KEAM 2018

The neopentyl halide in ethanol yields alkenes by El mechanism due to

The compound that does not undergo hydrolysis by ${\mathrm{S}}_{\mathrm{N}}1$mechanism is

The compound which does not lead to nitrile by substitution with $NaCN/DMSO$ is

The halogen compound which will not react with phenol to give ethers is

Propylene on treatment with $\mathrm{HBr}/{\mathrm{H}}_2{\mathrm{O}}_2$ provides

Neopentyl bromide, undergoes dehydrohalogenation to give alkenes even though it has no $\text{β}-\text{H}$. This is due to