JEE MAIN - Chemistry (2019 - 8th April Evening Slot - No. 19)
The percentage composition of carbon by mole
in methane is :
80%
20%
75%
25%
Explanation
In CH4, there are 5 atoms (1C + 4H).
$$ \therefore $$ % composition of C by mole in CH4
= $${1 \over 5}$$ $$ \times $$ 100 = 20 %
$$ \therefore $$ % composition of C by mole in CH4
= $${1 \over 5}$$ $$ \times $$ 100 = 20 %
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