Identify the product obtained when a ketone reacts with hydrazine $(NH_2-NH_2)$.

Identify $A$ and $B$ from the following reactions:
$(I)$ $CH_3-CH=CH-CH_3 \xrightarrow{\text{(i) } O_3}{\text{(ii) } Zn-H_2O} 2X$
$(II)$ $2X$ $\xrightarrow[2. \Delta]{1. NaOH \text{ (dil.)}} Z$ $\xrightarrow[\text{(ii) } Zn-H_2O]{\text{(i) } O_3} A + B$

Which of the following compounds gives only a primary alcohol on reaction with a Grignard reagent $(RMgX)$?

Which of the following compounds will most readily be dehydrated to give an alkene under acidic conditions?

Which of the following does not give a brick red precipitate with Fehling solution?

To distinguish between formaldehyde and acetaldehyde,we require