Padmashree Dr DY Patil Vidyapeeth 2007 B.E Computer Science Chemistry - exam paper

1. a. discuss hardness of water?

b. elaborate galvanic cells? provide example?

c) describe HCV and LCV?

d) elaborate polymers? Classify

e) elaborate semi conductors?

2. a) elaborate boiler troubles? discuss.

b) discuss Green house effect

3. Write short notes on

a) Break point chlorination

b) Desalination

c) BOD and COD

4. a) elaborate defects in solids? discuss

b) discuss about organic semiconductors

5. a) elaborate primary and secondary cells?

b) Write the working of lead acid battery?

I Year B.E./B.Tech Degree exams

CHEMISTRY

(Common to Mechanical, Civil, EEE, ECE Branches)

Time : 3 hours Maximum : 75 Marks

ques. one is compulsory

ans any 4 from ques. two to 8

13

6. a) Differentiate ranging from thermo plastics and thermosetting

plastics.

b) Write the synthesis, properties and uses of polyethylene and

PVC

7. a) How does the percentage of C,H,N,O,S computed in a fuel?

b) What is knocking? discuss.

8. Write short note on

a) setting and hardening of cement.

b) Lubricants

c) Paints and Varnishes.

Earning:   Approval pending.