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Assertion : atomic mass of aluminium ...

Assertion : atomic mass of aluminium is 27
Reason : an atom of aluminium is 27 times heavier than `(1)/(12 ^(th))` of the mass of the C- 12 atom .

A

If both the assertion and the reason are true and the reason is the correct explanation of assertion.

B

If both the assertion and the reason are true and the reason is the correct explanation of assertion.

C

Assertion is true ,but the reason is false .

D

Assertion is false ,but the reason is true .

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