senior inter model CHEMISTRY paper 4

INTERMEDIATE-II YEAR CHEMISTRY

Model Paper
Time-3hours Maximum marks:60 

 SECTION_A 

 NOTE: Answer all questions. (10x2=20M) 

1. What is meant by the term ‘coordination number? Give the coordination

number of atoms in a body-centred cubic structure.

2. Calculate the amount of benzoic acid(C H COOH 6 5 ) required for preparing

250 mL of 0.15 M solution in methanol.

3. How is Eo (standard potential ) of the cell related to the equilibrium constant

Kc of the cell reaction ?

4. . CuSO 5H O 4 2 is blue in colour whileCuSO4

5.What is the role of cryolite in the metallurgy of aluminium?

6. Classify each of the following as being either a p-type or a n-type

semiconductor:

 (i) Ge doped with In (ii) B doped with Si.

7. What is addition polymer ? Give example.

8. What are the repeating monomeric units of Nylon-6 and Nylon-6,6?

9. Explain why the alkyl halides though polarare immiscible with water?

 is colourless. why?

10. Write the structures of the following organic halogen compounds.

 (i) 2-Chloro-3-methylpentane

 (ii) 1-Bromo-4-sec-butyl-2-methylbenzene

SECTION-B 

 NOTE: Answer any Six of the following (6x4m=24marks) 

11. State Raoult’s law. Calculate the vapour pressure of a solution containing

9gm of glucose in 162 gm of water at 298K. The vapour pressure of pure water at

298K is 17.535 mm of Hg.

12. What are emulsions? How are they classified? Give any two applications of

13. How is alumina separated from silica in the bauxite ore associated with

silica? Give equations.

14. How are xenon fluorides 2 4 6 X d eF , XeF an XeF obtained?

15. Explain Werner’s theory of coordination compounds with suitable examples.

16. Write the structures of maltose and Lactose. What are the hydrolysis

products of maltose and lactose?

17. What are analgesics and food preservatives? Give example.

18. Complete the following conversions: Aniline to

 i. Fluoro benzene ii.cyano benzene iii. Benzene and iv. Phenol

SECTION-C 

 NOTE: Answer any Two of the following questions. (8x2=16M) 

19.a) What is electrolysis? State Faraday’s First and second laws of electrolysis.

 b) Give a detailed account of the collision theory of reaction rates bimolecular

gaseous reactions


20. a) Describe the manufacture of H SO2 4 by contact process.

 b) How does Chlorine react with the following?

 a) Acidified FeSO4

21. a) Explain the following with an example.

 (i) Reimer-Tiemann reaction (ii) Williamson ether synthesis.

 b) Describe the following

 (i) Acetylation and (ii) Aldol condensation

 b) Iodine c) H S2

 d) Na S O 2 2 3