The main product of the reaction between alcoholic silver nitrite $(AgNO_2)$ and ethyl bromide $(C_2H_5Br)$ is:

Ethylidene chloride on treatment with aqueous $KOH$ gives:

The major product of the following reaction is:

Identify the correct order for the given property for the following compounds. Choose the correct answer from the options given below:
$(A)$ Boiling Point: $CH_3CH_2Cl < CH_3CH_2CH_2Cl < CH_3CH_2CH_2CH_2Cl$
$(B)$ Density: $CH_3CH_2Br < CH_3CH_2Cl < CH_3CH_2I$
$(C)$ Boiling Point: $CH_3CH_2Br < (CH_3)_2CHBr < (CH_3)_3CBr$
$(D)$ Density: $CH_3CH(I)Br < CH_3CH_2CH_2Br < CH_3CH(Br)Cl$
$(E)$ Boiling Point: $CH_3CH_2CH_2CH_2Cl > (CH_3)_2CHCH_2Cl > (CH_3)_3CCl$

Identify the products $A$ and $B$ in the reactions :
$R-X + AgCN \longrightarrow A + AgX$
$R-X + KCN \longrightarrow B + KX$

The hydrolysis of optically active $2-$bromobutane with aqueous $NaOH$ results in the formation of: