Aldehydes, Ketones and Carboxylic Acids

The major product of the following reaction is:

'A' and 'B' respectively are:

$A\underset{\left(2\right)Zn-H_{2}O}{\overset{\left(1\right)O_3}{\to }}$ Ethane-1, 2- dicarbaldehyde + Glyoxal / Oxaldehyde

$B\underset{\left(2\right)Zn-H_{2}O}{\overset{\left(1\right)O_3}{\to }}$ 5- oxohexanal

Identify the major products A and B for the below given reaction sequence.

Correct structure of   $\gamma -methylcyclohexane$ carbaldehyde is

In the below reaction, 5g of toluene is converted into benzaldehyde with 92% yield. The amount of benzaldehyde produced is____________* 10^-2 g. (Nearest integer)

The major product of the above reactions is:

Which of the following is an example of conjugated diketone?

A $\underset{\begin{array}{l}\left(ii\right)C{N}^{-}\\ (ii)H_{2}O/H^{+}\end{array}}{\overset{\begin{array}{l}\left(i\right)C{l}_2,\Delta \\ \end{array}}{\to }}$ 4-Bromophenyl acetic acid.

In the above reaction 'A' is

Which of the following carbocations is most stable?

Which of the following compounds will form the precipitate with aq. ${\mathrm{A}\mathrm{g}\mathrm{N}\mathrm{O}}_3$  solution most readily?