1.

Assertion : The atomic masses of most of the elements are in fraction. Reason : The atomic mass represents the ratio of the average mass of the atom to one avogram.

Answer»

Both assertion and REASON are correct and reason is the correct EXPLANATION for assertion .
Both assertion and reason are correct but reason is not the correct explanation for assertion .
Assertion is true but reason are FALSE.
Both assertion and reason are false

ANSWER :A::B::C::D


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