Given below are two statements: one is labelled as Assertion and the other is labelled as Reason.

Assertion: A mixture contains benzoic acid and napthalene. The pure benzoic acid can be separated out by the use of benzene.

Reason: Benzoic acid is soluble in hot water.

In the light of the above statements, choose the most appropriate answer from the options given below.

The reagent, from the following, which converts benzoic acid to benzaldehyde in one step is

The final product '$\mathrm{A}$' in the following reaction sequence

Consider the above reaction sequence and identify the product $\mathrm{B}$.

'$\mathrm{A}$' and '$\mathrm{B}$' respectively are

A. $\underset{\left(2\right)\mathrm{Zn}-{\mathrm{H}}_2\mathrm{O}}{\overset{\left(1\right){\mathrm{O}}_3}{\to }}$ Ethane-$1,2$-dicarbaldehyde $+$Glyoxal/Oxaldehyde

B $\underset{\left(2\right)\mathrm{Zn}-{\mathrm{H}}_2\mathrm{O}}{\overset{\left(1\right){\mathrm{O}}_3}{\to }} 5-$ -oxohexanal

Which of the following reactions will yield benzaldehyde as a product?