The gas used for artificial ripening of fruits is .......... .

An alkene,on ozonolysis,gives formaldehyde and acetaldehyde. The alkene is:

Select the incorrect option based on the given reactions:
Reaction $1$: Methylenecyclohexane + $dil. H_2SO_4 \rightarrow (P)$ (major product)
Reaction $2$: $1-$Methylcyclohexanol + $dil. H_2SO_4 \rightarrow (Q)$ (major product)

The reaction conditions used for converting $1, 2-$dibromoethane to ethene are

How many products are formed in the following reaction?
$1,4$-dimethylcyclohex-$1$-ene + $HBr \rightarrow$ ?

The products $A$ and $B$ formed in the following set of reactions are: