1.

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.

Answer»

A and R CORRECT, R EXPLAINS the A.
A is correct, R is WRONG.
A is wrong, R is correct.
A and R are correct, R doesn't explains A.

Solution :A and R are correct, R explains the A.


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