- The catalyst used in the preparation of an alkyl chloride by the action of dry \(\mathrm{HCl}\) on an alcohol is

The frequency of photon which is emitted during a transition of electron of He\(^+\) ion from fifth energy level to third energy level will be:

Which of the following statements about benzyl chloride is incorrect?

Match the reaction in Column I with the major product formed given in Column II.
\(\begin{array}{|l|l|l|} \hline & \text { Column I- Reaction/conditions } & & \text { Column II- Product } \\ \hline A & \mathrm{C}_6 \mathrm{H}_6 \xrightarrow[\substack{\text{(ii) NaOH} \\ \text{(iii) H^+}}]{\text{(i) Oleum}} & P & \text { Pentan-2-ol. } \\ \hline B & \text{Butanal } \xrightarrow[\text{(ii) } \mathrm{H}^+]{\text{(i) } \text{MeMgBr/ dry ether}} & Q & \text { 2-Hydroxybenzoic acid. } \\ \hline C & \text {2-Methylpropene } \xrightarrow[\text { (ii) } \mathrm{H}_2 \mathrm{O}_2 / \mathrm{NaOH}]{\text { (i) } \mathrm{B}_2 \mathrm{H}_6} & R & \text { Phenol } \\ \hline D & \text{Phenol } \xrightarrow[\text { (ii) } \mathrm{CO}_2, 400 \mathrm{~K}, 7 \mathrm{~atm} .]{\text { (i) } \mathrm{NaOH}} & S & \text { 2-Methylpropan-1-0 I } \\ \hline \end{array}\)

Which one of the following compounds would not undergo Aldol condensation?

Lysine is

The instantaneous rate of disappearance of \(\mathrm{MnO}_4^{-}\)ion in the following reaction is \(2.28 \times 10^{-3} \mathrm{M} / \mathrm{s}\).
\(2 \mathrm{MnO}_4^{-}+10 \mathrm{I}^{-}+16 \mathrm{H}^{+} \longrightarrow 2 \mathrm{Mn}^{2+}+5 \mathrm{I}_2 +8 \mathrm{H}_2 \mathrm{O}\)
The rate of appearance of \(\mathrm{I}_2\) is \((x) \times 10^{-3} \mathrm{M} / \mathrm{s}\). The value of \(x\) is \(\qquad\) [Nearest integer]

Which of the following can participate in linkage isomerism?

The value of \(2^{\log _2 3} \cdot 3^{\log _3 2}\) is

164 . The solution of the differential equation \(\sec ^{2} x \tan y d x+\sec ^{2} y \tan x d y=0\) is

If the area of region bounded by the lines \(y=2 x+1, x\)-axis, \(x=a\) and \(x=3\) is 10 sq units. Then the value of ' \(a\) ' is

Identify the complex which exhibits all 3 characteristics; paramagnetic; high spin configuration; octahedral geometry

The heat required to increase the temperature of 4 moles of a mono-atomic ideal gas from \(273^{\circ} \mathrm{C}\) to \(473^{\circ} \mathrm{C}\) at constant volume is