Tag: water and air and their importance

Questions Related to water and air and their importance

Which one of the following is an inexhaustible source of energy and does not cause pollution?

commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

  1. Solar energy

  2. Nuclear energy

  3. Fuel wood

  4. Coal

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Correct Option: A
Explanation:

The resources which are available in nature in an unlimited amount are known as inexhaustible resources. These resources can be replenished again and again for use. The solar energy is obtained from the radiations of the sun is an example of an inexhaustible resource. The energy is a safe energy source and does not cause any type of pollution.

Thus, the correct answer is option A. 

Main renewable source of energy is

commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

  1. Forest

  2. Fuel gas

  3. Petrol

  4. Coal

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Correct Option: A
Explanation:

The resources which can be replenished again after their consumption are referred as the renewable sources of energy. The forests can be replenished through afforestation. The programs like hugging the tree, tree plantation program, etc have been undertaken in order to increase the forests resources.

Thus, the correct answer is option D. 

Renewable source of energy is

commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

  1. Coal

  2. Kerosene

  3. Petroleum

  4. Biomass

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Correct Option: D
Explanation:

Biomass is organic material formed by the decomposition of dead plants and animals. The living forms such as plants and animals can be replenished by reproduction. Hence, biomass is a renewable and sustainable source of energy. It is used to generate electricity or other forms of energy. Thus the correct answer is option D.

Minerals extracted from earth are

commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

  1. Conventional resources

  2. Non-conventional resources

  3. Both A and B

  4. None of the above

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Correct Option: A

Which of the following is / are fossil fuels ?

commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

  1. Coal

  2. Petroleum

  3. Natural gas

  4. All of these

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Correct Option: D
Explanation:

They all are fuels because they release heat energy when they are burned. They are fossil fuels because  they were formed from the remains of living organisms millions of years ago.

From the following, which is the best source of renewable energy?

commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

  1. Petroleum

  2. Coal

  3. Forests

  4. Cattle

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Correct Option: C
Explanation:
Renewable energy is generally defined as energy that comes from resources which are naturally renewed. The forest is the best source of renewable energy as the trees collect solar energy on a daily basis and convert this energy into their mass through photosynthesis. Such forest can be replenished by planting new trees.
So, the correct answer is 'Forests'

Which of the following is an exhaustible natural resource ?

commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

  1. Air

  2. Water

  3. Soil

  4. Forest

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Correct Option: D
Explanation:

Resources which get exhausted and are not available in nature in plenty and are known as exhaustible natural resources. They take longer to get replenished. For example coal, petroleum, forest, minerals, etc.

Minerals and metals are

commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

  1. Biodegradable resources

  2. Renewable

  3. Non-renewable

  4. Inexhaustible

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Correct Option: C
Explanation:

The resources which cannot be replenished again after consumption of resources are known as non-renewable resources. The minerals and metals are obtained from the ores through the process of mining. There are limited reserves of the ores in the Earth's crust.

Thus, the correct answer is option C. 

Best source of renewable energy is

commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

  1. Cattle

  2. Petroleum

  3. Coal

  4. Trees

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Correct Option: D
Explanation:

The resources which can be replenished again after their consumption are referred as the renewable sources of energy. The forests can be replenished again through the process of afforestation. In this method, new trees are planted to cover the area under forests. 

Thus, the correct answer is option D. 

Select the non renewable resources from the following

commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

  1. Forest

  2. Soil

  3. Water

  4. Fossil fuels

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Correct Option: D
Explanation:

Forests, soil and water are renewable resources because they are replaced naturally and hence can be repeatedly used.

Fossil fuels are obtained by the action of the environment on the dead plants and animals for hundreds of years. They are non renewable because they cannot be reused again as their actual form gets converted to a waste product or some other non-usable form.
Thus the correct answer is option D.