The formula of ferric sulphate is:

The empirical formula of a compound is $CH$. Its molecular weight is $78$. The molecular formula of the compound will be

Which of the following has the highest percentage of chlorine?

An organic compound with a molecular weight of $60$ contains $C = 20\%$,$H = 6.67\%$,and $N = 46.67\%$,with the remainder being oxygen. Upon heating,the solid residue gives a violet color with alkaline copper sulfate solution. Identify the compound.

$0.01 \ mol$ of an organic compound $(X)$ containing $10\%$ hydrogen,on complete combustion produced $0.9 \ g \ H_2O$. Molar mass of $(X)$ is $.......... \ g \ mol^{-1}$.

Carbon percentage is maximum in