$1,3-$Dibromopropane is heated with zinc dust in ether. The product formed is

$(i)$ Give the reaction for the bromination of ethane.
$(ii)$ Is this reaction suitable for obtaining pure bromoethane? Why?
$(iii)$ Give the name of the reaction mechanism and the names of the stages occurring in the reaction.
$(iv)$ Give the reaction for the first stage.
$(v)$ Which type of bond cleavage occurs in the first stage?

What are $N$ and $M$?

Excess of isobutane on reaction with $Br_{2}$ in presence of light at $125^{\circ} C$ gives which one of the following,as the major product?

The reaction of methane with concentrated $HNO_3$ at high temperature yields .........

What is the product formed when $(CH_3)_3CMgCl$ reacts with $D_2O$?