Blog Log in Get Started Free

NEET Practice Questions (MCQs) with Answers & Solutions

Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

All Physics Chemistry Botany Zoology

● ● ● ● ●

Which statement is correct ?

C₂H₅Br reacts with alcoholic KOH to form C₂H₅OH

C₂H₅Br when treated with metallic sodium gives ethane

C₂H₅Br when treated with sodium ethoxide forms diethyl ether

C₂H₅Br with AgCN forms ethyl cyanide

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

(c) $C_{2} H_{5} Br + C_{2} H_{5} ONa \overset{}{\to} C_{2} H_{5} {OC}_{2} H_{5}$ ; also in (a) C₂H₄ is formed, in (b) C₄H₁₀ is formed, in (d) C₂H₅NC is formed

● ● ● ● ●

Ethylidine dichloride (CH3CHCl2) can be prepared by the addition of hydrogen chloride on:

C₂H₆

C₂H₄

C₂H₂

all of these

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

● ● ● ● ●

The reactivity order of alkyl halides depends upon:

nature of alkyl group only

nature of halogen atom only

nature of both alkyl group and halogen atom

none of the above

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

(c) R-I > R-Br > R-CI > R-F; reactivity order due to halogen atom. $3 ° > 2 ° > 1 °$ ; reactivity order due to alkyl group.

● ● ● ● ●

The given reaction is an example of,

C2H5Br + KCNaq â†’ C2H5CN +â€‰KBr

elimination

nucleophilic substitution

electrophilic substitution

redox change

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

(b) Br is replaced by a nucleophile CN^-.

● ● ● ● ●

In the following sequences of reactions;

CH₃CH₂CH₂Br â†’-HBrKOH(alc.)(A)â†’HBr(B)â†’KOH(aq)(C)

the product (C) is:

propene

propyne

propan-1-ol

propan-2-ol

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

(d) CH₃CH₂CH₂Br â†’-HBrKOH(alc.)CH₃CH=CH₂â†’HBrCH₃CHBrCH₃â†’KOH(aq)CH₃CHOHCH₃

● ● ● ● ●

Westrosol is:-

acetylene tetrachloride

acetylene dichloride

trichloroehyne

1,1,2-trichloroethene

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

Westrosol is the trade name for 1,1,2-trichloroethene, which is a chlorinated hydrocarbon used as a solvent and a precursor for various chemical syntheses. Its chemical formula is CHCl=CCl2, and it is also known as trichloroethylene or TCE.

● ● ● ● ●

Reagent not used to prepare an alkyl halide from an alcohol is:

HCl+ ZnCl₂

NaCl

PCl₅

SOCl₂

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

(b) Rest all replace -OH by -Cl.

● ● ● ● ●

Most readily hydrolysed halide is:-

C₆H₅Cl

(C₆H₅)₂CHCl

C₆H₅CH₂Cl

(C₆H₅)₃CCl

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

(d) Tertiary carbonium is most stable.

● ● ● ● ●

CCl₄ is insoluble in water because:-

water is non-polar

CCl₄ is non-polar

water and CCl₄ are polar

none of the above

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

(b) CCl₄ is non-polar;H₂O is polar.

● ● ● ● ●

PCI₅ reacts with propanone, to give:

gem dichloride

vic dichloride

propanal

propane chloride

You've reached today's free limit of 20 questions. Log in to keep practising for free.

Explanation

(a) CH₃COCH₃ + PCl₅ →CH₃CCl₂CH₃ + POCl₃

Ready to ace NEET?

Free access · No credit card required

Browse All Questions Create Free Account

Frequently Asked Questions

Yes. You can attempt every NEET question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.

No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.

The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.