Conditional Rendering in React Complete Guide with Examples 2026

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  Conditional Rendering in React Conditional Rendering is one of the most useful concepts in React. It means showing different content on the screen depending on a condition. For example: If a user is logged in → show Logout If a user is not logged in → show Login If a student has passed → show Congratulations If a product is available → show Buy Now If data is loading → show Loading... React does not have a separate if rendering tag. Instead, we use normal JavaScript conditions such as if, the ternary operator, &&, and switch to decide what should appear in the UI.
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Top 25 HTML MCQ With Answers(part 4)

 

Top 20 HTML  MCQ With Answers

Top 20 HTML MCQ With Answers (part 4)


1] Which of the following is not a valid HTTP method?

a) GET
b)DELETE
c) FETCH
d)  POST 

Answer: c) FETCH

2] What is the primary purpose of a firewall?

a) To block unauthorized access
b) To increase browsing speed
c) To filter email spam
d) To optimize search results

Answer: a) a) To block unauthorized access

3]  What is "phishing"?

a) A method to steal personal information
b) A tool to browse the web
c) A way to protect sensitive data
d) A program for managing emails

Answer: a) A method to steal personal information

4] Which device connects a local network to the Internet?

a) Router
b) Firewall
c) Modem
d) Switch  

Answer: a) Router

5] What is the purpose of the <frame> tag in HTML?

a) To create hyperlinks
b) To divide the browser window into multiple sections
c) To add images to a web page
d) To embed videos in a web page 

Answer: b)   To divide the browser window into multiple sections


6]  Which tag is used to define a frameset in HTML?

a) <frameset>
b) <border> 
c) <iframe>
d) <frame>

Answer: a) <frameset>

7] Can the <frame> tag be used in HTML5?

a)  Only with JavaScript
b) No, it is obsolete in HTML5
c) Only in specific browsers
d) Yes, it is fully supported

Answer: b) No, it is obsolete in HTML5


8]What is the correct attribute to specify the URL of a document in a <frame>?

a) src
b) target
c) link
d) href 

Answer: a)  src


9] Which element replaces <frame> in HTML5?

a) <section>
b) <div>  
c) <iframe>
d) <main>

Answer: c)  <iframe>


10] What does the <frameset> tag replace in an HTML document?

a) <html>
b) <head>
c) <body>
d) <footer>

Answer: c) <body>

11] How do you define the number of columns in a frameset?

a) Using the cols attribute 
b) Using the rows attribute
c) Using the columns attribute
d) Using the span attribute

Answer: a ) Using the cols attribute 

12] How do you specify the size of frames in a frameset?

a) Using percentages or pixel values in the rows and cols attributes
b) Using CSS only
c) Using the width and height attributes
d) Using the size attribute

Answer: a) Using percentages or pixel values in the rows and cols attributes


13] What is the purpose of the noresize attribute in the <frame> tag?

a) To prevent resizing of the frame by the user
b) To disable the frame
c) To hide the frame
d) To prevent content loading

Answer: a)  To prevent resizing of the frame by the user


14] What attribute is used to specify the spacing between frames in a frameset?

a)  margin
b) framespacing
c)frameborder 
d) border

Answer: b) framespacing


15] Which attribute is used to add a border to a frame?

a) frameborder
b) border
c) style
d) style

Answer: a) frameborder

16] Can <frame> tags be nested inside other <frame> tags?

a) Yes, they can be nested
b) No, nesting is not allowed
c) Only in specific browsers
d) Only with an <iframe> tag

Answer: a) Yes, they can be nested


17] What does the scrolling attribute in a <frame> do?

a) Enables or disables scrollbars in the frame
b) Adds vertical scrollbars only
c) Adds horizontal scrollbars only
d) Locks the frame content

Answer: a) Enables or disables scrollbars in the frame


18] How do you provide alternative content for browsers that do not support frames?

a) Use the <noframes> tag
b) Use the <iframe> tag  
c) Use the <alt> tag
d) Use the <fallback> tag

Answer: a)  Use the <noframes> tag

 19] Which of the following is a valid value for the scrolling attribute in a <frame>?

a) auto, yes, or no
b) on or off
c) enable or disable 
d) true or false

Answer: a)  auto, yes, or no

20] Which attribute is used to give a frame a unique identifier?

a) name
b) id
c) title
d) target

Answer: a) name

21] What is the default value of the frameborder attribute?

a) 1
b) 0
c) true
d) auto

Answer: a


22] Which attribute is used to specify the name of a frame?

a) name
b) id
c) title
d) target

Answer: a

 23] What is the purpose of the <noframes> tag?

a) To provide alternative content for non-frame-supporting browsers
b) To create nested frames
c) To hide frames
d) To add scrollbars to frames

Answer: a


24] Which HTML version deprecated the <frame> tag?

a) HTML 4.0
b) HTML 5
c) XHTML 1.0
d) HTML 3.2

Answer: b

25] What does the target="_blank" attribute in a link do?

a) Opens the link in a new tab or window
b) Opens the link in the same frame
c) Redirects the user to a blank page
d) Prevents the link from opening

Answer: a

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