Tag: energy conservation and sources

Questions Related to energy conservation and sources

Energy source which do not evolve CO$ _2$ is

commercial applications sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources reduce, recycle, reuse

  1. Oil

  2. Coke

  3. Nuclear energy

  4. Other organic substances

Show answer
Correct Option: C
Explanation:

Oil is a mixture of molecules that mainly contain carbon and hydrogen. When it burns it also produces CO$ _2$, but 25% less than coal for the same amount of energy (because the combustion of hydrogen gives energy but generates only water). 

Coke and other organic substances when used as source of energy, CO$ _2$ can be released. 
Nuclear energy can not evolve CO$ _2$. Thus, the correct answer is option C.

Which of the following is the best choice for energy production?

commercial applications sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources reduce, recycle, reuse

  1. Hydrogen

  2. Solar system

  3. Windmill

  4. All of the above

Show answer
Correct Option: D
Explanation:

Energy generated by using wind, hydrogen, tides, solar, geothermal heat, and biomass is known as non-conventional energy. These are the inexhaustible non-conventional resource. Hence, these are the best choice for energy production.

Thus, the correct answer is option D.

The economically friendly measure to conserve solar energy is

commercial applications sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources reduce, recycle, reuse

  1. Sugarcane plantation

  2. Energy plantation

  3. Both (A) and (B)

  4. None of the above

Show answer
Correct Option: C
Explanation:

Photosynthesis is the process by which green plants and certain other organisms transform light energy into chemical energy. Photosynthesis in green plants harnesses the energy of sunlight to convert carbon dioxide, water, and minerals into organic compounds and gaseous oxygen. Hence, planting green trees is an easy way to conserve solar energy.

Amazon rainforests are considered as 'lungs of the planet' as they contribute ________ of the total oxygen in the earth's atmosphere.

commercial applications sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources reduce, recycle, reuse

  1. 10%

  2. 15%

  3. 20%

  4. 30%

Show answer
Correct Option: C
Explanation:

About 20% of the world oxygen is produced in the rainforests. amazon They are described as the  'lungs of the planet' because they provide the essential world environmental service of continuously recycling $CO _$ into $O _2$.

Ecofriendly method is

commercial applications sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources reduce, recycle, reuse

  1. Plantation of $C _3$ plants

  2. Plantation of Sugarcane

  3. Energy plantation

  4. None of the above

Show answer
Correct Option: C
Explanation:
  • Energy plantation is the practice of planting trees, purely for their use as fuel. Terrestrial biomass i.e., the wood plants have been used for a long time to generate fire for cooking and other purposes.
  • Energy plantation is an Eco-friendly method or environmental friendly as this method does not cause any harm to the environment.
  • Hence the Eco-friendly method is Energy plantation.
  • So, the correct answer is 'Energy plantation'.

Select the eco-friendly activity among the following.

commercial applications sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources reduce, recycle, reuse

  1. Using car for transportation.

  2. Using polybags for shopping.

  3. Using dyes for colouring clothes.

  4. Using windmills to generate power for irrigation.

Show answer
Correct Option: D
Explanation:
Solar energy, wind energy, geothermal energy are some of the non-exhaustible non-polluting sources of energy. These energy sources are environmental friendly. For example- wind energy can be captured through wind mills for irrigating fields as well as generating electricity power
So, the correct answer is 'Using windmills to generate power for irrigation'

Which of the following activities that you perform daily in which natural resources can be conserved or energy utilisation can be minimised?

commercial applications sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources reduce, recycle, reuse

  1. Use fan and light only when required.

  2. Unused water in the water bottle may be used for watering plant.

  3. Use solar water heating devices.

  4. All of the above.

Show answer
Correct Option: D
Explanation:
Ways to mimimize energy utilization are as follows:
(a) Unused water in the water bottle may be used for watering plant.
(b) Close all the taps before you go to sleep.
(c) Avoid using a hose pipe for watering plants.
(d) Wash vehicles only when they are dirty.
(e) Use fan and light only when required.
(f) Use solar water heating devices.
(g) Use CFL in place of conventional bulbs/tubes.

What measures would you take to conserve electricity in your house?

commercial applications sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources reduce, recycle, reuse

  1. Use of fluorescent tubes or CFL.

  2. Put off the fans and lights when they are not required.

  3. Maximum use of solar radiation and use of solar water heating system during winters.

  4. All of the above.

Show answer
Correct Option: D
Explanation:
Ways of conserving electricity are as follows:
(a) Put off the fans and lights when they are not required.
(b) Maximum use of solar radiation.
(c) Use of solar water heating system. during winters.
(d) Use of fluorescent tubes or CFL.

Which of the following activities in daily life are eco-friendly?

commercial applications sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources reduce, recycle, reuse

  1. Separation of biodegradable and non-biodegradable substances

  2. Gardening

  3. Use of gunny bags/paper bags in place of polythene/plastic bags

  4. All of the above

Show answer
Correct Option: D
Explanation:

Eco-friendly activities in daily life:

  • Separation of biodegradable and non-biodegradable substances.
  • Gardening
  • Use of gunny bags/paper bags in place of polythene/plastic bags.
  • Using public transport for commuting, walking or using cycle for short distances.
  • Harvesting rainwater.
  • Switching off light/ fans in unoccupied rooms.
  • Use of compost and vermicompost in place of fertilizers.

Leader of "Narmada Bachao Andolan"

commercial applications sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources reduce, recycle, reuse

  1. Vandana Siva

  2. Medha Patkar

  3. Menaka Gandhi

  4. Mayilamma

Show answer
Correct Option: B