Amines behave as

When carbon monoxide is passed over solid caustic soda heated to \(200^{\circ} \mathrm{C}\), it forms

Coupling reaction is an example of

For a reaction, if \(K_{P}>K_{C}\), the forward reaction is favoured by

The enthalpies of combustion of \(\mathrm{H}_2, \mathrm{C}\) (graphite) and \(\mathrm{C}_2 \mathrm{H}_6(\mathrm{~g})\) are \(-286.0,-394.0\) and \(-1560.0 \mathrm{~kJ} \mathrm{~mol}^{-1}\) at \(25^{\circ} \mathrm{C}\) and 1 atm pressure. The enthalpy of formation of ethane is:

In the estimation of element \(\mathrm{X}\) in an organic compound, \(0.8 \mathrm{~g}\) of the compound containing \(\mathrm{X}\) was heated with fuming \(\mathrm{HNO}_3\) and the cooled product was treated with barium chloride. The mass of barium sulphate precipitated was \(1.2 \mathrm{~g}\). What is the percentage of element \(\mathrm{X}\) and what is the formula of the violet-coloured compound formed when Lassaigne's extract of the organic compound is treated with sodium nitroprusside?

Match the coordination compounds in Column I having the given type of hybridisation of \(\mathrm{M}^{\mathrm{n}+}\) ion and magnetic moment as given in Column II.
\(\begin{array}{|l|l|l|l|} \hline & \text { Coordination compounds. } & & \text { Hybridisation \& Magnetic nature. } \\ \hline \text { A } & \mathrm{Ni}(\mathrm{CO})_4 & \text { P } & \mathrm{sp}^3, \quad \mu=5.92 \mathrm{BM} \\ \hline \text { B } & {\left[\mathrm{Ni}(\mathrm{CN})_4\right]^{2-}} & \text { Q } & \mathrm{sp}^3, \quad \mu=2.84 \mathrm{BM} \\ \hline \text { C } & {\left[\mathrm{Ni}(\mathrm{Cl})_4\right]^{2-}} & \text { R } & \mathrm{sp}^3, \quad \mu=0 \\ \hline \text { D } & {[\mathrm{MnBr}]^{2-}} & \text { S } & \mathrm{dsp}^2, \quad \mu=0 \\ \hline \end{array}\)

Which of the following is aromatic?

If \(\theta\) be the angle between the vectors \(a=2 \hat{i}+2 \hat{j}-\hat{k}\) and \(b=6 \hat{i}-3 \hat{j}+2 \hat{k}\), then

Let \(f(x)=5+(2 x-3)^{\frac{4}{3}}\), then the minimum value of \(f(x)\) is

Two masses of \(1 g\) and \(9 g\) are moving with equal kinetic energy. The ratio of magnitude of their momentum is

The dimensions of universal gravitational constant is

The coordination number of sodium chloride is