The 15 one-mark questions from the March 2026 12th Standard Computer Applications public exam, in paper order, with the correct option marked and a short explanation.
Q1
Which of the following is a raster image file format?
- A. CDR
- B. JPEGCorrect
- C. SVG
- D. EPS
Explanation. JPEG stores an image as a grid of pixels, so it is a raster format; CDR, SVG and EPS are vector formats.
Q2
Place option is present in __________ menu.
- A. Layout
- B. FileCorrect
- C. Window
- D. Edit
Explanation. In PageMaker, File → Place is used to import text or graphics into the document.
Q3
__________ Command is used to modify the existing structure of database or table.
- A. DROP
- B. CREATE
- C. RENAME
- D. ALTERCorrect
Explanation. ALTER is the DDL command that changes the structure of an existing database or table, e.g. adding or modifying columns.
Q4
What is the extension of PHP file?
- A. .phpCorrect
- B. .html
- C. .ph
- D. .xml
Explanation. PHP script files are saved with the .php extension.
Q5
A __________ is a block of code that performs a specific task.
- A. class
- B. parameter
- C. label
- D. functionCorrect
Explanation. A function is a named block of code that performs a specific task and can be called whenever needed.
Q6
Which of the following is used to terminate the switch statement?
- A. goto
- B. return
- C. breakCorrect
- D. continue
Explanation. The break statement ends a case and exits the switch block; without it execution falls through to the next case.
Q7
What is the purpose of the ‘increment’ part of a for loop?
- A. To check the condition
- B. To initialize variables
- C. To execute the code block
- D. To update variablesCorrect
Explanation. In for (init; condition; increment), the increment part runs after each iteration and updates the loop variable.
Q8
What form control allows the user to select multiple values?
- A. check boxesCorrect
- B. text inputs
- C. radio buttons
- D. buttons
Explanation. Check boxes let the user tick any number of options, whereas radio buttons allow only one choice from a group.
Q9
Which version of PHP supports MySQLi functions?
- A. Version 4.0
- B. Version 2.0
- C. Version 5.0Correct
- D. Version 3.0
Explanation. The MySQLi (MySQL Improved) extension was introduced with PHP 5.0, and PHP 5 and later versions support it.
Q10
Which one of the following is not the social media?
- A. Twitter
- B. GmailCorrect
- C. Linkedin
- D. Facebook
Explanation. Gmail is an e-mail service; Twitter, LinkedIn and Facebook are social media platforms.
Q11
Wi-Fi stands for __________.
- A. Wired Optic Fibre
- B. Wireless FidelityCorrect
- C. Wireless Optic Fibre
- D. Wired Fidelity
Explanation. Wi-Fi stands for Wireless Fidelity, a wireless LAN technology.
Q12
Which of the following connector is called as Champ Connector?
- A. RJ61
- B. RJ11
- C. RJ45
- D. RJ21Correct
Explanation. The RJ-21 connector, used for multi-line telephone and network connections, is known as the champ (Amphenol) connector.
Q13
G2G systems are classified into:
- A. First wave and Second wave
- B. Internal facing and External facingCorrect
- C. Left facing and Right facing
- D. Internet and Extranet
Explanation. Government-to-Government systems are of two types: internal facing (within one government) and external facing (between governments).
Q14
UPI stands for __________.
- A. Unified Payments InterfaceCorrect
- B. Universal Payments Interface
- C. Union Payments Interface
- D. United Payments Interface
Explanation. UPI is the Unified Payments Interface developed by NPCI for instant bank-to-bank mobile payments.
Q15
How many Layers are specified in EDI architecture?
- A. 6
- B. 5
- C. 3
- D. 4Correct
Explanation. EDI architecture has four layers: semantic (application), standards translation, packing (transport) and physical network.
About this paper
These are the Part I one-mark multiple-choice questions from the March 2026 12th Standard Computer Applications public examination conducted by the Tamil Nadu Directorate of Government Examinations. The answers and explanations are prepared by TN Online Test for revision. Each question links to the textbook chapter it comes from, so you can go back to that chapter's notes and MCQs.
