Subject

Chemistry

Class

ICSE Class 12

Pre Boards

Practice to excel and get familiar with the paper pattern and the type of questions. Check you answers with answer keys provided.

Sample Papers

Download the PDF Sample Papers Free for off line practice and view the Solutions online.
Advertisement

 Multiple Choice QuestionsShort Answer Type

Advertisement

41.

Name the monomers and the type of polymerization in each of the following polymers:

(a) Polyester
(b) Bakelite


(a) Polyester
Monomer – ethylene glycol + terephthalic acid (or formulae of monomers)
Condensation polymer/ polymerisation


(b) Bakelite
Monomer – Phenol + Formaldehyde
Condensation polymer / polymerisation

1437 Views

Advertisement
42.

An organic compound A with molecular formula C2H7N on reaction with nitrous acid gives a compound B. B on controlled oxidation gives compound C. C reduces Tollen’s reagent to give silver mirror and D. B reacts with D in the presence of concentrated sulphuric acid to give sweet smelling compound E. Identify A, B, C, D and E. Give the reaction of C with ammonia.

607 Views

43.

Give balanced equations for the following reactions:
(i) How will you convert ethyl amine to methyl amine?

(ii) What is the effect of denaturation on the structure of proteins?

(iii) Name the nitrogen base residues present in DNA.

383 Views

44.

Give balanced equations for the following reactions: 
(i) Aniline is treated with nitrous acid and HCl at low temperature.
(ii) Acetyl chloride is treated with ethyl alcohol.
(iii) Formaldehyde is treated with ammonia

508 Views

Advertisement
Advertisement