Assertion- Atomic mass of calcium is 40 u.
Reason- An atom of calcium is 40 times heavier than an atom of carbon with mass 12 u.

both assertion and reason are correct and the reason is the correct explanation for assertion.

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both assertion and reason are correct but reason is not the correct explanation for assertion

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the assertion is correct but the reason is incorrect

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the assertion is incorrect but the reason is correct.

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Solution

The correct option is C
the assertion is correct but the reason is incorrect

An atom of calcium is 40 times heavier than 1/12th of the mass of an atom of carbon with mass 12u.
hence the correct option is (c) the assertion is correct but the reason is incorrect.

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Similar questions

39 u

39

\frac{1}{12}

(C^{12})

Assertion (A) : Atomic mass of aluminum is 27.
Reason (R) : An atom of aluminum is 27 times heavier than 1/12 th of the mass of the C – 12 atom.

10

\frac{1}{12}

C - 12

1 / 12

C^{12}

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