Tag: natural cycles and resources

Questions Related to natural cycles and resources

_________ form of water is present in oceans, lakes, rivers and even underground.

chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

  1. Liquid 

  2. The gaseous

  3. The solid form

  4. None of the above

Show answer
Correct Option: A
Explanation:

Water can be found in liquid form in oceans, rivers, lakes and rain; in solid form in ice and snow; and as a gas (water vapour) in the atmosphere.

Snow and ice, are present as ________ at the poles of the earth, snow-covered mountains, and glaciers.

chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

  1. liquid form

  2. the solid form

  3. the gaseous form

  4. none of the above

Show answer
Correct Option: B
Explanation:

Water can be found in liquid form in oceans, rivers, lakes and rain; in solid form in ice and snow; and as a gas (water vapour) in the atmosphere.


Hence, option B is correct.

_______ of the earth's surface is covered with water.

chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

  1. 71%

  2. 72%

  3. 73%

  4. 74%

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Correct Option: A
Explanation:

$71\%$ of the earth's surface is covered with water. Hence, earth is also known as the Blue Planet.

Which of the following is potable water?

chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

  1. A glass of water fit for drinking

  2. Water in a pot

  3. Sea water

  4. Water with bacteria and chemicals

Show answer
Correct Option: A
Explanation:

A glass of water is fit for drinking. Water in a pot may contain impurities like dust, sand, etc. Sea contains huge number of impurities including huge levels of salts and water with bacteria and chemicals and is not preferred for drinking. 

How much of the Earth's surface is covered with water?

chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

  1. About two-third

  2. About one-fourth

  3. About three-fourth

  4. About one-third

Show answer
Correct Option: C
Explanation:

About three-fourth of the Earth's surface is covered with water, i.e., about $71\%$ of the earth's surface has water in it.  

Water vapour present in the air around us as:

chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

  1. the solid form

  2. the gaseous form

  3. liquid form

  4. none of the above

Show answer
Correct Option: B
Explanation:

Water can be found in liquid form in oceans, rivers, lakes and rain; in solid form in ice and snow; and as a gas (water vapour) in the atmosphere.

Distilled water is a form of natural water.

chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

  1. True

  2. False

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Correct Option: B
Explanation:

Distilled water is not a form of natural water. It is one of the form of purified water.

The water is collected from:

chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

  1. lakes

  2. rivers, ponds

  3. wells

  4. all of the above

Show answer
Correct Option: D
Explanation:

The water is collected from all of the above natural sources i.e lakes, rivers, ponds, and wells.

The approx. percentage of water in human body is:

chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

  1. 80 %

  2. 65 %

  3. 70 %

  4. 40 %

Show answer
Correct Option: C
Explanation:

The approx. percentage of water human body is $70\%$. The average adult human body is $50-65\%$ water, averaging around $57-60\%$. The percentage of water in infants is much higher, typically around $75-78\%$ water, dropping to $65\%$ by one year of age. Body composition varies according to gender and fitness level because fatty tissue contains less water than lean tissue. 

Water covers over :

chemistry air and atmosphere natural cycles and resources constituents of air component of air - nitrogen

  1. 70% of the earth's surface

  2. 60% of the earth's surface

  3. 80% of the earth's surface

  4. 90% of the earth's surface

Show answer
Correct Option: A
Explanation:

Water covers over 70% of the earth's surface.


Hence the correct option is A.