Chapter 3: Coal and Petroleum

Q&A -Ask Doubts and Get Answers

Q
Coal and Petroleum

Question:

Tick True/False against the following statements.

(a) Fossil fuels can be made in the laboratory. (T/F)

(b) CNG is more polluting fuel than petrol. (T/F)

(c) Coke is almost pure form of carbon. (T/F)

(d) Coal tar is a mixture of various substances. (T/F)

(e) Kerosene is not a fossil fuel. (T/F)

Answer:

(a) Fossil fuels can be made in the laboratory. (False)

Fossil fuels are formed when the remains of the dead organisms or the organic matter that has been buried deep within the earth are subject to heat and pressure over millions of years. This process requires a longer time so it cannot be processed in a laboratory. Thus, the given statement is false.

(b) CNG is more polluting fuel than petrol. (False)

Natural gas like CNG is cleaner than coal so, it is considered a better fuel than coal and petrol. Natural gas emits 50% less carbon dioxide, sulphur and nitrogen oxides in the air. Thus, the given statement is false.

(c) Coke is almost pure form of carbon. (True)

Coke is the purest form of carbon, which is used as a fuel. It is harder and denser than charcoal. It is obtained by heating soft coal in the absence or little supply of air. Thus, the given statement is true.

(d) Coal tar is a mixture of various substances. (True)

Coal Tar is a black thick liquid that has an unpleasant odor. It is a mixture of various substances and it is used to manufacture certain materials like; drugs, dyes, plastics, perfumes, paints, naphthalene balls, etc. Thus, the given statement is true.

(e) Kerosene is not a fossil fuel. (False)

Coal, petroleum, and natural gas are fossil fuels that are formed under the earth's crust by the decomposition of dead plant and animal remains. Kerosene is the constituent of petroleum. So, it is a fossil fuel. Thus, the given statement is false.


Related Questions for Study

What our students and parents say about us!

Choose EduSakshamยฎ
Embrace Better Learning

edusaksham-mobile-app