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Question

Explosion of a fire work (such as a cracker)
  1. Can not be predicted
  2. Chemical
  3. Physical
  4. Both A and B possible according to condition

A
Both A and B possible according to condition
B
Physical
C
Can not be predicted
D
Chemical
Solution
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An explosion of a cracker is a chemical change because the explosive reactants are transformed into gaseous products along with heat, light, and sound which cannot be reversed.

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