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

The total number of alkyl bromides (including stereoisomers) formed in the reaction $(CH_3)_3C-CH=CH_2 + HBr \rightarrow$ will be

In the given reaction $x$ is: $CH_3 - C \equiv CH$ $\xrightarrow{\text{Excess } HCl} (A)$ $\xrightarrow{H_2O/OH^{-}} (x)$

Ozonolysis of an organic compound gives formaldehyde as one of the products. This confirms the presence of:

Assertion : $trans-2-Butene$ on reaction with $Br_2$ gives $meso-2,3-dibromobutane$.
Reason : The reaction involves $syn-addition$ of bromine.

What product is formed when $Br_2$ is added to ethylene in the presence of aqueous $NaCl$?