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Question

Select the correct statements from the following.



Your Answer
A

Statement (i) is correct.

Correct Answer
B

Statement (ii) is correct.

Correct Answer
C

Statement (iii) is correct.

Your Answer
D

Statement (iv) is correct.


Solution

The correct options are
B

Statement (ii) is correct.


C

Statement (iii) is correct.


The mass of one molecule is known as molecular mass.
It is the sum of atomic mass of all the constituent atoms. The molecular mass when expressed in grams is known as the gram molecular mass. 
 

Molecule Gram molecular mass
H2 2×1 = 2 u
He 1×4 = 4 u
O2 2×16 = 32 u
Cl2 2× 35.5 = 71 u

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