Tag: commercial applications

Quizzes (170) Questions (1551)

Questions Related to commercial applications

Multiple choice 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

The management of natural resources should take into

  1. A long term perspective

  2. Environmental pollution

  3. Their equitable distribution

  4. A, B, C and safe disposal of wastes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Natural resource management refers to the management of natural resources such as land, water, soil,  plants and animals, with a particular focus on how management affects the quality of life for both present  and future generations. This includes all the above a,b & c points hence d option is the right answer.

Multiple choice 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

Biogas generation is mainly based on the principle of

  1. Fermentation

  2. Degradation

  3. Putrification

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Biogas is a flammable gas that is produced from the fermentation or degradation of biomass in biogas plants. Biogas typically refers to a gas produced by the biological breakdown (degradation) of organic matter in the absence of oxygen. whereas the breakdown of organic matter, usually by bacterial action, resulting in the formation of other substances of less complex constitution with the evolution of ammonia is known as putrification.

Multiple choice 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

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

  1. 1000 megawatt

  2. 6000 megawatts

  3. 100 megawatt

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
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. 

Multiple choice 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

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

  1. Water

  2. Wind

  3. Vegetation

  4. Coal and minerals
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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

Multiple choice 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

Which of the following energy is better than solar energy?

  1. Atomic energy

  2. Wind energy

  3. Energy from fossil fuel

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.
Multiple choice 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

De-dust lighting fixture is used 

  1. To maintain illumination

  2. To increase energy efficiency

  3. To remove dust from bulb

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

De-dust lighting fixtures are designed to minimize dust accumulation, which ensures that the light output remains consistent and illumination levels are maintained over time.

Multiple choice 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

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

  1. Karnataka

  2. Madhya Pradesh

  3. Tamilnadu

  4. Kerala
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

Multiple choice 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

CFL is

  1. Chlorofluoro lamp

  2. Compact fluorescent lamp

  3. Compact fluorescent light

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

Multiple choice 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

Energy source which do not evolve CO$ _2$ is

  1. Oil

  2. Coke

  3. Nuclear energy

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

Multiple choice 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

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

  1. Hydrogen

  2. Solar system

  3. Windmill

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