For the reaction given below,which of the following is not a possible product?
$H_2C=CH_2 + Br_{2(aq)} \xrightarrow{NaCl} \text{Products}$

Find out the major product of the following reaction:
$2 \text{ mole } CH_2=CH-CH_2Br \xrightarrow{Mg, T.H.F.} \text{?}$

Which of the following alkenes yield $3-$bromo$-3-$methylpentane as the major product upon addition of $HBr$?
$(I)$ $3-$methylpent$-2-$ene
$(II)$ $3-$methylpent$-2-$ene (isomer)
$(III)$ $3-$ethylpent$-1-$ene
$(IV)$ $3-$methylpent$-1-$ene

Ozonolysis of $2-$methyl$-2-$butene,in presence of $Zn,$ yields $--$

The total number of alkenes possible by dehydrobromination of $3$-bromo-$3$-cyclopentylhexane using alcoholic $KOH$ is

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R.$
Assertion $A :$ Treatment of bromine water with propene yields $1-$bromopropan$-2-$ol.
Reason $R:$ Attack of water on bromonium ion follows Markovnikov rule and results in $1-$bromopropan$-2-$ol.
In the light of the above statements,choose the most appropriate answer from the options given below: