Qualitative and quantitative analysis

$10 \mathrm{mL}$ of hydrocarbon as exploded in excess of air. After cooling, there was a contraction in volume of $30 \mathrm{mL}$ and after treatment with $\mathrm{KOH}$, there was a further reduction of $30 \mathrm{mL}$. The formula of hydrocarbon is ${\mathrm{C}}_{\mathrm{x}}{\mathrm{H}}_{\mathrm{y}}$. The value of $\mathrm{x}+\mathrm{y}$ is 

Discuss the different types of test conducted for confirming radicals.

Define qualitative and quantitative analysis.

In Zeisel's method for the determination of methoxyl groups, a sample of 2.68 gm of a compound (A) gave 14.08 gm of AgI. If the molecular weight of compound (A) is 134, the number of (—OCH₃) group(s) in the compound (A) is:

Qualitative test of halogens in an organic compound is made by

Determine the value of percentage of nitrogen in the compound, when in Duma's method for the estimation of nitrogen $0.30 \mathrm{g}$ of organic compound gave $50 {\mathrm{cm}}^3$ of nitrogen gas collected at $300 \mathrm{K} \mathrm{and} 715 \mathrm{nm}$ pressure. Aqueous tension at $300 \mathrm{K}=15 \mathrm{mm} \mathrm{of} \mathrm{Hg}$.