Urea is a better fertilizer than ammonium sulphate because

An organic compound contains $69 \%$ carbon and $4.8 \%$ hydrogen,the remainder being oxygen. Calculate the masses of carbon dioxide and water produced when $0.20 \ g$ of this substance is subjected to complete combustion.

In which of the following pairs of compounds is the ratio of $C$,$H$,and $O$ the same?

If a compound on analysis was found to contain $C = 18.5\%$,$H = 1.55\%$,$Cl = 55.04\%$,and $O = 24.81\%$,then its empirical formula is:

$925$ fine silver means an alloy of :

On complete combustion of $0.492 \text{ g}$ of an organic compound containing $C$, $H$, and $O$, $0.7938 \text{ g}$ of $CO_2$ and $0.4428 \text{ g}$ of $H_2O$ were produced. The percentage composition of oxygen in the compound is $........$