State whether the following statements are true or false: (a) Coke is almost pure from carbon. (b) Coal tar is a mixture of various substances. (c) Kerosene is not a fossil fuel. (d) CNG is more polluting than petrol. (e) Fossil fuels can be made in the laboratory.

Question

Philoid · Accepted Answer

(a) This statement is True.

It is a tough, porous and black substance. It is almost pure form of carbon.

(b) This statement is True.

Coal tar is the product of coal which is a thick black liquid having an unpleasant smell. It is a mixture of about 200 substances.

(c) This statement is False.

Kerosene is a fossil fuel. It is used as a fuel for stoves, lamps and for jet aircrafts.

(d) This statement is False.

CNG is less polluting than petrol. It is a clean burning fuel. It produces 45% less hydrocarbons than petrol.

(e) This statement is False.

The formation of fossil fuels is a very slow process. These are formed under very high pressure and high temperature. The conditions for their formation cannot be created in the laboratory.

State whether the following statements are true or false:(a) Coke is almost pure from carbon.(b) Coal tar is a mixture of various substances.(c) Kerosene is not a fossil fuel.(d) CNG is more polluting than petrol.(e) Fossil fuels can be made in the laboratory.

State whether the following statements are true or false:
(a) Coke is almost pure from carbon.

(b) Coal tar is a mixture of various substances.

(c) Kerosene is not a fossil fuel.

(d) CNG is more polluting than petrol.

(e) Fossil fuels can be made in the laboratory.