Tag: protecting our environment

Questions Related to protecting our environment

Geothermal energy is produced in India from hot springs by a 5 KW geothermal power plant at

commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

  1. Manikaran (HP)

  2. Puga (Ladhakh)

  3. Gulfs of Kutch

  4. Ankleshwar

Show answer
Correct Option: A
Explanation:
Geothermal energy is energy from the shallow ground hot water and hot rock found some miles or deeper to the extremely high temperatures of molten rock called magma. Geothermal activity in the Parbati Valley is due to the hot springs at Manikaran, a village situated on the banks of Parbati river in Himachal Pradesh. Thus the correct answer is option A.

Power and manure both are provided by ________

commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

  1. Thermal plant

  2. Nuclear plant

  3. Biogas plant

  4. Hydroelectric plant

Show answer
Correct Option: C
Explanation:

In a biogas plant, household wastes and biowastes can be disposed of usefully and in a healthy manner to obtain biogas a renewable source of energy, which is used as a fuel because it reacts with oxygen and  releases energy, which is clean in nature. Also the residue of the plant can be used as a manure.

Which among the following is known as land of windmills?

commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

  1. Netherlands

  2. Cathopia

  3. Japan

  4. USA

Show answer
Correct Option: A
Explanation:
A- Netherland has numerous windmills as it utilizes windmill not only for energy conservation but also to beautify the landscape. Windmills are further used to pump out water from lowlands and drain them back into the rivers enabling the farming of the land. 
So, the correct answer is 'Netherlands'

Wind energy is an _____ energy resource

commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

  1. Inexhaustible

  2. Exhaustible

  3. Both A and B

  4. None of the above

Show answer
Correct Option: A
Explanation:

Wind energy is an inexhaustible energy resource which has been used for centuries to ran wind mills and pump water.

Geothermal energy is used to obtain electricity in

commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

  1. Tamil Nadu

  2. Bihar

  3. Himachal Pradesh

  4. Rajasthan

Show answer
Correct Option: C
Explanation:

In some places, the hot water comes to the earth surface as hot spring which can be used to generate electricity. In Himachal Pradesh, electricity is generated by this method.

Which technology is used to harvest solar energy from the sun?

commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

  1. Artificial photosynthesis

  2. Photovoltaics

  3. Solar heating

  4. All of the above

Show answer
Correct Option: D

Biogas can be a good substitute for

commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

  1. Fuel gas

  2. Petroleum and oil

  3. Coal

  4. Charcoal

Show answer
Correct Option: A
Explanation:
Biogas is produced by the decomposition of organic material from plants and animals. It consists of mainly methane gas which can be used as fuel. Old feeds of organic matter of biogas process can be dried and used as soil manure or fertilizers. Thus the correct answer is A.

Which of the following yields more energy?

commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

  1. Direct burning of cow dung

  2. Burning of biogas derived from cow dung

  3. Burning of manure derived from cow dung

  4. Burning of semi-decayed cow dung

Show answer
Correct Option: B

Biogas plant is more useful than burning of dung cakes because

commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

  1. It is non-pollutant.

  2. It yields manure as well as fuel gas.

  3. It yields important biochemicals.

  4. Both A and B.

Show answer
Correct Option: D
Explanation:
Biogas plant produces both biogas and manure from the decomposition of waste material or organic matter. Biogas has a high calorific value than cow dung cakes. Calorific value of methane is about 5.5 KJ/g while for cow dung cakes is about 3.1 KJ/g. Moreover, biogas does not produce any pollutant like cow dung cakes produce carbon dioxide on burning. Neither biogas leaves any ash or soot after burning. Hence, biogas is a non pollutant.
So, the correct answer is 'Both A and B'.

Types of bioenergy are

commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

  1. Biomass

  2. Biofuel

  3. Biogas

  4. All of the above

Show answer
Correct Option: D
Explanation:

  • Biomass is the amount of organic matter present in an organism at a given time. It is the stored form of energy in an organism.
  • Biofuel is any substance which has a biological origin and can be used as a fuel. For example, fuel wood.
  • Biogas is formed from the decomposition of organic matter and can be used as an alternative source of energy in place of fossil fuels.
The energy produced from all these sources is called bioenergy which is renewable and has no negative impact on environment.
So, the correct answer is 'All of the above'.