Select the best answer for the following assertion and reason questions.
1.
| Assertion (A): | The explosion of fire cracker is a chemical change. |
| Reason (R): | A chemical change is a irreversible change. |
2.
| Assertion (A): | Breaking a glass tumbler is a physical change. |
| Reason (R): |
It is a irreversible change, some physical changes cannot be reversed.
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