Tag: sources of water

Questions Related to sources of water

The use of CFL can save .......... electricity per year.

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. 1000 megawatt

  2. 6000 megawatts

  3. 100 megawatt

  4. None of the above

Show answer
Correct Option: B
Explanation:

Compact fluorescent lamps (CFL) are the bulbs which are generally used to save the electricity. These bulbs use and convert only 1/5$^{th}$ of the electricity into light. There is consumption of less electricity. This helps in reduction of about 6000 megawatts of electricity per year. 

Thus, the correct answer is option B. 

Which one of the following is an example of non-renewable resources?

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. Water

  2. Wind

  3. Vegetation

  4. Coal and minerals

Show answer
Correct Option: D
Explanation:

Nonrenewable resources are resources that are not easily replenished by the environment. Thus coal and  minerals are examples of non renewable resources.

Which of the following energy is better than solar energy?

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. Atomic energy

  2. Wind energy

  3. Energy from fossil fuel

  4. None of the above

Show answer
Correct Option: B
Explanation:
Wind energy is better than solar energy due to the following properties.
(i)   It can produce energy anytime (day or night).
(ii)  The set up takes less space.
(iii) It can produce more electricity.
(iv) It is less costly.
So, the correct option is 'Wind energy'.

De-dust lighting fixture is used 

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. To maintain illumination

  2. To increase energy efficiency

  3. To remove dust from bulb

  4. None of the above

Show answer
Correct Option: A

Which of the following has the largest wind energy farm in India?

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. Karnataka

  2. Madhya Pradesh

  3. Tamilnadu

  4. Kerala

Show answer
Correct Option: C
Explanation:

India is ranked 5th largest wind producing country in the world. The largest wind energy farm is in Muppandal, Tamilnadu having the capacity of 1500MW wind production. So, the correct option is C.

CFL 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. Chlorofluoro lamp

  2. Compact fluorescent lamp

  3. Compact fluorescent light

  4. Both B and C

Show answer
Correct Option: D
Explanation:

CFL is compact fluorescent light. Compact fluorescent light bulbs are used in place of incandescent bulb because they use about 1/7$^{th}$ of the power used by the incandescent bulb. Hence, they are highly efficient in saving electricity.

Thus, the correct answer is option C.

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 $O _2$.