Tag: protecting our environment

Questions Related to protecting our environment

Water is an essential commodity for survival. What can we do to help increase water resources?

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

  1. Deforestation

  2. Reducing the use of vehicles

  3. The burning of the wastage

  4. Afforestation

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Correct Option: D

Solar energy is 

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

  1. Cleanest source of energy.

  2. Helpful in photosynthesis.

  3. Renewable source of energy.

  4. All of the above.

Show answer
Correct Option: D
Explanation:

Solar power is energy from the sun that is converted into thermal or electrical energy. Solar energy is the cleanest and most abundant renewable energy source available.
Solar power can be used to generate electricity, it is also used in relatively simple technology to heat water (solar water heaters).

Which is a non-renewable resource?

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 the above

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Correct Option: D

Which of the following is non-renewable?

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

  1. Water

  2. Coal

  3. Forests

  4. Wild life

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Correct Option: A

Energy source which do not evolve $CO _{2}$


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

  1. Oil

  2. Coke

  3. Nuclear energy

  4. Other organic substance

Show answer
Correct Option: C
Explanation:

The processes for which any CO2 is not evolved is :

  • all the forms of nuclear energy,
  • hydroelectricity (though dam reservoirs in the tropics might free a little methane, which is a greenhouse gas, because of the decaying of biological debris in the water),
  • sun rays,
  • wind,
  • tidal energy,
  • geothermal energy,
  • biomass if replanted.
  • So the correct option is C.

Which non-conventional method is used to produce electricity at Sardar Sarovar Dam?

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

  1. Wind energy

  2. Tidal energy

  3. Geothermal energy

  4. Hydropower

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Correct Option: D
Explanation:

Hydropower is a renewable, non-polluting and environmentally benign source of energy. Sardar Sarovar dam uses hyropower to produce electricity.

An inexhaustible non-conventional energy source is

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. Solar radiations

  4. Electricity from nuclear plants

Show answer
Correct Option: C
Explanation:

Energy obtained by using wind, tides, solar etc. in renewable energy, also called non-conventional energy, solar energy is inexhaustible source of energy.

So, the correct answer is 'Solar radiations'

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. petroleum

  4. Coal

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Correct Option: A
Explanation:

Fuel gas, coal, petroleum, cannot be replenished back once they are finished, they are non-renewable sources, while forest if tried can be obtained back.

So, the correct answer is 'Forest'

Renewable products are available from

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

  1. Fossil fuels

  2. Agriculture

  3. Tides

  4. Rainfall

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Correct Option: B
Explanation:

Renewable products can be obtained back once finished, products from agricultural activities can be considered as a renewable product.

So, the correct answer is 'Agriculture'

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

Show answer
Correct Option: D
Explanation:
  • Renewable energy is energy generated from natural resources —such as sunlight, wind, rain, tides, trees and geothermal heat—which are renewable (naturally replenished).
  • Trees are very important for us as a renewable resource. Trees are a natural resource that can be renewed by planting of trees and replacing the trees that are harvested for use by people.
  • Hence the Best source of renewable energy is trees.
  • So, the correct answer is 'Trees'.