When $2-$Chlorobutane is boiled with a concentrated alcoholic solution of $KOH$,the major product formed is:

In $S_{N}2$ reactions,the correct order of reactivity for the following compounds:

Chloroform is stored in dark-colored bottles in the presence of $:-$

Which of the following is most reactive towards nucleophilic substitution reaction?

$CH_3-CH_2-Br + Nu^{\Theta} \rightarrow CH_3-CH_2-Nu + Br^{\Theta}$
The decreasing order of the reaction rate with nucleophile $Nu^{\Theta}$ is $Nu^{\Theta} = (I) PhO^{\Theta}; (II) CH_3COO^{\Theta}; (III) OH^{\Theta}; (IV) CH_3O^{\Theta}$

State the general reactions of alkyl halides $(RX)$ with different nucleophiles.