Name the process by which plant material (or vegetation) buried deep under the earth was slowly converted into coal
Name any five substances used in everyday life that are manufactured starting from the products of coal tar.
State whether the following statements are true or false:
(a) Coke is almost pure of 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
Fill in the following blanks with suitable words:
(a) Fossil fuels are __________ and ________.
(b) Coal contains mainly ___________.
(c) The slow process of conversion of dead vegetation into coal is called ____________.
(d) The process of separation of different constituents from petroleum is ____________.
(e) The least polluting fuel for vehicle is ______________.
(f) The burning of fossil fuel causes air _____ and also causes global ______.
What are the major products (or fractions) of petroleum refining? Give one use of each petroleum product.
(a) Where and when was the world’s first oil well drilled?
(b) Where and when was oil first struck in India?
State one use each of the following products of petroleum:
(a) Petroleum Gas
(d) Lubricating Oil
What is the major cause of air pollution? Write the various tips for minimizing the wastage of petrol/diesel while driving vehicles
(a) What is petroleum? Where does petroleum occur?
(b) Describe the process of the formation of petroleum.
The gas which occurs above the petroleum oil trapped under the rocks is called:
(b) Petroleum gas
(c) Natural gas
(d) Coal gas
Which of the following is being used as a source of hydrogen gas needed to manufacture fertilizers?
(b) Natural gas
(c) Coal gas
(d) Petroleum gas
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