different devices$

$By changing the website\text{'}s content based on the device$

$By applying different styles based on device characteristics$

$By altering the site\text{'}s structure depending on user interaction$

$To increase the loading priority of the CSS file$

$To make a style inheritable by child elements$

$To override other styles regardless of specificity$

$To mark a style as crucial for browser compatibility$

$Changes the background of the body element$

$Sets the default font of the entire document to Arial, sans-serif$

$Makes the text in the body element bold$

$Applies a font only to the body element\text{'}s direct children$

$It creates a header with a fixed size and a dark background$

$It changes the color of all text in the header$

$It sets the width of the header to the width of its parent element$

$Both A and C$

$Centers the container on the page and sets its width to 80\%$

$Makes the container take up 80\% of the screen height$

$Applies a margin of 0 to all sides of the container$

$Creates a container with a fixed width and variable margin$

$Changes the color of all links to red$

$Makes a link red when it\text{'}s clicked$

$Turns a link red when the mouse hovers over it$

$Underlines a link when hovered$

$Distributes items in the container evenly$

$Aligns items vertically in the container$

$Spaces out items evenly in the container$

$Creates equal space around each item in the container$

$The CSS selector is incorrect$

$The background color is not valid$

$The div should have an id, not a class$

There is no issue

$The .nav class should use margin-left instead of float$

$The width of .nav should be less than 50\%$

$.content should have float: left too$

$No error$

$Missing value for border-radius$

$Incorrect syntax for color property$

$background-color should be background$

$No issue$

$display: inline-block cannot be used with width: 100\%$

$The class name in CSS does not match the HTML$

$width: 100\% is invalid for a div$

$No issue$

$Using the <link> tag$

$Using the <script> tag$

$Using the <javascript> tag$

$Using inline JavaScript in the HTML file$

$To structure web content$

$To style web pages$

$To add interactivity to web pages$

$To improve the website’s loading time$

$document.getElementByContent\left(\right)$

$document.getElementById\left(\right)$

$document.setContent\left(\right)$

$document.changeHTML\left(\right)$

$By changing the file structure of HTML$

$By externally linking to HTML elements$

$By dynamically altering HTML elements and their styles$

$By reloading the page with new HTML content$

$Adds new HTML elements$

$Updates the CSS of an element$

$Listens for events on HTML elements$

$Changes the attributes of HTML elements$

$To create asynchronous web applications$

$To increase the server loading time$

$To reload the whole webpage for content update$

$To animate HTML elements$

$By allowing synchronous web page updates$

$By enabling data retrieval without refreshing the page$

$By solely sending data to a server$

$By improving JavaScript execution speed$

$To provide a way to execute synchronous callbacks$

$To delay the execution of a JavaScript function$

$To handle asynchronous operations$

$To repeat an operation a set number of times$

$It will write "Hello, World!" on the document$

$It will create an alert saying "Hello, World!"$

$It will comment out "Hello, World!" in the HTML$

$It will delete all content and write "Hello, World!"$

$It changes the color of the button$

$It changes the background color of the body to blue$

$It creates a pop-up with the text "blue"$

$It changes the color of all text to blue$

$Creates a new div and adds it to the end of the document body$

$Deletes all div elements from the document body$

$Changes the style of the first div element$

$Reloads the body of the document$

$Changes the content of the element with id \text{'}demo\text{'} to \text{'}Welcome!\text{'}$

$Displays an alert with \text{'}Welcome!\text{'}$

$Changes the title of the document to \text{'}Welcome!\text{'}$

$Creates a new element with the text \text{'}Welcome!\text{'}$