The product formed in the reaction of H$X$ with ${\left( {{\rm{C}}{{\rm{H}}_3}} \right)_2}{\rm{C}}$=${\rm{C}}{{\rm{H}}_2}$ is:

${\left( {{\rm{C}}{{\rm{H}}_3}} \right)_2}{\rm{C}}X{\rm{C}}{{\rm{H}}_3}$

${\left( {{\rm{C}}{{\rm{H}}_3}} \right)_2}{\rm{CH}} \cdot {\rm{C}}{{\rm{H}}_2}X$

${\left( {{\rm{C}}{{\rm{H}}_3}} \right)_2}{\rm{CHC}}{{\rm{H}}_3}$

${\left( {{\rm{C}}{{\rm{H}}_3}} \right)_2}{\rm{C}}X{\rm{C}}{{\rm{H}}_2}X$

$\mathrm{CH}_3 \mathrm{CH}(\mathrm{Br}) \mathrm{CH}_2(\mathrm{Br})$

$\mathrm{CH}_2(\mathrm{Br}) \mathrm{CH}_2 \mathrm{CH}_2$

$\mathrm{CH}_2 \mathrm{BrCH}_2 \mathrm{Br}$

${{\rm{C}}_6}{{\rm{H}}_5}{\rm{Cl}}$ on treating with ${\rm{NaOH}}$ at $300^\circ C$ gives phenol. However the yield is poor because of side reaction producing:

${{\rm{C}}_6}{{\rm{H}}_5}{\rm{O}}{{\rm{C}}_6}{{\rm{H}}_5}$

${{\rm{C}}_6}{{\rm{H}}_5}{\rm{Na}}$

${{\rm{C}}_6}{{\rm{H}}_5}{\rm{OC}}{{\rm{H}}_3}$

Back to HALOALKANES AND HALO ARENES

Your Progress

0 / 110 Answered

Correct

Incorrect

Accuracy

NEET • CHEMISTRY • HALOALKANES AND HALO ARENES

Haloalkanes and halo arenes practice · Mixed difficulty

Try a question, then open “View answer” to check it. Sign in to submit answers and save progress.

Practice format and chapter quiz

The practice player uses single-correct-answer MCQs. Chapter quizzes help you review a topic; they are not full-length NEET mock papers.

Take a chapter quiz →

Showing 1-30 of 110 questions

1 Medium

1 of 110

Remembering +4 | -1

Which of the following compounds is an example of Freon?

View answer and explanation

Correct option: D

\mathrm{C}_2 \mathrm{Cl}_2 \mathrm{~F}_2

Option D (

\mathrm{C}_2 \mathrm{Cl}_2 \mathrm{~F}_2

) is correct because Freons are chlorofluorocarbons (CFCs) or hydrochlorofluorocarbons (HCFCs).

2 Medium

2 of 110

Analyzing +4 | -1

Which one of the following is most reactive towards aqueous

NaOH

View answer and explanation

Correct option: B

{\mathrm{C}_6}{\mathrm{H}_5}\mathrm{C}{\mathrm{H}_2}\mathrm{Cl}

Option B (

{\mathrm{C}_6}{\mathrm{H}_5}\mathrm{C}{\mathrm{H}_2}\mathrm{Cl}

) is correct because the chlorine atom is attached to a benzylic carbon, making it more susceptible to nucleophilic substitution reactions.

3 Medium

3 of 110

Analyzing +4 | -1

Which process does not occur during formation of

\mathrm{CHC}{\mathrm{l}_3}\mathrm{\;from\;\;}{\mathrm{C}_2}{\mathrm{H}_5}\mathrm{OH\;and\;bleaching}\;

powder?

View answer and explanation

Correct option: C

Elimination

Option C (Elimination) is correct because elimination reactions are not involved in the formation of chloroform from ethanol and bleaching powder.

4 Hard

4 of 110

Analyzing +4 | -1

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

View answer and explanation

Correct option: C

The transition state formed in the above reaction is less polar than the localised anion

Option C (The transition state formed in the above reaction is less polar than the localised anion) is correct because in SN2 reactions with acetone as the solvent, the transition state is less solvated and thus less polar than the separated ions.

5 Hard

5 of 110

Application +4 | -1

A solution of

Ni{(N{O_3})_2}

is electrolyzed between platinum electrodes using 0.1 Faraday electricity. How many mole of Ni will be deposited at the cathode?

View answer and explanation

Correct option: D

0.05

Option D (0.05) is correct because the number of moles of Ni deposited is calculated using Faraday's laws of electrolysis, considering that Ni has a +2 charge.

6 Easy

6 of 110

Understanding +4 | -1

Most reactive compound towards nucleophilic addition among the following is

View answer and explanation

Correct option: D

HCHO

Option D (HCHO) is the most reactive towards nucleophilic addition because it has the least steric hindrance and the carbonyl carbon is most electrophilic.

7 Easy

7 of 110

Remembering +4 | -1

The bad smelling substance formed by the action of alcoholic caustic potash on chloroform and aniline is:

View answer and explanation

Correct option: A

Phenyl isocyanide

Option A (Phenyl isocyanide) is correct because the reaction of chloroform with aniline in the presence of alcoholic KOH is the carbylamine reaction, which produces phenyl isocyanide (also known as phenyl isonitrile), which has a very unpleasant odor.

8 Hard

8 of 110

Remembering +4 | -1

Alkyl chloride is prepared by passing the..

A \ldots

through solution of alcohol. Here,

A

refers to

View answer and explanation

Correct option: C

dry

\mathrm{HCl}

gas

Option C (dry

\mathrm{HCl}

gas) is correct because alkyl chlorides are prepared by passing dry HCl gas through a solution of alcohol in the presence of a catalyst like anhydrous zinc chloride (Lucas reagent).

9 Easy

9 of 110

Remembering +4 | -1

Chlorobenzene is prepared commercially by:

View answer and explanation

Correct option: B

Raschig process

Option B (Raschig process) is correct because the Raschig process is an industrial process for the production of chlorobenzene from benzene, HCl, and oxygen.

10 Easy

10 of 110

Understanding +4 | -1

{\mathrm{S}_\mathrm{N}}1

mechanism for the reaction,

R - X + \mathrm{KOH}\; \to R\mathrm{OH} + \mathrm{K}X

follow :

View answer and explanation

Correct option: A

Carbocation mechanism

Option A (Carbocation mechanism) is correct because the

S_N1

mechanism involves the formation of a carbocation intermediate in the rate-determining step.

11 Easy

11 of 110

Application +4 | -1

The product formed in the reaction of H

X

with

{\left( {\mathrm{C}{\mathrm{H}_3}} \right)_2}\mathrm{C}

\mathrm{C}{\mathrm{H}_2}

is:

View answer and explanation

Correct option: A

{\left( {\mathrm{C}{\mathrm{H}_3}} \right)_2}\mathrm{C}X\mathrm{C}{\mathrm{H}_3}

Option A (

{\left( {\mathrm{C}{\mathrm{H}_3}} \right)_2}\mathrm{C}X\mathrm{C}{\mathrm{H}_3}

) is correct because the addition of HX to an alkene follows Markovnikov's rule, where the hydrogen adds to the carbon with more hydrogens, and the halogen adds to the more substituted carbon.

12 Medium

12 of 110

Application +4 | -1

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{{\mathrm{Anhyd}\mathrm{.ZnC}{\mathrm{l}_2}}}

ii)

C{H_3}C{H_2}OH + HCl \to

iii)

{(C{H_3})_3}COH + HCl \to

iv)

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

View answer and explanation

Correct option: C

I, III and IV only

Option C (I, III and IV only) is correct because primary, secondary, and tertiary alcohols can react with HCl to form alkyl halides, sometimes requiring a catalyst like anhydrous

ZnCl_2

13 Easy

13 of 110

Remembering +4 | -1

Lacrymator or tear gas is:

View answer and explanation

Correct option: C

{\mathrm{C}_6}{\mathrm{H}_5}\mathrm{COC}{\mathrm{H}_2}\mathrm{Cl}

Option C (

{\mathrm{C}_6}{\mathrm{H}_5}\mathrm{COC}{\mathrm{H}_2}\mathrm{Cl}

) is correct because

\alpha

-chloroacetophenone is a well-known lachrymator (tear gas).

14 Medium

14 of 110

Understanding +4 | -1

Isobutyl chloride and butyl chloride are:

View answer and explanation

Correct option: B

Chain isomers

Option B (Chain isomers) is correct because isobutyl chloride and butyl chloride have the same molecular formula but differ in the arrangement of the carbon chain.

15 Medium

15 of 110

Analyzing +4 | -1

Read the following statements
A. Gabriel phthalimide synthesis is used to prepare all

{1^0}

amines
B.

{C_6}{H_5}Cl{C_6}{H_5} - {C_6}{H_5}

is known as Wurtz reaction.
C. In

S{N^1}

mechanism there is more inversion than retention leading to partial racemization
D. All aldehydes give red precipitate with Fehling’s solution
E. Reactivity order of alkyl halides towards

S{N^2}

reaction is

{1^0} > {2^0} > {3^0}

Number of correct statements among these

View answer and explanation

Correct option: A

Option A is correct because only statements C and E are correct. Gabriel synthesis gives only primary amines, Wurtz reaction is different, aldehydes don't always give red precipitate.

Explore Other Chapters in CHEMISTRY

View All →

CHEMICAL BONDING & MOLECULAR STRUCTURE 595 MCQs THERMODYNAMICS 583 MCQs STRUCTURE OF ATOM 499 MCQs CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES 429 MCQs Equilibrium 412 MCQs STATES OF MATTER 410 MCQs

16 Medium

16 of 110

Application +4 | -1

Identify Z in

C{H_3}C{H_2}C{H_2}Br\xrightarrow{{Ag.NaOH}}X\xrightarrow[\Delta ]{{A{l_2}{O_3}}}Y\xrightarrow{{C{l_2}/{H_2}O}}Z

View answer and explanation

Correct option: B

C{H_3}CHOHC{H_2}Cl

Option B (

C{H_3}CHOHC{H_2}Cl

) is correct because the sequence of reactions leads to the formation of 1-chloropropan-2-ol.

17 Medium

17 of 110

Application +4 | -1

Sodium ethoxide reacts with ethyl iodide to yield:

View answer and explanation

Correct option: C

{\mathrm{C}_2}{\mathrm{H}_5}\mathrm{O}{\mathrm{C}_2}{\mathrm{H}_5}

Option C (

{\mathrm{C}_2}{\mathrm{H}_5}\mathrm{O}{\mathrm{C}_2}{\mathrm{H}_5}

) is correct because sodium ethoxide reacts with ethyl iodide via Williamson ether synthesis to form diethyl ether.

18 Medium

18 of 110

Remembering +4 | -1

Alkyl fluorides are synthesised by alkyl chloride/bromide in presence of ____ or ____

i)

Ca{F_2}

ii)

Co{F_2}

iii)

H{g_2}{F_2}

iv) NaF

View answer and explanation

Correct option: B

ii,iii

Option B (ii,iii) is correct because alkyl fluorides are synthesized from alkyl chlorides/bromides using heavy metal fluorides like

CoF_2

and

Hg_2F_2

in Swarts reaction.

19 Medium

19 of 110

Analyzing +4 | -1

Which of the following are arranged in decreasing order of dipole moment:

View answer and explanation

Correct option: B

\mathrm{C}{\mathrm{H}_3}\mathrm{Cl},\mathrm{\;C}{\mathrm{H}_3}\mathrm{F},\mathrm{\;C}{\mathrm{H}_3}\mathrm{Br}

Option B is correct because dipole moment depends on both electronegativity difference and bond length. Although F is more electronegative than Cl, the C-Cl bond is longer, resulting in a higher dipole moment for CH3Cl.

20 Hard

20 of 110

Remembering +4 | -1

Reaction of red phosphorus with bromine and iodine generate

View answer and explanation

Correct option: C

Both (1) and (2)

Option C (Both (1) and (2)) is correct because red phosphorus reacts with both bromine and iodine to form phosphorus tribromide (

PBr_3

) and phosphorus triiodide (

PI_3

), respectively.

21 Medium

21 of 110

Remembering +4 | -1

Which of the following represents Westrosol ?

View answer and explanation

Correct option: D

CC{l_2} = CHCl

Option D (

CC{l_2} = CHCl

) is correct because Westrosol is the common name for trichloroethylene, which has the formula

CC{l_2} = CHCl

22 Easy

22 of 110

Understanding +4 | -1

Gem-dibromide is

View answer and explanation

Correct option: B

\mathrm{CH}_3 \mathrm{CBr}_2 \mathrm{CH}_3

Option B (

\mathrm{CH}_3 \mathrm{CBr}_2 \mathrm{CH}_3

) is correct because gem-dibromides have two bromine atoms on the same carbon atom.

23 Hard

23 of 110

Remembering +4 | -1

Phenol is heated with

CHC{l_3}

and alcoholic

KOH

when salicylaldehyde is produced. The reaction is known as:

View answer and explanation

Correct option: B

Reimer-Tiemann reaction

Option B (Reimer-Tiemann reaction) is correct because the reaction of phenol with

CHCl_3

and alcoholic KOH to produce salicylaldehyde is the Reimer-Tiemann reaction.

24 Easy

24 of 110

Remembering +4 | -1

DDT is obtained by the reaction of chlorobenzene with

View answer and explanation

Correct option: A

Chloral

Option A (Chloral) is correct because DDT is synthesized by reacting chlorobenzene with chloral in the presence of concentrated sulfuric acid.

25 Medium

25 of 110

Remembering +4 | -1

Alkali metals readily dissolve in liquid ammonia to give blue coloured solutions. The blue colour is believed to be due to

View answer and explanation

Correct option: C

ammoniated electrons

The correct answer is ammoniated electrons because the blue color in alkali metal-ammonia solutions arises from solvated electrons.

26 Easy

26 of 110

Analyzing +4 | -1

Which of the following will have the maximum dipole moment?

View answer and explanation

Correct option: B

{CH}_3 {Cl}

Option B (

{CH}_3 {Cl}

) is correct because dipole moment depends on both electronegativity difference and bond length, and the C-Cl bond provides the optimal balance between these factors.

27 Medium

27 of 110

Remembering +4 | -1

Methyl ketone is identified by

View answer and explanation

Correct option: A

Iodoform test

Option A (Iodoform test) is correct because methyl ketones give a positive iodoform test, producing a yellow precipitate of iodoform (

CHI_3

28 Medium

28 of 110

Analyzing +4 | -1

{\mathrm{C}_6}{\mathrm{H}_5}\mathrm{Cl}

on treating with

\mathrm{NaOH}

300^\circ C

gives phenol. However the yield is poor because of side reaction producing:

View answer and explanation

Correct option: C

{\mathrm{C}_6}{\mathrm{H}_5}\mathrm{O}{\mathrm{C}_6}{\mathrm{H}_5}

Option C (

{\mathrm{C}_6}{\mathrm{H}_5}\mathrm{O}{\mathrm{C}_6}{\mathrm{H}_5}

) is correct because diphenyl ether is formed as a side product due to the reaction of phenoxide ion with chlorobenzene.

29 Easy

29 of 110

Understanding +4 | -1

Which of the following does not answer iodoform test?

View answer and explanation

Correct option: A

N-butyl alcohol

Option A (N-butyl alcohol) does not answer the iodoform test because it does not contain a

CH_3CO-

group or a

CH_3CH(OH)-

group.

30 Hard

30 of 110

Analyzing +4 | -1

Examine the following statements regarding the dehydrohalogenation of alkyl halides in the synthesis of alkenes

(A) Alcoholic

\mathrm{KOH}

is used for dehydrohalogenation.

(B) Rate of dehydrohalogenation for halogens: Iodide

>

Bromide

>

Chloride.

(C) Rate of dehydrohalogenation of alkyl halides: Primary

>

Secondary

>

Tertiary.

Identify the incorrect statement(s)

View answer and explanation

Correct option: D

Option D ((C) only) is correct because the rate of dehydrohalogenation of alkyl halides follows the order: Tertiary > Secondary > Primary.

Revision notes and key takeaways

Review HALOALKANES AND HALO ARENES in your textbook or class notes, then use this set to check your understanding.

Key Takeaways

✓ This set contains 110 single-correct-answer MCQs on HALOALKANES AND HALO ARENES.
✓ Try each question before opening its answer. Read the explanation where one is available.
✓ Sign in to save submitted answers. Revisit incorrect answers alongside your textbook or class notes.

Showing 1-30 of 110 questions

Continue Your Practice

📚 Switch Set (ALL)

Chapter Sets

ALL 110 MCQs EASY 36 MCQs HARD 29 MCQs MEDIUM 45 MCQs

0 /110

0✓ 0✗

0% Accuracy