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Chemistry CBSE Live product
Class 7 (2025-26)
Changes around us: Physical and chemical changes
Revision I - Physical and chemical changes
5.
Characteristics of physical and chemical changes
Question:
2.5
m.
Select
the
correct
answer for the following assertion and reason questions.
Assertion (A):
The explosion of fire cracker is a chemical change.
Reason (R):
A chemical change is a irreversible change.
Both A and R are true but R is not the correct explanation of A
A is false but R is true
Both A and R are true and R is the correct explanation of A
A is true but R is false
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