Class 8 Science Chapter 5 MCQ

Here, all these statements are correct. Hence, your answer will be option [D].

Here, all these statements are correct. Hence, your answer will be option [D].

Here, all these statements are correct. Hence, your answer will be option [D].

Petroleum was formed by the decomposition of the remains of tiny plants and animals buried under the sea millions of years ago.

Coke is not a constituent of petroleum. Coke is prepared by heating coal in the absence of air.

Paraffin wax is used in ointment, candles, Vaseline etc. Bitumen is used in paints and road surfacing.

Sunlight, air and water are the examples of inexhaustible nature resources. There is a never ending in nature and they can be used again and again. But coal, petroleum and natural gas are non-renewable resources of energy. By using or exhausted, no more supply of these fuels will be available in the near future.

Coal is formed by the carbonization of dead vegetation.

Here, all these statements are correct. Hence, your answer will be option [D].

Coal is formed by the decomposition of large land plants and trees buried under the earth about 300 million years ago.

Here, all these statements are correct. Hence, your answer will be option [D].

Fossil fuels are obtained from the remains of living organisms (plants and animals) buried under the earth millions of years ago. Note: Coal, Petroleum and Natural gas are fossil fuels.

Bitumen is used for road surfacing. It is also used for water-proofing the roofs of building. Bitumen is used in making black paints.

Exhaustible natural resources are present in limited quantity in nature and can be exhausted by human activities. Note: Coal, petroleum and natural gas, minerals, forest and wildlife, etc. are exhaustible natural resources.

CNG (Compressed Natural Gas) is not obtained from coal. Note: Natural gas is formed under the earth by the decomposition of vegetable matter lying under water.

Here, all these statements are correct. Hence, your answer will be option [D].

Wildlife and minerals are exhaustible natural resources because these resources are present in a limited quantity in nature and can be exhausted by human activities.

The major component of LPG and CNG are butane and methane respectively.

Here, all these statements are correct about fossil fuel. Hence, your answer will be option [D].

Sunlight, air and water are inexhaustible natural resources that means which cannot be exhausted by human activities.

Sunlight, air and water are the examples of inexhaustible nature resources. There is a never ending in nature and they can be used again and again. But coal, petroleum and natural gas are non-renewable resources of energy. By using or exhausted, no more supply of these fuels will be available in the near future.

Coal is used to make coke, not Coca-Cola. Coke is an almost pure form of carbon. Coal is important because it can be used as a source of heat energy. Coke is a porous and tough, black solid substance. Coke is prepared by heating coal in the absence of air. Coke is used in the manufacturing of “steel”. Although, coke burns without producing any smoke whereas coal produces a lot of smoke on burning.

Coke is prepared by heating coal in the absence of air. Coke is mainly used as a reducing agent in the extraction of metals. Such as iron, zinc etc. Coke is used in the manufacturing of Steel.

Coal tar is black liquid which have unpleasant smell and obtained from coke. Although, coal tar is a not a single compound, it is a mixture of 200 types of carbon compounds. Such as, benzene, naphthalene, phenol etc.

The world’s first oil well was drilled in Pennsylvania, USA, in 1859. Eight years later, in 1867, oil was stuck at Makum in Assam. In India, oil is found in Assam, Gujarat, Mumbai High and in the river basins of Godavari and Krishna.