Tag: evs - i

Quizzes (164) Questions (1366)

Questions Related to evs - i

Multiple choice 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

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

  1. Green house

  2. Blue house

  3. White house

  4. Red house
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

Multiple choice 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

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

  1. Increases

  2. Decreases

  3. Remains the same

  4. All of these
Reveal answer Fill a bubble to check yourself
B Correct answer
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.
Multiple choice 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

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

  1. 0.2%

  2. 0.7%

  3. 98%

  4. 100%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Natural uranium consists of about 99.3% U-238 and only about 0.7% U-235. The question asks for the percentage of U-235 in natural uranium.

Multiple choice 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

How many nuclear power stations does India have at present?

  1. 2

  2. 3

  3. 4

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

India has more than 4 nuclear power stations currently operating including Tarapur, Rawatbhata, Kudankulam, Kaiga, Kakrapar, and Narora. The number changes as new reactors come online, making 'None of these' the only consistently correct answer.

Multiple choice 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

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

  1. Jharkhand

  2. Madhya Pradesh

  3. Maharashtra

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

The Jaduguda mine is a uranium mine located in the Purbi Singhbhum district of the state of Jharkhand in India.

Multiple choice 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

Sound is form of

  1. Energy

  2. Matter

  3. Radiation

  4. Electromagnetic energy

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

Multiple choice 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

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

  1. nuclear energy

  2. methane

  3. thermal energy ocean

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Seaweed and other biomass can be processed through anaerobic digestion to produce methane, which is a useful fuel source.

Multiple choice 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

Choose the source of energy which is different from others.

  1. Natural gas

  2. Petroleum

  3. Uranium

  4. Wood
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Natural gas, petroleum, and uranium are non-renewable energy sources. Wood is a renewable biomass source, making it the odd one out.