Score better in Computer Science with these CBSE Class 12 MCQs, ready for 2026-27. Built chapter by chapter, they help Class 12 students get comfortable with the current exam pattern and sharpen problem-solving.
What Class 12 Students Gain From Computer Science MCQs
- Each Computer Science chapter has its own set, so you can check your understanding topic by topic.
- Accurate answers for every Computer Science MCQ, so you learn the logic behind each correct choice.
- Strictly based on the 2026 CBSE Computer Science textbook, and guidelines issued by CBSE.
- Covers several formats beyond regular MCQs - Assertion-Reasoning, Case-based, and Fill-in-the-blanks for Computer Science.
Class 12 Computer Science Chapter-wise MCQ Question Bank
Find the newest Computer Science question sets for 2026-27 below. A good way to check your own progress, and catch weak areas early, before exams.
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Quick Practice - Try a Few Questions First Pick a chapter below, answer a few questions instantly, then jump to the full set list for more. Q1.A binary file, unlike a text file, stores data: Answer: (b) In a format that is not directly human readable, often as raw byte sequences. Binary files are commonly used for images, executable programs, and structured data, since they can store information more compactly than plain text.
Q2.In Python, a binary file is typically opened using which mode? Answer: (b) 'rb'. The 'b' in this mode specifically tells Python to read the file as raw bytes rather than as decoded text.
Q3.Which Python module is commonly used to serialise and store Python objects directly into a binary file? Answer: (b) pickle. It converts Python objects into a byte stream that can be saved to a file and later reloaded back into the original object structure.
Q4.A key advantage of binary files over text files is: Answer: (b) They can store data more compactly and preserve exact data types. Since data isn't converted to and from text representation, binary storage can also be faster to read and write for certain applications.
Q5.Which of these is a common real world example of a binary file? Answer: (b) An image file, such as a .jpg or .png. These formats store pixel and colour data in a binary format that isn't meant to be read directly as text.
Q1.CSS is primarily used to control a webpage's: Answer: (b) Visual presentation and styling. It lets a developer separate a page's appearance, like colours, fonts, and layout, from its underlying HTML content.
Q2.Which CSS property is used to change the text colour of an HTML element? Answer: (b) color. It's one of the most basic and commonly used CSS properties for styling text.
Q3.JavaScript is primarily used in web development to add: Answer: (b) Interactivity and dynamic behaviour to webpages. It allows a page to respond to user actions, like clicks, without requiring a full page reload.
Q4.An external CSS file is typically linked to an HTML document using which tag? |