Chemistry MCQs for NEET — Practice Questions with Answers

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

All Physics Chemistry Botany Zoology
Language English हिंदी
Register free for difficulty & keyword filters
● ● ● ● ●

Picric acid and benzoic acid can be distinguished by:

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

Picric acid has phenolic gp.

● ● ● ● ●

Butan-2-ol is:

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

(b) It contains >CHOH gp.

● ● ● ● ●

CH3CH2Cl→NaCNX →Ni/H2Y→Acetic anhydrideZ

In the above reaction sequence, Z is

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

(a) CH3CH2Cl→NaCNCH3-CH2-CN →Ni/H2 CH3-CH2CH2NH2→anhydrideacetic                                                                                   X                                      Y                       CH3-CH2-CH2-NHCOCH3

                                                                                                                         Z

               

● ● ● ● ●

The commonly used dehydrating agent in the preparation of an ester is :

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

(d) H2SO4 acts as catalyst as well as dehydrating agent for the reaction,

        CH3COOH+HOC2H5→H2SO4CH3COOC2H5

● ● ● ● ●

Oxidation of ally alcohol, (CH2=CH-CH2OH) gives a mixture of oxalic acid and formic acid. If this oxidation is done in presence of bromine. One would expect only:

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

(d) Only CH2OH gp. is oxidized to -COOH; Double bond is not affected.

● ● ● ● ●

Consider the following reaction, 

Ethanol →PBr3X→Alc.KOHY→(ii)H2O, heat(i) H2SO4, room temperatureZ

The product Z is

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

(d) C2H5OH(Ethanol)→PBr3C2H5Br β- elimination→-K Br    -H2O  Alc. KOHCH2=CH2→H2SO4CH3-CH2OSO3H

    

→-H2SO4  H2O /∆CH3CH2OH

                   Ethanol

● ● ● ● ●

Which of the following are known as mercaptans?

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

R-SH are thiols or mercaptans

● ● ● ● ●

Identity Z in the sequence of reactions,

CH3CH2CH=CH2→HBr2/H2O2Y →C2H5ONaZ

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

(a) CH3CH2CH=CH2→Anti-Markownikoff's ruleHBr2/H2O2 CH3CH2CH2CH2Br→ Bromo-butanane (1° product)  CH3CH2CH2CH2Br→SN2 reaction         ( Williamson's synthesis)C2H5ONaCH3CH2CH2CH2OC2H5  

                                                                              Ethoxy - butane

● ● ● ● ●

Salol is used as:

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

(a) Salol is phenyl salicylate and is used as antiseptic

● ● ● ● ●

Ethyl propanoate on reduction with LiAlH4 yields:

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

(b) C2H5COOC2H5→LiAlH4C2H5CH2OH + C2H5OH

Ready to ace NEET?

Free access · No credit card required

Frequently Asked Questions

Yes. You can attempt every Chemistry 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.