Level 2

In Dumas method, $0.3 \mathrm{g}$ of an organic compound gave $45 \mathrm{mL}$ of nitrogen at $\mathrm{STP}$. The percentage of nitrogen is.

$0.2595 \mathrm{g}$ of an organic substance in a quantitative yielded $0.35 \mathrm{g}$ of the barium sulphate. The percentage of sulphur in the substance is.

$\mathrm{IUPAC}$ name of the compound

$$\begin{gathered} {\mathrm{CH}}_{\mathrm{3}}\mathrm{-}\underset{|}{\mathrm{C}}\mathrm{H}-{\mathrm{CH}}_{\mathrm{2}}-\mathrm{CH}\left(\mathrm{OH}\right)-{\mathrm{CH}}_{\mathrm{3}} \\ \mathrm{ }\underset{|}{\mathrm{C}}{\mathrm{H}}_{\mathrm{2}} \\ {\mathrm{CH}}_{\mathrm{3}} \end{gathered}$$ is _____

Which of the following statements are true about urea?

I. Urea is the first organic compound which is synthesised in the laboratory.

II. Urea is the best water-soluble nitrogenous fertilizer.

III. Urea leaves only ${\mathrm{CO}}_2$ after ammonia has been assimilated by plants.

In which of the following molecules or ions, the resonance effect is NOT present?

Which of the following is an example of elimination reaction?

Which of the following pair of miscible liquids require a fractionating column for their separation by distillations?

Which of the following is NOT a nucleophile?