Tag: energy conservation and sources

Questions Related to energy conservation and sources

Index of energy consumption is maximum for

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. U.S.A

  2. Japan

  3. Norway

  4. Canada

Show answer
Correct Option: D
Explanation:
A. Index of energy consumption for U.S.A. is 6917 KWh
B. Index of energy consumption for Japan is 3470 KWh
C. Index of energy consumption for Norway is 5854 KWh
D. Index of energy consumption for Canada is 7247 KWh
So, correct answer is 'Canada'.

In ...................... strategy for saving the environment, things are used again and again.

commercial studies waste products conservation of natural and energy resources energy conservation and sources reduce, recycle, reuse importance of the conservation of natural resources recycling recycling of paper ways to reduce non degradable garbage

  1. Reuse

  2. Invent

  3. Both A and B

  4. None of the above

Show answer
Correct Option: A
Explanation:

In reuse strategy for saving the environment, things are used again and again. Many items found around the home can be used for different purposes. So before you throw those items away, think about how they can be reused.

What is the most valuable recyclable component of a circuit board?

commercial studies waste products conservation of natural and energy resources energy conservation and sources reduce, recycle, reuse importance of the conservation of natural resources recycling

  1. Copper

  2. Silver

  3. Gold

  4. Platinum

Show answer
Correct Option: B

How much radiant energy will an object emit if its temperature is at absolute zero?

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

  1. The maximum theoretical amount

  2. None

  3. The same as it would at any other temperature

  4. Depends on the chemical composition of the object

Show answer
Correct Option: B

Match the following.

(i) Oil reserve lasts for (a) $252$ years 
(ii) Gas reserves lasts for (b) $45$ years
(iii) Coal reserves lasts for (c) $72$ years
evs sources of water conservation of natural and energy resources energy conservation and sources reduce, recycle, reuse importance of the conservation of natural resources

  1. i-b, ii-c, iii-a

  2. i-c, ii-b, iii-a

  3. i-a, ii-b, iii-c

  4. i-a, ii-c, iii-b

Show answer
Correct Option: A

Method of managing used envelope: Reuse: : Method of managing fuels.

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

  1. Recycling

  2. Use for repurpose

  3. Reduce the use

  4. Refuse the use

Show answer
Correct Option: C

Per capita daily consumption of energy is lowest in

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

  1. USA

  2. UK

  3. India

  4. Russia

Show answer
Correct Option: C

To meet energy crisis what other sources can be exploited?

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

  1. Wind

  2. Water

  3. Nuclear

  4. All of the above

Show answer
Correct Option: D
Explanation:

The wind, water, and nuclear energy are renewable forms of energy resources. These reserves once consumed can be replenished again. When there is an energy crisis, due to the reduction in the number of energy reserves, there will be an increase in the use of renewable resources. These energy resources can be exploited for the production of energy when there are no other resources available. 

Thus, the correct answer is option D. 

Greatest problem in the water conservation is to reduce the amount of

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

  1. Ground water

  2. Precipitation

  3. Evaporation

  4. Run off water

Show answer
Correct Option: C
Explanation:

Evaporation from water reservoirs in hot arid climates causes a loss of 10 vertical feet a year. This water loss can be controlled by construction of reservoirs with greater water depth and concentration of water into single reservoir. Also wind blowing across the surface of water reservoir causes additional evaporation. A windbreak helps to conserve water. Thus the correct answer is option C.

The best way to conserve energy is 

evs sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources

  1. Install exhaust fan at a high elevation

  2. Use of fluorescent bulbs

  3. Turn off light when not in use

  4. All of the above

Show answer
Correct Option: D
Explanation:

Conservation of energy is of great concern nowadays. Light is also a form of energy which should not be wasted. The best way to conserve the light energy are as follows.

(i) Turn off the lights when not in use.
(ii) De-dust lighting fixtures to maintain illumination.
(iii) LED Lamps should be used instead of conventional incandescent bulbs. For example, a 16w LED bulb can be as bright as 150w halogen lamp. LED lamp consumes 1/3rd of CFL energy and 1/30th energy of incandescent bulbs. 
(iv) Conventional regulators should be replaced with electronic regulators for ceiling fans.
(v) Install exhaust fans at a higher elevation than ceiling fans. In diary/poultry industry usage of multi fan axial fans leads to low energy consumption with low noise levels etc.
Thus, the correct option is D.