Tag: evs - i

Questions Related to evs - i

Gases which increase the temperature of the atmosphere such as carbon dioxide, methane, chlorofluorocarbon, etc are known as ___ gases.

evs - i what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

  1. Green house

  2. Blue house

  3. White house

  4. Red house

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Correct Option: A
Explanation:

Greenhouse gases,

Some greenhouse gases occur naturally and enter the atmosphere as a result of both natural processes (such as decomposition of organic matter) and human activity (such as burning fossil fuels and agriculture). Greenhouse gases that occur both naturally and from human activities include water vapor, carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and ozone (O3). Other greenhouse gases have essentially no natural sources, but are side products of industrial processes or manufactured for human purposes such as cleaning agents, refrigerants, and electrical insulators. These include the fluorinated gases: chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), hydrofluorocarbons (HCFCs), bromofluorocarbons (halons), perfluorocarbons, PFCs, nitrogen trifluoride, NF3, and sulfur hexafluoride, SF6.

These gases contribute to atmospheric warming when they absorb infrared radiation emitted by the solar-warmed Earth and transfer their extra energy to the surrounding atmospheric gases.

As we go up the layers of the atmosphere, the pressure ________.

evs - i what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

  1. Increases

  2. Decreases

  3. Remains the same

  4. All of these

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Correct Option: B
Explanation:
The weight of the atmosphere acts as a force upon the underlying surface of the Earth. The amount of force exerted over an area of surface is called atmospheric pressure or air pressure. In the atmosphere, the air pressure at any point is caused by the weight per area of the air above that point. As we go up the layers of the atmosphere, fewer air molecules are above us. So, there will be less weight of air above us. Hence, atmospheric pressure always decreases as we move upward in the atmosphere.

The inert gas which constitutes about 1% of the earths atmosphere is ____________.

evs - i what is around us? atmosphere and its structures the atmosphere components of earth elements of weather and climate : temperature the earth's structure

  1. Helium

  2. Neon

  3. Krypton

  4. Argon

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Correct Option: D
Explanation:

Argon is the third most abundant gas in our atmosphere, making up about one percent in terms of moles of gas.

What is the percentage of ${92} _U^{235} in \,92 _U^{238}$?

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. 0.2%

  2. 0.7%

  3. 98%

  4. 100%

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Correct Option: B

How many nuclear power stations does India have at present?

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. 2

  2. 3

  3. 4

  4. None of these

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Correct Option: D

India's uranium supply comes mainly from the Jaduguda mines in.

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. Jharkhand

  2. Madhya Pradesh

  3. Maharashtra

  4. None of these

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Correct Option: A

In India, uranium is found in.

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. U.P

  2. M.P

  3. Bihar

  4. Orissa

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Correct Option: C

Sound is form of

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. Energy

  2. Matter

  3. Radiation

  4. Electromagnetic energy

  5. None of the above

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Correct Option: A
Explanation:

Sound is considered as a form of energy because it obeys the First Law of Thermodynamics which states that energy can neither be created nor destroyed but it changes from one form to another. Sound energy is produced when an object vibrates. The sound vibrations cause waves of pressure that travel through a medium, such as air, water, wood or metal. Sound energy is a form of mechanical energy.

The vast amount of ses weeds present in oceans may provide an endless source of.

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. nuclear energy

  2. methane

  3. thermal energy ocean

  4. none of these

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Correct Option: B

Choose the source of energy which is different from others.

evs - i substances, objects and energy renewable and non-renewable resources renewable and non-renewable sources of energy solar energy and its applications renewable resources alternative fuels and energy sources alternative sources of energy

  1. Natural gas

  2. Petroleum

  3. Uranium

  4. Wood

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Correct Option: D