12th Chemistry Chapter 3 – 2 Mark Questions (Important & Repeated – TN Board)
Prepare for exams with 12th Chemistry Chapter 3 (p-Block Elements-II) important 2 mark questions. This collection includes most repeated and previously asked questions based on TN Board exams, helping students revise key concepts quickly and score better.
p-Block Elements-II – 2 Mark Questions
Most Repeated 2 Marks
Note : Number next to questions tells, how many times it has been repeated in past few years
1.Write the properties of interhalogen compounds? Any 4 (5)
- The central atom will be the larger one
- It can be formed only between two halogen and not more than two halogens.
- Fluorine can’t act as a central metal atom being the smallest one
- Due to high electronegativity with small size fluorine helps the central atom to attain high coordination number
- They can undergo the auto ionization.
- They are strong oxidizing agents
2.Sulphuric acid is a dibasic acid.Prove it? (4)
It is a strong dibasic acid. as it forms two types of salts namely sulphates and bisulphates.

3.Give the uses of Helium? (3)
- It is much less denser than air and hence used for filling air balloons
- Helium and oxygen mixture is used by divers in place of air oxygen mixture. This prevents the painful dangerous condition called bends.
- Helium is used to provide inert atmosphere in electric arc welding of metals
- Helium has lowest boiling point hence used in cryogenics (low temperature science).
12th Chemistry Chapter 3 p-Block Elements-II Important 2 Marks Questions
Welcome to our collection of 12th Chemistry Chapter 3 p-Block Elements-II Important 2 Marks Questions and Answers prepared from previous year public question papers and important repeated board exam questions. These important questions are highly useful for Tamil Nadu State Board Class 12 students preparing for public examinations, school tests, and revision exams.
The chapter p-Block Elements-II contains several important short answer concepts related to halogens, noble gases, oxoacids, and interhalogen compounds. Many direct and repeated 2 mark questions are frequently asked from this chapter in Tamil Nadu public examinations.
Most Repeated 2 Mark Questions
- Interhalogen Compounds
- Sulphuric Acid is a Dibasic Acid – Prove It
- Uses of Helium
Why Practice 2 Mark Questions?
- Helps in quick revision before exams
- Improves conceptual understanding
- Covers repeated public exam questions
- Useful for school and board examinations
- Enhances answer writing speed and accuracy
Previous Year Public Exam Questions
The important 2 mark questions provided here are collected from previous year Tamil Nadu 12th Chemistry public question papers and important repeated board examination questions. These questions are commonly asked in public exams, quarterly exams, and revision tests.
Students are advised to practice writing short and precise answers with proper definitions, chemical equations, and important points to score full marks in the examination.
More 12th Chemistry Study Materials
Explore more useful Class 12 Chemistry study resources:
- Important 1 Mark Questions
- 3 Marks and 5 Marks Questions
- Book Back Answers
- Chapter Wise Notes
- Most Expected Questions
- Public Exam Study Materials
- Previous Year Question Papers with Answers
Regular practice of important questions from p-Block Elements-II helps students gain confidence and score high marks in the 12th Chemistry public examination.
