Which of the following is a pair of exhaustible natural resources?

Exhaustible natural resources are

Which substance is formed by the carbonisation of dead vegetation?

Which of the following is not a constituent of petroleum?

The product(s) obtained by destructive distillation of coal is/are

Process of separation of different constituents from petroleum is called ____________________ 

Coal is one of the _____________used to cook food

Coal tar is a black, thick_____________ with an _______________smell.

_______________is used in vaseline

The substances formed from natural gas and petroleum are called_____________

CNG is more polluting fuel than petrol.

Kerosene is not a fossil fuel.

Under high temperature and pressure, dead plants get slowly converted to coal.

First oil well was drilled in USA.

Coke is harder and denser than charcoal

Which product of coal is used as a reducing agent in the extraction of metals?

Why are gaseous fuels preferred to solid fuels in chemical industries?

Petroleum is called black gold. Why?

Which petroleum product is commonly used for electric generators?

How CNG is a good fuel than petrol and diesel in vehicles?

What are the advantages of using CNG and LPG as fuels?

Write the difference between coke and coal

What are the disadvantages of using fossil fuels?

You are provided with a mixture of petroleum and water. Can you suggest a method to separate the two?

Where do we get coal from and how is it formed?

Why petrol is exhaustible natural resource whereas sunlight is not? Explain.

The substance A is a fossil fuel. It occurs deep below the earth's crust in certain areas. Another fossil fuel B is found above the substance A. When A is subjected to a process C, a number of different products (fractions) are collected at different temperature ranges which have different uses. A special grade of product D obtained in this process is used as aviation fuel in jet aeroplanes. The product D is also used in stoves, lamps, etc
Now give the answer of the following questions.
(a) What are the substances, A and B?
(b) Write the physical states of substances A and B.
(c) What is the process C called?
(d) Name the product D.