EASY
7th CBSE
IMPORTANT
Earn 100

What are the constituents of stainless steel?

Important Questions on Physical and Chemical Changes

EASY
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 6 - Physical and Chemical Changes>Exercise>Q C

 In which of the following processes, a new substance is formed?

EASY
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 6 - Physical and Chemical Changes>Exercise>Q C

Dissolving salt in water is a/an _____.

EASY
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 6 - Physical and Chemical Changes>Exercise>Q C

The cut surface of brinjal turns black due to a _____ change.

EASY
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 6 - Physical and Chemical Changes>Exercise>Q C
In galvanization, iron objects are coated with 
EASY
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 6 - Physical and Chemical Changes>Exercise>Q C
Magnesium ribbon burns with dazzling _____ light forming ash.
EASY
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 6 - Physical and Chemical Changes>Exercise>Q C
Magnesium ribbon burns in air to form _____.
MEDIUM
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 6 - Physical and Chemical Changes>Exercise>Q C
When an iron nail is kept in copper sulphate solution, the blue colour of copper sulphate solution changes to 
EASY
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 6 - Physical and Chemical Changes>Exercise>Q D

Circle the odd one. Give reasons for your choice:

Stretching of a rubber band,      photosynthesis in plants,      formation of clouds,      melting of wax.