Tag: water resources and conservation

Questions Related to water resources and conservation

Which of the following increase the rate of percolation of rain water into the soil?

chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

  1. Constructing check dams

  2. Vegetation and trees

  3. Overgrazing

  4. All of the above

Show answer
Correct Option: A

Rain water harvesting is a method employed to:

chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

  1. stop soil erosion

  2. raise the water table 

  3. increase afforestation 

  4. decrease floods and droughts 

Show answer
Correct Option: B
Explanation:

Rainwater harvesting is the accumulation and storage of rainwater for reuse on-site, rather than allowing it to run off. All the water was collected into a well and helps in raising water table.

"Catch it where it falls" is the basic idea behind :

chemistry water: a natural resource water resources and conservation receding water table water conservation and irrigation

  1. making dams to store water

  2. recycling of water

  3. rain water harvesting

  4. condensation of water vapour

Show answer
Correct Option: C
Explanation:

'Catch it where it falls'  is the basic idea behind the rain water harvesting. Rain water harvesting is the accumulation and storage of rain water for reuse on site rather than allowing it to run off.

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

Show answer
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

Show answer
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

Show answer
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

Show answer
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

Show answer
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

Show answer
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

Show answer
Correct Option: B
Explanation:

Burning hydrogen with oxygen give rise to formation of water.