Tag: natural cycles and resources

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Questions Related to natural cycles and resources

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

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

  1. liquid form

  2. the solid form

  3. the gaseous form

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

Which of the following is potable water?

  1. A glass of water fit for drinking

  2. Water in a pot

  3. Sea water

  4. Water with bacteria and chemicals
Reveal answer Fill a bubble to check yourself
A Correct answer
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. 

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

The approx. percentage of water in human body is:

  1. 80 %

  2. 65 %

  3. 70 %

  4. 40 %
Reveal answer Fill a bubble to check yourself
C Correct answer
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.