EASY
Earn 100

Observe the picture carefully and answer the following question.

Question Image

When you make jelly, you mix the jelly powder with water to make a solution.

What has happened to the jelly powder?

Important Questions on A River’s Tale

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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
Fill in the blank using the right word:
We should drink _____ (clean/distilled) water.
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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
_____ is the substance that dissolves in a solvent.
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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
The polar ice caps are formed due to:
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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
Daily human activities like bathing in the river does not cause pollution.
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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
The process of filtration is used to remove
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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid

Correct the following sentence by changing the underlined word.

Filtration and condensation are used to remove soluble impurities from water.

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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid

Write [G] for good habits and [B] for bad food habits.

We should not drink enough water. [ ]

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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
Describe how water can become polluted. What can we do to keep water clean?
MEDIUM
Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid

Distinguish between.

Soluble and Insoluble impurities.

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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
Which of the following is not soluble in water?
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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
 Polluted water causes _____ in humans.
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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
Chemicals like chlorine, bleaching powder or potassium permanganate are added to the water to make it 
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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
The process by which the water droplets melt in the clouds and fall on the ground is called _____.
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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
Write three ways to make water safe for drinking.
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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid

Fill in the blank with an appropriate word:

Water is used to put out _____ (fire/air).

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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
The solute and solvent together form a _____.
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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
Why do we need to filter or boil water before drinking?
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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid

Choose the right word and fill in the blank:

We should not throw waste in _____. (dustbin/water bodies)

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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid

Fill in the blank with an appropriate word:

Mixing of jelly crystals in water is _____ (illusion/solution/pollution).

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Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
Which of the following diseases is caused due to regular drinking of polluted water?