Chemistry Test ...

Two different first order reactions have rate constants \(\mathrm{k}_{1}\) and \(\mathrm{k}_{2}\) at \(\mathrm{T}_{1}\left(\mathrm{k}_{1}>\mathrm{k}_{2}\right)\). If temperature is increased from \(\mathrm{T}_{1}\) to \(\mathrm{T}_{2}\), then new constants become \(\mathrm{k}_{3}\) and \(\mathrm{k}_{4}\) respectively. Which among the following relations is correct?

On electrolysis of dilute sulphuric acid usingPlatinum (Pt) electrode, the product obtained atanode will be:

Which one of the following group contains biocatalysts?

Which of the following compounds contains \(1^{\circ}, 2^{\circ}, 3^{\circ}\) as well as \(4^{\circ}\) carbon atoms?

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

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

Which of the following oxidation state is common for all lanthanides?

The vapour pressure of a solvent decreased by 10 mm of mercury when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in the vapour pressure is to be 20 mm of mercury?

Which of the following group’s elements have smaller atomic radii?

Among the following mixtures, dipole-dipole as the major interaction is present in:

Which of the following compounds is expected to exhibit optical isomerism? [en = ethylenediamine]