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Standard XII
Chemistry
Percentage Composition
Gram molecula...
Question
Gram molecular mass of carbon is:
A
6
g
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B
11
g
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C
12
g
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D
14
g
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Solution
The correct option is
B
12
g
Gram molecular mass is the mass in grams of one mole of a molecular substance.
For example, the gram molecular weight of water
H
2
O
is [
2
×
1
(atomic mass of hydrogen) +
16
(atomic mass of oxygen)] =
18
g
Similarly, the gram molecular mass of carbon is
12
g
Hence, the correct option is
C
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