Arrange the following alkyl halides in decreasing order of their reactivity towards $ext{S}_ext{N}1$ reaction:

(i) CH$_3$CH$_2$CH$_2$CH$_2$Br

(ii) (CH$_3$)$_3$CBr

(iii) CH$_3$CH$_2$CHBrCH$_3$

(iv) CH$_3$CH$_2$CH$_2$CH$_2$Cl

Which halogen has the highest electronegativity?

Which one of the following compound does not react with bromine?

1, 2 Dibromopropane on treatment with ‘x’ moles of $NaN{H_2}$ followed by treatment with ${C_2}{H_5}Br$ gives a 2-pentyne. The value of ‘x’ is

Which of the following reaction(s) can be used for the preparation of alkyl halides?

i) $C{H_3}C{H_2}OH + HCl\xrightarrow{{{\rm{Anhyd}}{\rm{.ZnC}}{{\rm{l}}_2}}}$

ii) $C{H_3}C{H_2}OH + HCl o$

iii) ${(C{H_3})_3}COH + HCl o$

iv) ${(C{H_3})_2}CHOH + HCl\xrightarrow{{{\rm{Anhyd}}{\rm{.ZnC}}{{\rm{l}}_2}}}$

Predict the major product formed when (R)-2-bromobutane is treated with potassium tert-butoxide in tert-butanol.

Arrange the following C-X bonds in increasing order of bond enthalpy:

In the following reaction ${C_6}{H_5}C{H_2}Br\xrightarrow[{2){H_3}{O^ + }}]{{1)\,Mg,\,ether}}X$. The product ‘X’ is

Which of the following compounds will undergo an $ext{S}_ext{N}1$ reaction most readily?

Following reaction,

${\left( {{\rm{C}}{{\rm{H}}_3}} \right)_3}{\rm{CBr}} + {{\rm{H}}_2}{\rm{O}} o {\left( {{\rm{C}}{{\rm{H}}_3}} \right)_3}{\rm{COH}} + {\rm{HBr}}$

is an example of

In the $ext{S}_ext{N}1$ reaction of 2-chloro-2-methylpropane with water, the rate-determining step involves: