CBSE Class 10 Computer Application Sample Paper 2026 27 with Solutions PDF Download

Section-A (1 to 12) 12 x 1 = 12 Marks

1. Which of the following is responsible for requesting a web page from a web server? [1 Mark]
A. Web Browser
B. Web Page
C. HTML
D. SMTP

Answer: A. Web Browser

Teacher's Note:
a) A web browser is client software that sends requests to a web server to fetch pages.
b) Do not confuse the browser (a program) with the web page (content it displays).

2. Identify the protocol that provides a secure, encrypted channel for remote login over an insecure network. [1 Mark]
A. TELNET
B. SSH
C. HTTP
D. TCP

Answer: B. SSH

Teacher's Note:
a) SSH (Secure Shell) encrypts the entire remote login session.
b) TELNET performs a similar job but sends data in plain text, so it is not secure.

3. Which internet service allows users to participate in real-time text-based communication? [1 Mark]
A. E-learning
B. Chat
C. E-Groups
D. News groups

Answer: B. Chat

Teacher's Note:
a) Chat services allow instant, real-time text conversation between users.
b) E-groups and newsgroups are used for posting messages that others read later, not real-time chat.

4. Which attribute of the <img> tag is used to specify the path of the image to be displayed? [1 Mark]
A. href
B. src
C. link
D. source

Answer: B. src

Teacher's Note:
a) The src (source) attribute gives the file path or URL of the image.
b) href is used with the anchor tag for hyperlinks, not with images.

5. Anish wants to merge three cells of a single row in an HTML table. Which attribute should he use? [1 Mark]
A. rowspan
B. colspan
C. width
D. align

Answer: B. colspan

Teacher's Note:
a) colspan merges cells horizontally across columns in the same row.
b) rowspan merges cells vertically across rows, so it would not help here.

6. Which of the following is a valid example of a Web Address (URL)? [1 Mark]
A. student@school.com
B. 192.168.1.1
C. https://www.ncert.nic.in
D. C:/Documents/index.html

Answer: C. https://www.ncert.nic.in

Teacher's Note:
a) A valid URL must start with a protocol like https:// followed by a domain name.
b) Option A is an email address and option D is a local file path, not a web address.

7. The process of transferring a file from our local computer to a remote web server is called: [1 Mark]
A. Downloading
B. Uploading
C. Browsing
D. Retrieving

Answer: B. Uploading

Teacher's Note:
a) Uploading sends files from your computer to a server.
b) Downloading is the exact opposite - copying a file from a server to your computer.

8. The set of rules and manners that should be followed while communicating online is known as: [1 Mark]
A. Cyber Crime
B. Netiquettes
C. Digital Divide
D. Software License

Answer: B. Netiquettes

Teacher's Note:
a) Netiquettes are the good manners or etiquette followed on the internet.
b) Cyber crime refers to illegal online acts, which is different from etiquette rules.

9. Which of the following refers to the ownership and legal rights over digital assets such as online content, videos, and music? [1 Mark]
A. Netiquettes
B. Digital Property Rights
C. Freedom of Information
D. E-commerce Fraud

Answer: B. Digital Property Rights

Teacher's Note:
a) Digital Property Rights protect ownership of digital assets like videos, music and content.
b) Netiquettes are about behaviour online, not legal ownership.

10. State whether the following statement is True or False:
The World Wide Web (WWW) and the Internet are exactly the same thing. [1 Mark]

Answer: False.

Teacher's Note:
a) The Internet is the physical network of interconnected computers.
b) The WWW is a service that runs on the internet, made up of linked web pages accessed using HTTP.

Q-11 and Q-12 are Assertion (A) and Reason (R) Type questions. Choose the correct option as:

11. Assertion (A): A Web Browser is a software application used to access information on the World Wide Web.
Reason (R): Google Chrome and Mozilla Firefox are examples of web development software. [1 Mark]
A. Both A and R are True, and R correctly explains A.
B. Both A and R are True, but R does not correctly explain A.
C. A is True, but R is False.
D. A is False, but R is True.

Answer: C. A is True, but R is False.

Teacher's Note:
a) Chrome and Firefox are web browsers used to access the web, not tools used to develop websites.
b) Web development software includes tools used to build websites, like code editors.

12. Assertion (A): SMTP is used by the receiver to download emails from the mail server.
Reason (R): POP3 is a protocol designed for retrieving emails from a remote server to a local client. [1 Mark]
A. Both A and R are True, and R correctly explains A.
B. Both A and R are True, but R does not correctly explain A.
C. A is True, but R is False.
D. A is False, but R is True.

Answer: D. A is False, but R is True.

Teacher's Note:
a) SMTP is used to send emails, not to download them.
b) POP3 (and IMAP) are the protocols actually used to retrieve or download emails to a client.

Section-B (13 to 19) 7X2 = 14 Marks

13. Explain the purpose of the vlink and alink attributes used within the <body> tag. [2 Marks]

Answer:
1. vlink (Visited Link) sets the colour of a hyperlink that the user has already clicked or visited.
2. alink (Active Link) sets the colour of a link at the exact moment it is being clicked.

Teacher's Note:
a) Remember vlink is for "already visited" links.
b) alink is temporary and shows only while the click is happening.

14. A A school is developing a digital learning platform where students can submit projects and communicate with teachers online. The school wants to ensure that the system is efficient, reliable, and secure for sending and receiving files. A student is required to send an electronic project report as an email attachment to the teacher.
Based on the given scenario, answer the following questions:
a. Identify the protocol used for sending emails and justify your answer with one appropriate reason.
b. Explain one possible problem that could occur if an unsuitable or insecure protocol is used, and suggest one measure the school can implement to ensure secure email communication. [2 Marks]

Answer:
a. The protocol used is SMTP (Simple Mail Transfer Protocol). It is the standard protocol for sending emails from a sender's client to the recipient's mail server and it supports attachments, which makes it suitable for sending the project report.
b. If an insecure protocol is used, the messages could be intercepted or read by unauthorized users. To prevent this, the school should implement strong authentication for student email accounts.

Teacher's Note:
a) Keep SMTP linked only to sending, not receiving, emails.
b) Any one valid problem and any one valid security measure are enough to score full marks.

OR

B What do you understand by the term web-address? How is it different from an email address? [2 Marks]

Answer:
1. A web address (URL) is used to locate a website or a resource on the internet.
2. It is different from an email address because a web address only points to a webpage, while an email address is used to send and receive emails between users.

Teacher's Note:
a) URL stands for Uniform Resource Locator.
b) An email address always contains the "@" symbol along with a domain name.

15. What is the significance of the alt attribute in the <img> tag? Provide one scenario where it is useful. [2 Marks]

Answer:
1. The alt (alternate text) attribute provides a textual description of an image.
2. It is useful when the image fails to load, for example due to a slow internet connection, because the alt text is displayed in its place so the user still understands what the image represents.

Teacher's Note:
a) alt also helps screen readers describe images to visually impaired users.
b) Always write a short, meaningful description inside alt, not a random word.

16. A Write the HTML code to embed an audio file named song.mp3 into a webpage. Ensure that the audio plays automatically. [2 Marks]

Answer:
<audio src="song.mp3" autoplay controls></audio>

Teacher's Note:
a) The autoplay attribute makes the audio start playing on its own when the page loads.
b) The controls attribute adds play, pause and volume buttons for the user.

OR

B Write the HTML code snippet to create an Ordered List of the top three winners of a competition. However, the list should start numbering from '4' instead of '1'. List items are as shown below
(4. Rahul, 5. Sneha, 6. Amit) [2 Marks]

Answer:
<ol start="4">
<li>Rahul</li>
<li>Sneha</li>
<li>Amit</li>
</ol>

Teacher's Note:
a) The start attribute of <ol> decides the number the list begins from.
b) Each list item still uses the ordinary <li> tag; only the starting number changes.

17. How can we create a hyperlink that directly opens the user's email client to send an email to "info@school.com"? Write the syntax. [2 Marks]

Answer:
1. We use the mailto scheme inside the href attribute of an anchor (<a>) tag.
2. Syntax: <a href="mailto:info@school.com">Contact Us</a>

Teacher's Note:
a) mailto: must be written exactly, followed directly by the email address with no space.
b) Clicking such a link opens the user's default email application with the address pre-filled.

18. A Explain the purpose of the style attribute in HTML. Write an HTML statement to set the font color of a paragraph to "red" using inline CSS. [2 Marks]

Answer:
1. The style attribute is used to apply CSS rules directly to a single HTML element (inline CSS).
2. Code: <p style="color:red;">This is a paragraph.</p>

Teacher's Note:
a) Inline CSS affects only the element it is written on, not the whole page.
b) The property and value inside style must be separated by a colon and end with a semicolon.

OR

B Ravi is trying to make an online payment on an e-commerce website. He sees that the website's URL starts with "http". Should he continue with the payment? Give reasons to support your answer [2 Marks]

Answer:
1. No, Ravi should not continue with the payment because a URL starting with "http" is not secure.
2. "https" (with the added "s" for secure) encrypts the data being transferred, which is necessary for safe online transactions.

Teacher's Note:
a) Look for "https" and a padlock symbol before entering payment details on any website.
b) "http" without "s" sends data in plain, unencrypted form, which attackers can intercept.

19. What is e-Governance? Give one example of an e-Governance website in India. [2 Marks]

Answer:
1. e-Governance is the application of Information and Communication Technology (ICT) to deliver government services to citizens in a convenient, efficient and transparent manner.
2. Example: https://www.india.gov.in (National Portal of India), or DigiLocker, or Passport Seva.

Teacher's Note:
a) e-Governance reduces the need for citizens to visit government offices in person.
b) Any correctly named government service website is accepted as the example.

Section-C (20 to 23) 4X3 = 12 Marks

20. The following HTML statements contain errors. Rewrite the correct statements for each.
I. <a src="page2.html">Next Page</a>
II. <img href="flower.jpg" alt="Rose">
III. <ul type="A"><li>Item 1</li></ul> [3 Marks]

Answer:
1. <a href="page2.html">Next Page</a> (the anchor tag needs href, not src).
2. <img src="flower.jpg" alt="Rose"> (the image tag needs src, not href).
3. <ol type="A"><li>Item 1</li></ol> or <ul><li>Item 1</li></ul> (type="A" is valid only for an ordered list, <ol>, not an unordered list, <ul>).

Teacher's Note:
a) Always remember: anchor uses href, image uses src.
b) The type attribute with letters or numbers works only with ordered lists.

21. A. With reference to mobile technologies, briefly explain the following:
I. SMS
II. 3G
III. 5G [3 Marks]

Answer:
1. SMS (Short Message Service) is a text messaging service that lets users send and receive short text messages using mobile and internet-based systems.
2. 3G (Third Generation) is a mobile technology that introduced faster data transmission speeds, allowing video calling and mobile internet access.
3. 5G (Fifth Generation) is the latest cellular technology, offering ultra-low latency, massive connectivity for IoT devices and much faster download speeds.

Teacher's Note:
a) Mention one clear feature for each generation to score full marks.
b) Do not confuse SMS (a messaging service) with 3G/5G (network generations).

22. A I. Write the HTML code to embed a video file named documentary.mp4 into a webpage. The video should have a width of 400 pixels and a height of 300 pixels. It should display playback controls.
II. Which attribute of the <font> tag is used to specify the font family? [3 Marks]

Answer:
1. <video src="documentary.mp4" width="400" height="300" controls></video>
2. The face attribute of the <font> tag is used to specify the font family.

Teacher's Note:
a) width and height must be given in pixels without units in the attribute value.
b) The controls attribute is compulsory here to display playback buttons.

OR

B Write the HTML code to create a table with 2 rows and 2 columns and a border of 2. The first row should be the table header containing Roll No and Name, and the second row should contain the values 1 and Rahul respectively. [3 Marks]

Answer:
<table border="2">
<tr>
<th>Roll No</th>
<th>Name</th>
</tr>
<tr>
<td>1</td>
<td>Rahul</td>
</tr>
</table>

Teacher's Note:
a) <th> is used for header cells and <td> for normal data cells.
b) The border attribute on <table> controls the thickness of the table border.

23. A Write the HTML code to display the following statements on a webpage:
I. The chemical formula for Sulfuric Acid is H₂SO₄.
II. The Pythagorean theorem is a² + b² = c².
III. The coordinates are represented as (X₁, Y₁). [3 Marks]

Answer:
1. <p>The chemical formula for Sulfuric Acid is H₂SO₄.</p>
2. <p>The Pythagorean theorem is a² + b² = c².</p>
3. <p>The coordinates are represented as (X₁, Y₁).</p>

Teacher's Note:
a) <sub> pushes text below the line, useful for chemical formulas and coordinates.
b) <sup> raises text above the line, used for powers like squares and cubes.

Section-D (24 to 24) 1X4 = 4 Marks

24. A Write the complete HTML code to design a webpage with the following specifications:
(I) The title of the webpage should be "Healthy Living".
(II) Background color of the page should be "LightGreen".
(III) The main heading "Benefits of Yoga" should be in color "Blue".
(IV) The paragraph describing yoga (as shown above) with font size "5".
(V) An unordered list listing three benefits: "Flexibility", "Strength", "Peace". [4 Marks]

[Figure: Webpage preview with a light green background. A heading "Benefits of Yoga" is shown in blue and centered. Below it a paragraph reads "Yoga is a practice that connects the body, breath, and mind." Below the paragraph is a bulleted (unordered) list with three items: Flexibility, Strength, Peace.]

Answer:
<html>
<head>
<title>Healthy Living</title>
</head>
<body bgcolor="LightGreen">
<center><h1 style="color:blue;">Benefits of Yoga</h1></center>
<p><font size="5">Yoga is a practice that connects the body, breath, and mind.</font></p>
<ul>
<li>Flexibility</li>
<li>Strength</li>
<li>Peace</li>
</ul>
</body>
</html>

Teacher's Note:
a) The title tag text appears in the browser tab, not on the page body.
b) bgcolor is written as an attribute of the <body> tag to set the page background.
c) Each specification (I to V) carries marks, so missing even one tag can cost marks.

OR

B Write the complete HTML code to design a "Feedback Form" as shown here, according to the specifications given below:
I. Background Color: The page background should be "Pink".
II. Heading: "Customer Feedback" in the largest heading tag, center-aligned.
III. Form Elements:
Name: A Text box to accept the user's name.
Service Rating: Two Radio buttons with labels "Good" and "Bad".
City: A List box, showing four city names. [4 Marks]

[Figure: Feedback form on a pink background. A large heading "Customer Feedback" appears at the top. Below it, a "Name:" label with a text input box. Below that, "Service Rating:" with two radio buttons labeled "Good" and "Bad". Below that, "City:" with a list box showing four city names: Agra, New Delhi, Jaipur, Noida.]

Answer:
<html>
<body bgcolor="Pink">
<h1 align="center">Customer Feedback</h1>
<form>
Name: <input type="text" name="name"><br><br>
Service Rating:
<input type="radio" name="rating" value="good"> Good
<input type="radio" name="rating" value="bad"> Bad<br><br>
City:<br>
<select size="4">
<option>Agra</option>
<option>New Delhi</option>
<option>Jaipur</option>
<option>Noida</option>
</select><br><br>
</form>
</body>
</html>

Teacher's Note:
a) <h1> is the largest heading tag; the align attribute centers it as required.
b) Both radio buttons must share the same name attribute so only one can be selected at a time.
c) The size attribute of <select> decides how many options are visible without scrolling.

Section-E (25 to 26) 2X4 = 8 Marks

25. Rohan receives an email informing him that he has won a Rs. 1 Crore lottery prize. The email instructs him to click on a link and enter his bank details, including his account number, password, and OTP, in order to claim the reward. Just as Rohan is about to click the link, his sister intervenes and warns him.
I. Which type of online fraud is being attempted in this situation?
II. Why do you think the attacker requested the OTP?
III. Mention one precaution that can help prevent such fraud attempts.
IV. State one visual clue that usually indicates a fraudulent website or email. [4 Marks]

Answer:
1. This is an example of E-commerce Fraud (a phishing/lottery scam).
2. The attacker requested the OTP to gain unauthorized access to Rohan's account by bypassing security checks.
3. Precaution: Never share passwords or OTPs with anyone, including callers or emails claiming to be from a bank or company.
4. Visual clue: A suspicious or incorrect email address, or spelling mistakes in the message, usually indicate a fraudulent email or website.

Teacher's Note:
a) OTP is a one-time security code; sharing it is equivalent to handing over account access.
b) Genuine organisations never ask for passwords or OTPs over email or phone.
c) Always check the sender's email address and look for spelling errors before clicking any link.

26. Maya is a talented software developer who has created a new photo-editing application. She wants to share her software with the public so that other developers can learn from her code and improve upon it. However, she also wants to ensure that she receives credit as the original creator and that no one can claim her work as their own or sell it without her permission.
Based on the above information, answer the following questions:
I. Maya decides to release the software under a license that allows anyone to view, modify, and distribute the source code freely. What type of software is this called?
II. Which Intellectual Property Right (IPR) automatically protects Maya's original code from being copied or claimed by others without her permission?
III. If Maya wants to prevent others from using her software's unique name or logo to sell fake versions of her app, which form of protection should she register for?
IV. A competitor downloads Maya's code, removes her name, and sells it as their own product without making any changes. What is this unethical act called? [4 Marks]

Answer:
1. This is called Open Source Software (OSS) / Free and Open Source Software (FOSS).
2. Copyright automatically protects Maya's original code from being copied or claimed by others.
3. She should register for a Trademark to protect her software's unique name or logo.
4. This unethical act is called Plagiarism (also known as Software Piracy or Copyright Infringement).

Teacher's Note:
a) Open source means the source code is freely available to view, modify and share.
b) Copyright protects the code itself, while trademark protects names, logos and brand identity.
c) Removing the original creator's name and selling the work as one's own is a clear case of plagiarism.