MEDIUM
7th CBSE
IMPORTANT
Earn 100

What do you understand by neutralization reaction?

Important Questions on Physical and Chemical Changes

MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 5
Why do iron nails get coated with copper when placed in the solution of copper sulphate in water?
HARD
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 1
Why does the exposed surface of a cut brinjal turns brown?
HARD
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 2
Does the browning of cut fruits reduce their nutritive values?
HARD
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 3
How do we save cut fruits and vegetables from getting brown or black?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 4
What kind of change is browning of a cut brinjal?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 1
Why is seawater salty?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 2
Name some salts which are present in sea water?
MEDIUM
7th CBSE
IMPORTANT
S. Chand's SCIENCE For Class VII>Chapter 6 - Physical and Chemical Changes>Test Your Learning Outcome>Q 3
How much salt can go into sea water?