Tag: protecting our environment

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Questions Related to protecting our environment

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

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

  1. Deforestation

  2. Reducing the use of vehicles

  3. The burning of the wastage

  4. Afforestation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Afforestation involves planting trees, which helps in water conservation by reducing runoff, increasing groundwater recharge, and maintaining the water cycle. Deforestation and burning waste are harmful to the environment.

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

Solar energy is 

  1. Cleanest source of energy.

  2. Helpful in photosynthesis.

  3. Renewable source of energy.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
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).

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

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


  1. Oil

  2. Coke

  3. Nuclear energy

  4. Other organic substance
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

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

  1. Wind energy

  2. Tidal energy

  3. Geothermal energy

  4. Hydropower
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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

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

An inexhaustible non-conventional energy source is

  1. Coal

  2. Petroleum

  3. Solar radiations

  4. Electricity from nuclear plants
Reveal answer Fill a bubble to check yourself
C Correct answer
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'

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

Best source of renewable energy is

  1. Cattle

  2. Petroleum

  3. Coal

  4. Trees
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.