EASY
Earn 100

Things Dissolved in water Did not dissolve in water Colour of water changes Colour of water does not change
Salt

ü

    

ü
Turmeric powder  

ü

ü

  
Mustard oil  

ü

  

ü
Sand  

ü

ü

  

Do oil and sand dissolve in water?

Important Questions on A River’s Tale

MEDIUM
Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
Write three ways to make water safe for drinking.
EASY
Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
The solute and solvent together form a _____.
EASY
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).

EASY
Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
 Polluted water causes _____ in humans.
MEDIUM
Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid

Distinguish between.

Soluble and Insoluble impurities.

EASY
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 _____.
EASY
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.
MEDIUM
Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
Why do we need to filter or boil water before drinking?
EASY
Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
_____ is the substance that dissolves in a solvent.
EASY
Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
The polar ice caps are formed due to:
EASY
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?
EASY
Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
The process of filtration is used to remove
EASY
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).

EASY
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.
EASY
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)

EASY
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.

EASY
Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
Cotyledons are also called-
MEDIUM
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?
EASY
Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
Which of the following is not soluble in water?
EASY
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