Competitive Thinking

Which of the following is planar?

For the estimation of nitrogen, $1.4 \mathrm{g}$ of an organic compound was digested by Kjeldahl method and the evolved ammonia was absorbed in $60 \mathrm{mL}$ of $\frac{\text{M}}{10}$ sulphuric acid. The unreacted acid required $20 \mathrm{mL}$ of $\frac{\text{M}}{10}$ sodium hydroxide for complete neutralization. The percentage of nitrogen in the compound is _____.

Quantitative measurement of nitrogen in an organic compound is done by the method______.

Presence of nitrogen in which among the following compounds CANNOT be detected by Lassaigne method?

A hydrocarbon has $75\% \mathrm{C}$. How much ${\text{CO}}_{\text{2}}$ in $\mathrm{g}$ will be obtained on complete combustion of $0.8 \mathrm{g}$ of hydrocarbon?

In Duma's method for estimation of nitrogen, $0.25 \mathrm{g}$ of an organic compound gave $40 \mathrm{mL}$ of nitrogen collected at $300 \mathrm{K}$ temperature and $725 \mathrm{mm} \mathrm{of} \mathrm{Hg}$ pressure. If the aqueous tension at $300 \mathrm{K}$ is $25 \mathrm{mm} \mathrm{of} \mathrm{Hg}$. If the aqueous tension at $300 \mathrm{K}$ is $25 \mathrm{mm} \mathrm{of} \mathrm{Hg}$, the percentage of nitrogen in the compound is:

Which of the following belongs to the homologous series of ${\mathrm{C}}_{\mathrm{5}}{\mathrm{H}}_{\mathrm{8}}{\mathrm{O}}_{\mathrm{2}}\mathrm{N}$?

Which one of the following has ${\mathrm{sp}}^{\mathrm{3}}, {\mathrm{sp}}^{\mathrm{2}}, \mathrm{sp}$ hybrid orbitals in the ratio $6:3:2?$