ASSERTION REASON QUESTIONS

Assertion–Reason Questions for Class 11 & 12

Introduction

Assertion–Reason (AR) type questions are one of the most interesting and logical parts of exams. In Class 11 and 12, especially in Physics, Chemistry, and Biology, AR questions are frequently asked in Board exams, JEE, NEET and other entrance tests. These questions do not just test whether you have memorized a fact, but whether you can understand and logically connect concepts.

What is an Assertion–Reason Question?

In this type of question, you get two statements:

Assertion (A): A statement or claim that something is true.

Reason (R): Another statement that tries to explain why Assertion is true.

Then you have to choose the correct option:

1. Both A and R are true, and R is the correct explanation of A.
2. Both A and R are true, but R is NOT the correct explanation of A.
3. A is true, R is false.
4. A is false, R is true.

Why are AR Questions Important?

• Deep Understanding: They check whether you understand the concept and its reason.
• Critical Thinking: You need to judge carefully if the given reason is the exact cause or just a related fact.
• Exam Practice: Most competitive exams (JEE/NEET) use AR questions to test concept clarity.

Challenges for Class 11 & 12 Students

Sometimes both A and R are true, but they are unrelated. Sometimes Assertion is correct but Reason is misleading. Many times, you need previous knowledge + logic to answer correctly.

Tips:

• Revise fundamentals (laws, definitions, experiments).
• Practice maximum AR questions from NCERT and coaching materials.
• Always analyze why an option is wrong, not just why one is right.
• Use elimination method in exams to save time.

Example Question

Assertion (A): Acceleration due to gravity decreases with height.

Reason (R): Value of ‘g’ is inversely proportional to the square of the distance from Earth’s center.

Here, both A and R are true. R is the correct explanation of A. So, option (1) is correct.

How to Master AR Questions?

Start with NCERT solved examples. Make a notebook of AR questions chapter-wise. Solve previous year board + entrance exam papers. Discuss tricky AR questions with friends/teachers — this builds strong reasoning.

Final Words

Assertion–Reason questions are not just about knowledge, but about logical application of concepts. The more you practice, the more confidence you gain. For Class 11 and 12, these questions will improve your board performance and also boost your entrance exam preparation.

Click here – MilanPhysics Assertion Reason Questions

If you want, I can also prepare a downloadable PDF or a set of 20+ sample AR questions (with answers and short explanations) for Class 11 & 12 — tell me which subject (Physics / Chemistry / Biology) you prefer.