Tag: availability and forms of water

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Questions Related to availability and forms of water

Multiple choice chemistry rain: where does it come from sources of water and water cycle availability and forms of water the water cycle

Evaporation is defined as:

  1. conversion of ice in water.

  2. conversion of water into water vapours.

  3. conversion of water vapours into the water.

  4. freezing of water into ice.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When water is heated it absorbs energy and changes its state from liquid (water) to gas(water vapours). This process of converting water in vapours is known as vaporisation.

Multiple choice biology rain: where does it come from sources of water and water cycle availability and forms of water the water cycle

Which of the following processes is unsuitable for softening water possessing temporary hardness?

  1. Adding calcium hydroxide

  2. Filtration

  3. Boiling

  4. Distillation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

If you added calcium oxide to water, it would react and make calcium hydroxide. Calcium hydroxide is produced, however, when calcium oxide is mixed (or slaked) with water. Overall, nothing significant happens when you mic Ca(OH)2 with water, certainly no reaction occurs. So, the correct option is "A" (Adding calcium hydroxide).

Multiple choice evs rain: where does it come from sources of water and water cycle availability and forms of water the water cycle

Which of the following is the most important factor in balancing the amount of freshwater on earth?

  1. Water cycle

  2. Greenhouse effect

  3. Waste water treatment plant

  4. Transpiration
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Water cycle is a continuous cycle in which water changes from water vapour in the atmosphere, through liquid water through condensation and precipitation and then back to water vapour through evaporation, transpiration and respiration. 

Among the given options, $A$ is the correct one. 

Multiple choice evs rain: where does it come from sources of water and water cycle availability and forms of water the water cycle

When water circulates through the water cycle it can be found in all the _________ form, at any given time somewhere on the earth.

  1. four

  2. two

  3. three

  4. six
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When water circulates through the water cycle it can be found in all the three forms, i.e., solid, liquid and gas at any given time somewhere on the earth. This continuous cycling of water in its three forms in nature keeps the total amount of water on earth constant even when the whole world is using it.