CHEMISTRY

 

1. Natural rubber is a ________ which is having high elasticity.
A. Substance
B. Material
C. Elastomer
D. Chemical using carbon as main compound
2. How will you define the process of Vulcanization?
A. Sample of butane mixed with sulphur and litharge
B. Sample of propane mixed with sulphur and litharge
C. Sample of plastic formed carbon mixed with sulphur and litharge
D. Sample of rubber mixed with sulphur and litharge
3. What is NBR?
A. Normal Acrylonitrile-butadiene rubber
B. Natural Acrylonitrile-butadiene rubber
C. N Acrylonitrile-butane rubber
D. Acrylonitrile-butadiene rubber
4. A synthetic rubber is having__________weight.
A. Higher resistance
B. Lower density
C. Higher molecular
D. Higher atomic
5.  Which of the following is not a type of elements?
A. Metals
B. Non Metals
C. Metalloids
D. Gases

ANSWERS:

1. Ans: C

2. Ans: D

3. Ans: D

4. Ans: C

5. Ans: D