TNPSC Question Paper-2007 Questions and answers

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11). Drinking soda is
A). neutral
B). amphoteric
C). basic
D). acidic
12). Which of the following is found in kidney stone?
A). Ammonium oxalate
B). Calcium oxalate
C). Potassium oxalate
D). Sodium oxalate
13). Which of the following is a laughing gas?
A). Carbon monoxide
B). Carbon dioxide
C). Nitrous oxide
D). Sulphur dioxide
14). Coating of Zinc over iron article is known as
A). Galvanisation
B). Electroplating
C). Electro refining
D). Etching
15). Tincture of iodine is
A). Iodine
B). Iodine and iodoform
C). Iodine and potassium iodide
D). lodoform


16). The protein content is of the order
A). soyabean > egg yolk > rice
B). egg yolk > soyabean > rice
C). egg yolk > rice > soyabean
D). soyabean > rice > egg yolk
17). Which one of the following is correctly matched?
A). Liquid gold - Lead
B). Liquid silver -Mercury
C). Aquaregia - Silver
D). Green silver - Copper
18). Which one of the following is correctly matched?
A). Charcoal - Inactive carbon
B). Diamond - Conductor
C). Graphite -Insulator
D). Fullerene - Soluble form of carbon
19).

Match List I with List II correctly and select your answer using the codes given below:

List I   List II
a. Lead tetraethyl   1. Global warming
b. Liquid hydrogen   2. Antiknocking agent
c. Hydrogen peroxide   3. Rocket fuel
d. Carbon dioxide   4. Bleaching agent

A). 2 1 3 4
B). 1 3 2 4
C). 2 4 3 1
D). 2 3 4 1
20). Consider the following statements:
Assertion (A) : Silver articles on exposed to air become black.
Reason (R) : Silver is oxidised to silver oxide.
Now select your answer according to the coding scheme given below:
A). Both (A) and (R) are true and (R) is the correct explanation Of (A)
B). Both (A) and (R) are true, but (R) is not the correct explanation of (A)
C). (A) is true, but (R) is false
D). (A) is false, but (R) is true
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