Science Question Answer (1 Marks)

Diesel is used as a fuel for electric generators.

Coke is used as a reducing agent in the extraction of metals. It is used in the manufacture of steel and in the extraction of many metals.

Diesel is used as a fuel for heavy motor vehicles and electric generators.

Naphthalene balls used to repel moths and other insects are obtained from coal tar.

Petrol is used as a fuel in light motor vehicles such as motor cycles, scooters and cars.

Natural gas is a fossil fuel other than coal and petroleum. Natural gas consists of ethane, propane and heavier hydrocarbons.

The world’s first oil well was drilled in Pennsylvania, USA, in 1859.

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.

The full form of PCRA is Petroleum Conservation Research Association. It advises people how to save petrol/ diesel while driving.

Bitumen is used for the surfacing of roads.

The full form of CNG is compressed natural gas. Natural gas is a very important fossil fuel because it is easy to transport through pipes. Natural gas is stored under high pressure as compressed natural gas (CNG).

Natural gas consists of primarily of methane but also contains ethane, propane and heavier hydrocarbons. It also contains small amounts of nitrogen, carbon dioxide, hydrogen sulphide and very little amount of water.

At Makum in Assam, in 1867, oil was stuck in India. Oil is found in Assam, Gujarat, Mumbai High and in the river basins of Godavari and Krishna.

Petroleum can be extracted from under the sea bed. It can be extracted with giant drilling machines. The layer containing petroleum oil and gas is above that of water.

In India, oil is found in Assam, Gujarat, Mumbai High and in the river basins of Godavari and Krishna.

The full form of LPG is Liquefied petroleum gas. It is also referred as propane or butane. It is flammable and is used as fuel in heating appliances, cooking equipment and vehicles.

Natural gas is a very important fossil fuel because it is easy to transport through pipes. It can be used as a fuel in homes and factories. It is also used as a starting material for the manufacture of a number of chemicals and fertilizers.

India has huge reserves of natural gas. It has been found in Tripura, Rajasthan, Maharashtra and in the Krishna Godavari delta.

Bitumen, a petroleum product, is used in place of coal-tar for metalling the roads.

Kerosene is used as fuel in jet aircraft engines.