Haloalkanes and halo arenes practice · Mixed difficulty

Which of the following can be used as local anaesthetic?

Aryl halides can not be prepared by the reaction of aryl alcohols with ${PCl}_3, {PCl}_5$ or ${SOCl}_2$ because

Which one of the following is most reactive towards aqueous $NaOH$?

Which one of the following halides will not undergo oxidation with dimethyl sulfoxide?

In ${SN}^1$ reaction, the recemization takes place. It is due to

Statement I : Reaction of 2-bromo-3-mehylbutane with ethanol gives 2-ethoxy-3-methylbutane
Statement II : 1, 4-Hydride shift occurs and forms the unexpected product

For a given alkyl group, the densities/b. p./m. p. are in the order:

The carbon atom to which the halogen is attached can be

2-chlorobutane obtained by chlorination of butane, will be:

The catalyst used in the preparation of an alkyl chloride by the action of dry ${HCl}$ on an alcohol is

Out of the following which is most and least reactive towards nucleophilic substitution respectively?
${\text{C}}{{\text{H}}_3}\mathop {\text{C}}\limits^{\begin{array}{cccccccccccccccccccc} {\text{O}} \\ {||} \end{array}} {\text{OC}}{{\text{H}}_2} - {\text{C}}{{\text{H}}_3}, {\text{C}}{{\text{H}}_3} - \mathop {\text{C}}\limits^{\begin{array}{cccccccccccccccccccc} {\text{O}} \\ {||} \end{array}} - {\text{Cl}}$

${\text{C}}{{\text{H}}_3} - \mathop {\text{C}}\limits^{\begin{array}{cccccccccccccccccccc} {\text{O}} \\ {||} \end{array}} - {\text{NH}} - {\text{C}}{{\text{H}}_3}, {\text{C}}{{\text{H}}_3} - \mathop {\text{C}}\limits^{\begin{array}{cccccccccccccccccccc} {\text{O}} \\ {||} \end{array}} - {\text{O}} - \mathop {\text{C}}\limits^{\begin{array}{cccccccccccccccccccc} {\text{O}} \\ {||} \end{array}} - {\text{C}}{{\text{H}}_3}$

The hydrolysis of alkyl halides by aqueous NaOH is best termed as :

S-I: $CHI_3$ gives a precipitate with ${AgNO}_3$ solution on heating but not ${CHCl}_3$

S-II: $C-I$ bond is quite weak as compared to ${C}-{Cl}$ bond

Solvent which is used in the synthesis of chlorofluorocarbons

Fires result from the combustion of alkali metals can be extinguished by:

For the reaction

$\mathrm{RCH}_{2} \mathrm{Br}+\mathrm{I}^{-} \stackrel{\text { Acetone }}{\longrightarrow} \underset{\text { major }}{\mathrm{RCH}_{2}} \mathrm{I}+\mathrm{Br}^{-}$

The correct statement is

The hydrogen atom in chloroform is:

Its exposure in air causes impaired hearing and vision. Higher level exposure causes nausea and numbness in fingers and toes. Direct skin contact causes intense burning and mild redness of skin and even burn cornea. Which of the following solvents is responsible for it?

Chlorine is most reactive towards NaOH in:

Which reagent is useful in increasing the carbon chain of an alkyl halide?

Lacrymator or tear gas is:

Which one of the following is excellent substrate for $\mathrm{SN}^2$ reaction?

The general molecular formula of alkyl halides is ______ .

Ethyl ortho formate is formed by heating ………… with sodium ethoxide.

S-I: ${CCl}_4$ and ${H}_2 {O}$ are immiscible.

S-II: ${C C l}_4$ is a polar solvent.

${\mathrm{S}_\mathrm{N}}1\mathrm{\;}$ reaction on optically active substrates mainly gives :

For the same alkyl (or) aryl group, boiling point, is more for

The industrial preparation of chloroform employs acetone and:

The reactivity of compounds towards ${SN}^{2}$ reaction

(i) ${MeBr}$

(ii) ${PhCH}_2 {Br}$

(iii) ${MeBr}$

(iv) ${p}-{MeO} {C_6} {H}_4 {Br}$

Finkelstein reaction