71.

In the reaction,

CH₃CH₂C ≡ CH $\underset{\left(\mathrm{ii}\right) {\mathrm{H}}_2\mathrm{O}}{\overset{\left(\mathrm{i}\right) {\mathrm{O}}_3}{\to }}$ Products

Products will be:

• CH₃COCH₃

• CH₃COCH₂OH

• CH₃COOH + HCOOH

• CH₃CHO + HCHO

Ethyl alcohol can be prepared from Grignard reagent by the reaction of :

• HCHO

• R₂CO

• RCN

• RCOCl

Chlorobenzene gives aniline with

• NH₃/ Cu₂O

• NH₃/ H₂SO₄

• NaNH₂

• None of these

Ribose is an example of:

• ketohexose

• disaccharide

• pentose

• polysaccharide

Aldehydes can be oxidised by:

• Tollen's reagent

• Fehling's solution

• Benedict solution

• All of these