MEDIUM
Earn 100

What did you observe? Put Question Image mark in the right places.

Things Dissolved 
(mixed) 
in water 
 		 Did not 
dissolve 
in water 		 Colour of water 
changes 		 Colour of water 
does not change 
 
Sugar         
Salt         
Lemon juice        
Haldi         
Soap water         
Flour         
Sherbet         
Cooking soda        
Oil (Mustard, 
Til or any other) 		        
  

Now on the basis of your observations tell-

Do all things dissolve in water?  

 

Important Questions on A River’s Tale

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.
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
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
The process of filtration is used to remove
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

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

We should not drink enough water. [ ]

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?
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
Which of the following is not soluble in water?
EASY
Environmental Studies>Social Science>A River’s Tale>Water as a Wonder Liquid
 Polluted water causes _____ in humans.
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 
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 _____.
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

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
The solute and solvent together form a _____.
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

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

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
Which of the following diseases is caused due to regular drinking of polluted water?