Tag: water: a precious resource

Questions Related to water: a precious resource

Which of the following is mostly used as a drinking water source by us?

social science water: a precious resource sources of water and water cycle groundwater and depletion of water table water table the water cycle

  1. Sea water

  2. Glaciers

  3. Ground water

  4. None of these

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Correct Option: C
Explanation:

Groundwater is mostly used as drinking water source by us. 

Sea-water contains dissolved salt in it, hence it is not generally used for drinking purposes unless purified. 
Hence, the answer is C.

A depletion in the water table of a place is caused by which of the following?

social science water: a precious resource sources of water and water cycle groundwater and depletion of water table water table the water cycle

  1. Constructing factories and houses

  2. Making concrete roads and floors

  3. Deforestation

  4. All of these

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Correct Option: D
Explanation:

Constructing factories and houses involve a large scale of deforestation. Due to deforestation, the soil will not remain intact due to which the water holding capacity of the soil decreases which causes a depletion in the water table. Making of concrete floors and roads do not allow the rainwater to seep through the soil and therefore causes a fall in the level of the water table.


Hence, the correct option is $\text{D}$

Well water is an example of:

social science water: a precious resource sources of water and water cycle groundwater and depletion of water table water table the water cycle

  1. surface water

  2. rain water

  3. underground water

  4. river water

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Correct Option: C
Explanation:

Well water is an example of underground water. A water well is an excavation or structure created in the ground by digging, driving and or drilling to access ground water in underground aquifers. The well water is drawn by a pump or using containers such as buckets that are raised mechanically or by hand.

Treated water is:

evs water: a precious resource importance of water let's play with water water and its properties water resources and conservation

  1. distilled water

  2. potable water

  3. rain water

  4. river water

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Correct Option: A,B
Explanation:
Treated water is the one that has improved quality of water to make it more acceptable for a specific end-use. The end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many other uses, including being safely returned to the environment.
Distilled water is obtained after condensation of steam.
Potable water is the fittest form of water, suitable for consumption after treatment.
Rain water and river water contains dissolved gases, minerals and particulates from the environment. They are natural form of water.
Therefore option A and B are correct.

Water, ice and steam are all:

evs water: a precious resource importance of water let's play with water water and its properties water resources and conservation

  1. elements

  2. mixtures

  3. compounds

  4. none of these

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Correct Option: C
Explanation:

Compounds can exist in all three states(solid, liquid, gas) provided that they can be heated/cooled enough(to their respective boiling/melting points). Thus water, ice, and steam all are compounds of hydrogen and oxygen.

Levelling effect is mimimum in

evs water: a precious resource importance of water let's play with water water and its properties water resources and conservation

  1. Water

  2. DMSO

  3. Acetic acid

  4. Liquid ammonia

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Correct Option: A

Water is made of two elements, which are ________.

evs water: a precious resource importance of water let's play with water water and its properties water resources and conservation

  1. both solids

  2. both liquids

  3. both gases

  4. one liquid and the other a gas

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Correct Option: C
Explanation:

Water is made of Hydrogen and Oxygen, which are gases at STP. 

Dissolved salts in potable water provide only taste, but are useless for living being.

evs water: a precious resource importance of water let's play with water water and its properties water resources and conservation

  1. True

  2. False

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Correct Option: B
Explanation:

Dissolved salts in potable water provide taste and are useful for living being like calcium and magnesium ions.

_________ is celebrated as the world water day.

evs water: a precious resource importance of water let's play with water water and its properties water resources and conservation

  1. 20 March

  2. 22 March

  3. 18 March

  4. 16 March

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Correct Option: B
Explanation:

$22^{nd}$ of March every year is celebrated as the world water day.

By burning which of the following elements would you get water?

evs water: a precious resource importance of water let's play with water water and its properties water resources and conservation

  1. carbon

  2. hydrogen

  3. nitrogen

  4. None of the above

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Correct Option: B
Explanation:

Burning hydrogen with oxygen give rise to formation of water.