Chemistry Test ...

Choose the process by which liquid hydrocarbons can be converted to gaseous hydrocarbons.

Identify the compounds which are reduced and oxidised in the following reaction.

\(3 \mathrm{~N}_{2} \mathrm{H}_{4}+2 \mathrm{BrO}_{3}^{-} \rightarrow 3 \mathrm{~N}_{2}+2 \mathrm{Br}^{-}+6 \mathrm{H}_{2} \mathrm{O}\)

The hybrid state of sulphur in SO₃ molecule is: 

Starting from alumina would obtain:

An organic compound A reacts with sodium metal and forms B. On heating with conc. H2SO4, A gives diethyl ether. What are A and B?

C₂H₆ compound has:

The enthalpy of vaporisation of a substance is \(8400{~J} {~mol}^{-1}\) and its boiling point is \(-173.15^{\circ}{C}\). The entropy change for vaporisation is:

For a chemical reaction,

\(\mathrm{m}_{1} \mathrm{~A}+\mathrm{m}_{2} \mathrm{~B} \rightarrow \mathrm{n}_{1} \mathrm{C}+\mathrm{n}_{2} \mathrm{D}\)

The ratio of rate of disappearance of \(\mathrm{A}\) to that of appearance of \(\mathrm{C}\) is:

The increasing order of the first ionisation enthalpies of the elements B, P, S and \(\mathrm{F}\) (lowest first) is:

In which of the following conditions, the potential for the following half-cell reaction is maximum?

\(2 \mathrm{H}^{+}+2 e \rightarrow \mathrm{H}_{2}\)