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JEE CHEMISTRY MCQ: ALDEHYDES & KETONES & CARBOXYLIC ACIDS

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\text{C}{{\text{H}}_{3}}-\text{CHO}+\text{HCN}\xrightarrow[{}]{{}}\text{A}\xrightarrow{{{\text{H}}_{3}}{{\text{O}}^{+}}}\text{B}

Choose correct statement about sequence:

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Correct option: D

All of the above

The correct answer is D (All of the above) because the formation of A is a nucleophilic addition, B is optically active, and the intermediate in step I is a hydroxy alkoxide ion.

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By passing water gas

\left( {\mathrm{CO} + {\mathrm{H}_2}} \right)

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\mathrm{HCl}

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(i) Protonates the oxygen of the carbonyl compounds

(ii) Increases the electrophilicity of the carbonyl carbon

(iii) Removes the excess moisture from the reaction

(iv) Helps the reaction to move in the forward direction Benzyl alcohol and sodium benzoate is obtained by the action of sodium hydroxide on benzaldehyde. This reaction is known as Which one of the following reactions is a condensation reaction? Carboxylic acids dimerise due to The number of aldehyde isomers for

{C_4}{H_8}O

will be