The reaction for the preparation of ethene from ethyl chloride is known as......

Identify the correct decreasing order of reactivity of alkyl halides with ammonia.

In which of the following compounds,the $C-Cl$ bond ionization shall give the most stable carbocation?

Assertion: $2-$Bromobutane on reaction with sodium ethoxide in ethanol gives $1-$butene as a major product.
Reason: $1-$Butene is more stable than $2-$butene. According to Saytzeff's rule,$2-$butene should be the product which is more branched or substituted compound and hence,more stable than $1-$butene.

The major product obtained from the reaction of $2$-bromopentane with potassium ethoxide in ethanol is ....................

The reaction $Ph-CH_2-CH(F)-CH_3 \xrightarrow[EtOH]{KOH} X$. What is $X$?