Tag: atmosphere- wind

Questions Related to atmosphere- wind

The largest reservoir of nitrogen on Earth is 

evs atmosphere- wind importance of oxygen is air present everywhere around us? air as a natural resource

  1. Soil

  2. Air

  3. Oceans

  4. Rocks

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Correct Option: B

Rising air cools by this process:

evs atmosphere- wind importance of oxygen is air present everywhere around us? air as a natural resource

  1. Expansion

  2. Evaporation

  3. Compression

  4. Condensation

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Correct Option: A

Sinking air warms by this process:

evs atmosphere- wind importance of oxygen is air present everywhere around us? air as a natural resource

  1. Compression

  2. Expansion

  3. Condensation

  4. Friction

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Correct Option: A

How many grams of air in a liter?

evs atmosphere- wind importance of oxygen is air present everywhere around us? air as a natural resource

  1. 1.5 gm

  2. 1.3gm

  3. 1.2gm

  4. 7gm

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Correct Option: B

Which of the following statement is true?

evs atmosphere- wind importance of oxygen is air present everywhere around us? air as a natural resource

  1. Hot air expands on heating.

  2. Hot air contracts on cooling.

  3. Cold air contracts on heating.

  4. None of the above.

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Correct Option: A
Explanation:
Air is a mixture which is composed of several gases like oxygen 21%, nitrogen 78%, carbon dioxide 0.03% and water vapors. The air molecules are held by strong intermolecular forces. When air is heated up, the air molecules absorb the heat and the intermolecular forces between the air molecules become weak and its kinetic energy increases. The air molecules move apart and become less dense and thus they expand on heating.
So, the correct answer is option A.

Choose the correct answer from the alternatives given.
The largest reservoir of nitrogen on earth is:

evs atmosphere- wind importance of oxygen is air present everywhere around us? air as a natural resource

  1. soil

  2. oceans

  3. air

  4. granite rocks

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Correct Option: C
Explanation:

It is true that 70% or so of the Air is nitrogen but that it needs to be the largest reservoir. Nitrogen is an essential part of most living organisms. Most of the bodily fluids and enzymes have nitrogen in a bonded form. This is true even in the case of plants. So, the correct answer is "Air".

Suppose two unsaturated air masses mix horizontally. The resulting mixture cannot possibly be saturated.

evs atmosphere- wind importance of oxygen is air present everywhere around us? air as a natural resource

  1. True

  2. False

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Correct Option: B

Temperature gradient of 'ambient' air is known as

commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

  1. Lapse rate

  2. ELR

  3. Atmospheric stability

  4. ALR

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Correct Option: B

What is adiabatic lapse rate for dry air?

commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

  1. 3.98C per 100meter

  2. 2.98C per 100meter

  3. 0.98C per 100meter

  4. 1.98C per 100meter

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Correct Option: C

What is air pressure at sea level?

commercial applications issues of the environment excessive consumption of resources atmosphere and its components atmosphere- wind

  1. 4033.6g/sq.cm

  2. 3033.6g/sq.cm

  3. 2033.6g/sq.cm

  4. 1033.6g/sq.cm

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Correct Option: D