Question

EX
A. Choose the most appropriate answer.
1. Renewable resources need to be conserved because
a. we are using them faster than they are replenished by nature,
b. they are slowly disappearing from the earth.
c. if we overuse them nature will stop replacing them.
d. all of these
2. It is an important fraction of petroleum. It is further distilled to get lubricating oil and
paraffin wax.
a. petroleum gas
c. anthracite
d. residue
b. heavy oil
3. Coal mainly contains
a. carbon.
b. carbon and hydrogen.
c. carbon, hydrogen and nitrogen.
d. carbon, nitrogen and oxygen.
4. Which of the following is regarded as the best variety of coal?
a. bituminous
b. lignite
c. anthracite
5. Which of the following is a non-polluting fuel for vehicles?
a. petrol
b. diesel
c. kerosene
d. CNG
6. In destructive distillation, coal is heated strongly to about
a. 5000 °C
b. 1000 °C.
c. 100 °C.
d. 10,000 °C.
d. peat
76 • MATERIALS​

Answer 1

Answer:

1.D

2.A

3.A

4.C

5.D

6.Not much sure but (B)

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