Blog Log in Get Started Free

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

Chapter Language Difficulty Show only questions I answered incorrectly Register free to filter questions

● ● ● ● ●

According to Gallis, Hanny and Smith 50% ionic character and 50% covalent character in a molecule is related to :-

EN = 1.6 - 2.2

EN =1.7 - 2.2

EN =0.8 - 1.1

EN =0 - 1.6

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

Explanation

According to Gallis EN = 1.7

According to Henry and Smith EN = 2.1

● ● ● ● ●

In scandium series, maximum distance between neutrons containing site and valence shell is of :-

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

Explanation

in 3d series, Sc has maximum radius.

● ● ● ● ●

Which of the following compound is isoelectronic with adduct of "Diborane and Ammonia" is :-

Hydrogen peroxide

Diborane (at absolute zero temp.)

First member of alkyne series

Diborance (at 10 $°$ C temp)

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

Explanation

H₃N $\to$ B2H6 contain 18 electron

H₂O₂= 18 electron

● ● ● ● ●

Which of the following ionisation energy order is NOT correct :-

Cu⁺ > Cu⁺²

Mn⁺² > Mn⁺³

N^-3 > N

All of the above

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

Explanation

IE ∝ O.S.

● ● ● ● ●

Which of the following would not proceed in the forward direction spontaneously?

${Si}^{+} + Cl \to Si + {Cl}^{+}$

$F + I^{-} \to F^{-} + I$

both

none

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

Explanation

IP of Cl>IP of Si.

● ● ● ● ●

Increasing order of the ionic radii and decreasing order of number of protons of the given isoelectronic species is :-

Ca⁺², K⁺, Cl^-, S^-2

Cl^-, Ca⁺², K⁺, S^-2

S^-2, Cl^-, Ca⁺², k⁺

None of the above

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

Explanation

for ISOELECTRONIC species, atomic size is 1/number of proton

● ● ● ● ●

In which of the following has maximum EN :-

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

Explanation

EN increase from left to right in P.T

● ● ● ● ●

According to Gallis, Hanny and Smith, 50% covalent character in a molecule is related to:-

$∆$ EN=1.6-2.2

$∆$ DEN=1.7-2.2

$∆$ EN=0.8-1.1

$∆$ EN=0-1.6

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

Explanation

Maximum IP $\to$ Noble gas

Max.EA $\to$ halongens

EN of Cl=3

EN of Br=2.8

en of I=2.5

● ● ● ● ●

Allred Rochow scale is related to:-

Electronegativity, radius and Z*

resonance energy of molecule, Ionisation potential and electron affinity

Bond polarity, diagonal relationship and periodicity

None of the above

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

Explanation

According to Gallis $∆ EN$ =1.7

According to Henny and Smith $∆ EN$ =2.1

● ● ● ● ●

Electronic configuration of Palladium is :-

[Rn] 5f³ 6d¹ 7s²

[Rn] 5f⁵ 6d¹ 7s²

[Rn] 5f²6d¹ 7s²

None of the above

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

Explanation

Pd₄₆ = [Kr]₃₆ 4d¹⁰

Ready to ace NEET?

Free access · No credit card required

Browse All Questions Create Free Account

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.