(SEM I) THEORY EXAMINATION 2021-22 CHEMISTRY

This question paper is divided into three sections: A, B, and C, and students must attempt all sections. Answers may be written in Hindi, English, or a mixed language as per convenience.

SECTION A — Very Short Answer (20 Marks)

Students must attempt all 10 questions, each carrying 2 marks.

Topics covered include:

Paramagnetism of H₂, H₂⁺, H₂⁻

Diatomic nature of Lithium vs monoatomic Beryllium

Distinguishing benzene & anthracene using UV spectroscopy

Vibrational modes in linear & non-linear molecules

Corrosion of iron nails

Salt bridge & its function

Gross vs Net calorific value

Temporary hardness removal by boiling

Biodegradable polymers

Functionality of monomers

SECTION B — Short Answer (30 Marks)

Students must attempt any 3 questions, each of 10 marks.

Topics include:

MO diagram of NO + bond order + magnetic behaviour

Fingerprint region in IR & structure prediction using absorption bands

Phase, component, degree of freedom + phase diagram of water

Resins & ion exchange process vs lime–soda process

Preparation, properties & applications of polymers: Buna-S, Dacron, Nylon-6, Neoprene

SECTION C — Long Answer (30 Marks)

Students must attempt one question from each of Q3, Q4, Q5, Q6, Q7.

Q3 – 10 Marks

Anisotropic crystals, classification & applications OR

Allotrope of carbon (Fullerene), preparation, structure & applications

Q4 – 10 Marks

Quantum theory of Raman spectroscopy + Stokes/anti-Stokes/Rayleigh lines OR

Electronic transitions in UV-Visible spectroscopy, solvent effects, absorption & intensity shifts

Q5 – 10 Marks

Primary vs secondary batteries + lead storage battery OR

Electrochemical theory of corrosion + anodic & cathodic inhibitors

Q6 – 10 Marks

Continuous cold lime–soda process + numerical OR

Bomb calorimeter, construction, working + GCV & NCV numerical

Q7 – 10 Marks

Polymer blends + Grignard reagent OR

Conducting polymers — classification & applications
 

This KAS-102 Chemistry question paper contains three sections covering molecular structure, spectroscopy, corrosion, polymers, phase rule, calorimetry, batteries, and water treatment. Students must answer very short, short, and long descriptive questions including numericals and applications.