12th Chemistry p-Block Elements-I
Prepare for the Tamil Nadu Class 12 Chemistry Public Examination with carefully selected Chapter 2 – p-Block Elements-I Important 3 Mark Questions. These chapter-wise questions are compiled from the last six years of 1st Mid-Term, Quarterly, 2nd Mid-Term, Half-Yearly, Revision Exam 1, Revision Exam 2, and Tamil Nadu State Board Public Examination question papers to help students revise effectively and score high marks.
02
Chapter Number
3 Marks
50+ Question Papers
TN Board
Latest Syllabus
Most Repeated 3 Mark Questions
Curated from Previous Year Question Papers
1.Write the preparation of Borazole / inorganic benzene? (4)
When diborane treated with excess ammonia at low temperatures diborane gives diboranediammonate. On heating at higher temperatures it gives borazole.
2.What is catenation? describe briefly the catenation property of carbon? (4)
Catenation is an ability of an element to form chain of atoms.
Catenation property of carbon.
- The valency of element is greater than or equal to two,
- Element should have an ability to bond with itself
- The self bond must be as strong as its bond with other elements
- kinetic inertness of catenated compound towards other molecules.
Carbon possesses all the above properties and forms a wide range of compounds with itself and with other elements such as H, O, N, S and halogen
3.Write a short note on anomalous properties of the first element of p-Block? (2)
The following factors are responsible for this anomalous behaviour.
- Small size of the first member
- High ionisation enthalpy and high electronegativity
- Absence of d orbitals in their valance shell
4.Explain Mcafee process? (2)
Aluminium chloride is obtained by heating a mixture of alumina and coke in a current of chlorine.
On industrial scale it is prepared by chlorinating aluminium around 1000 K
12th Chemistry Chapter 2 Important 3 Marks Questions
Welcome to our collection of 12th Chemistry Chapter 2 Important 3 Marks Questions and Answers prepared from previous year public question papers and repeated board exam questions. These important questions are highly useful for Tamil Nadu State Board Class 12 students preparing for public examinations, revision tests, and school examinations.
Chapter 2 contains several conceptual and theory-based questions that are frequently asked in Tamil Nadu board examinations. Practicing important 3 mark questions regularly helps students improve conceptual understanding, answer presentation skills, and exam confidence.
Most Repeated 3 Mark Questions
- Preparation of Borazole (Inorganic Benzene)
- Catenation Property of Carbon
- Anomalous Properties of the First Element of p-Block
- McAfee Process
Benefits of Practicing 3 Mark Questions
- Improves conceptual clarity
- Helps understand important theory topics
- Covers repeated board exam questions
- Enhances answer writing skills
- Useful for quick public exam revision
Previous Year Public Exam Questions
The important 3 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 often asked directly or indirectly in public examinations and school tests.
Students are advised to practice writing answers with proper explanations, chemical equations, and important points to score maximum marks in the board examination.
More 12th Chemistry Study Materials
Explore more useful Class 12 Chemistry study resources:
- Important 1 Mark Questions
- 2 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 revision of important 3 mark questions helps students gain confidence and perform well in the 12th Chemistry public examination.
What’s Next?
Continue your journey through Lesson 2 – p-Block Elements-I. Master the important Five Mark and Two Mark questions, or explore the complete 12th Chemistry study guide covering every chapter.
