Physics, asked by JacobIsrael, 14 days ago

1) Identify the gas that is generally produced when coal is burnt in the presence of a lot of air.

A. Carbon monoxide

B. Sulphur dioxide

C. Nitrogen dioxide

D. Carbon dioxide

2) The slow process of conversion of dead vegetation into coal is called _____.

A. decomposition

B. evolution

C. carbonification D. carbonization

3) Identify the substance which is tough, porous and black. It is almost a pure form of carbon.

A. Crude oil

B. Coke

C. Coal tar

D. Coal gas

4) ______is used in the manufacture of steel and also in the extraction of many metals.

A. Coke

B. Crude oil

C. Coal tar

D. Coal gas

5) Which of the following are the products obtained from coal?

1) Coal tar

2) Petrol

3) Coal gas

4) Ammonical liquor

5) Paraffin wax

6) Coke

A. 1, 3, 4, 6 B. 1, 2, 4, 6 C. 1, 3, 4, 5 D. 1, 2, 3, 4

6) PCRA stands for

a. Public Conservations Research Association

b. Petroleum Conservation Research Association

c. Public Council of Research Association

d. Partial Counting of remaining Amendment

7) Coaltar contains about

a. 300 substance

b. 400 substance

c. 200 substance

d. 100 substance

8. Petroleum is mainly a mixture of which one of the following class?

a) carbohydrates b) Carbogens

c) Hydrocarbons

d) Alcohols

9) Full form of LPG

a) Light Petroleum Gas

b) Liquefied Petroleum Gas

c) Long Pipe of Gas

d) Long Petroleum Gas

10) Main constituent of LPG is

a) methane b) butane

c) ethane

d) propane

11) Least polluting fuel for vehicles is

a) coke

b) kerosene c) diesel

d) CNG

12) In which of the following places natural gas has not been formed in India?

a) Tripura

b) Jaiselmer

c) Mumbai

d) Delhi

13) What is the common name for crude oil or Petroleum?

a) Black Gold

b) yellow Gold

c) Green Gold

d) None of these

14) Coke is obtained from _______

a) destructive distillation

b) Refining of coal

c) Strong heating in the absence of air

d) Both (a) and (c)​

Answers

Answered by prachisingh6579
2

Answer:

3(b),4(a),5(a),6(b),7(c),9(b),11(d),12(c),13(a),14(a)

Answered by Anurag9555
4

Explanation:

  1. D.
  2. A.
  3. B.
  4. A
  5. 1.
  6. c
  7. c .
  8. c
  9. a.
  10. a
  11. d
  12. d.
  13. a
  14. d .
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