Find the correct reagents for the following reactions

Reactant is alkene and the product will be Markovnikov alcohol without rearrangement.

Choose... $$

Reactant is $2,3-$dibromobutane and the product is alkyne

$N\frac{a}{N}H3$

Reactant is $2-$hexyne and the $Cl2$ in $CCl4$ product is cis$-2-$hexene

The reactant is alkene and the

$Hg(OAc)2,H2O$ product is halohydrin

NaBH$4$

The reactant is alkene and the $Cl2$ and $H2O$ product is dihalide

Reactant is $2-$hexyne and the Lindlar catalyst product is trans$-2-$hexene

$Hg(OAc)2,CH3OH$

NaBH$4$

Question $11$

$H2SO4,H2O$

Not yet answered