Top 75 Most Repeated Chemistry Questions in NEET with Answers (PYQ Based)

NEET UG 2027 – Top 75 Most Repeated Chemistry Questions: Download PDF

Top 75 Chemistry questions in PDF are a good resource for fast revision with concepts which keep coming in Physical, Organic and Inorganic chemistry. Aspirants may refer to the PDF after finishing respective NCERT topics and PYQs.

Top 75 Most Repeated Chemistry Questions in NEET

Top Chemistry Questions Repeated in NEET - Sample Questions

Q1.

Match List I with List II.

List I
A. Haber process
B. Wacker oxidation
C. Wilkinson catalyst
D. Ziegler catalyst

List II
I. Fe catalyst
II. $PdCl_2$
III. $[(PPh_3)_3RhCl]$
IV. $TiCl_4$ with $Al(CH_3)_3$

Choose the correct answer from the options given below:

A–I, B–IV, C–III, D–II
A–I, B–II, C–IV, D–III
A–II, B–III, C–I, D–IV
A–I, B–II, C–III, D–IV

Correct Answer: 4

Explanation:
Haber process uses Fe catalyst.
Wacker oxidation uses $PdCl_2$.
Wilkinson catalyst is $[(PPh_3)_3RhCl]$.
Ziegler–Natta catalyst uses $TiCl_4$ with $Al(CH_3)_3$.

Q2.

Which of the following complexes are paramagnetic?

(a) $[NiCl_4]^{2-}$
(b) $Ni(CO)_4$
(c) $[Ni(CN)_4]^{2-}$
(d) $[Ni(H_2O)_6]^{2+}$
(e) $Ni(PPh_3)_4$

Options:
(a), (d) and (e)
(a) and (c)
(b) and (e)
(a) and (d)

Correct Answer: 4

Explanation:
$[NiCl_4]^{2-}$ is tetrahedral and high spin → paramagnetic.
$[Ni(H_2O)_6]^{2+}$ is octahedral and high spin → paramagnetic.
Other complexes are low spin or have paired electrons.

Q3.

The correct order of wavelength of light absorbed by the following complexes is:

A. $[Co(NH_3)_6]^{3+}$
B. $[Co(CN)_6]^{3-}$
C. $[Cu(H_2O)_4]^{2+}$
D. $[Ti(H_2O)_6]^{3+}$

Options:
C < A < D < B
B < D < A < C
B < A < D < C
C < D < A < B

Correct Answer: 3

Explanation:
Stronger ligand field → larger $\Delta$ → smaller wavelength.
Ligand strength order: $CN^- > NH_3 > H_2O$

Thus, wavelength order:
$[Co(CN)_6]^{3-} < [Co(NH_3)_6]^{3+} < [Ti(H_2O)_6]^{3+} < [Cu(H_2O)_4]^{2+}$

Q4.

Given below are two statements:

Statement I: $[Co(NH_3)_6]^{3+}$ is a homoleptic complex whereas $[Co(NH_3)_4Cl_2]^+$ is a heteroleptic complex.

Statement II: $[Co(NH_3)_6]^{3+}$ has only one kind of ligand while $[Co(NH_3)_4Cl_2]^+$ has more than one kind of ligand.

Choose the correct option:

Both Statement I and Statement II are true
Both Statement I and Statement II are false
Statement I is true but Statement II is false
Statement I is false but Statement II is true

Correct Answer: 1

Explanation:
Homoleptic complexes contain only one type of ligand.
Heteroleptic complexes contain more than one type of ligand.

Q5

Which of the following complexes will exhibit maximum attraction towards an applied magnetic field?

Options:
$[Zn(H_2O)_6]^{2+}$
$[Ni(H_2O)_6]^{2+}$
$[Co(en)_3]^{3+}$
$[Co(H_2O)_6]^{2+}$

Correct Answer: 4

Explanation:
$[Co(H_2O)_6]^{2+}$ is a high-spin $d^7$ complex with three unpaired electrons, giving maximum paramagnetism.

Q6.

The correct IUPAC name of the given complex is:

Options:
diaquasilver(II) dicyanidoargentate(II)
dicyanidosilver(I) diaquaargentate(I)
diaquasilver(I) dicyanidoargentate(I)
dicyanidosilver(II) diaquaargentate(II)

Correct Answer: 3

Explanation:
Oxidation state of silver is $+1$.
Cation is named first followed by anion.
Correct name is diaquasilver(I) dicyanidoargentate(I).

NEET Chemistry 2021–2026: What Do the Trends Show?

The analysis of the last six papers of the NEET Chemistry exam reveals that the pattern of distribution of questions keeps varying each year, although some topics have been consistently scoring high in terms of weightage.

Coordination Compounds and Hydrocarbons are high-scoring chapters, whereas Organic Chemistry: Some Basic Principles and Techniques, Chemical Bonding, Structure of Atom, Thermodynamics and Solutions have also been consistently contributing towards the exam score.

However, the NEET 2026 exam also included topics such as Coordination Compounds, Hydrocarbons, Organic Chemistry basics, Chemical Kinetics, Equilibrium and d- and f-Block Elements, which could guide the candidates for NEET 2027.

High-Priority Chemistry Areas for NEET 2027

• Coordination Compounds
• Hydrocarbons
• Organic Chemistry: Some Basic Principles and Techniques
• Chemical Bonding and Molecular Structure
• Structure of Atom
• Thermodynamics
• Solutions
• Alcohols, Phenols and Ethers
• Classification of Elements and Periodicity
• Haloalkanes and Haloarenes
• Chemical Kinetics
• Equilibrium
• d- and f-Block Elements

How These Top 75 Chemistry Questions Are Selected for NEET 2027

These Top 75 Chemistry questions are selected after analysing previous years’ NEET question papers and identifying concepts that are repeatedly tested. The focus is on high-weightage chapters, commonly asked formulas, reactions, and question patterns. Each question is chosen to represent concepts that appear in different forms across multiple NEET exams.

High-Weightage Chapters in NEET Chemistry

Knowing the NEET Chemistry high-weightage chapters helps aspirants prioritise important topics. It also helps in better preparation based on trends from the last five years’ question papers.

Why Should You Practise the Most Repeated Chemistry Questions for NEET 2027?

The commonly asked Chemistry questions for NEET 2027 provide an excellent way to revise concepts which have always featured in exams. While the same questions might not appear again, the concept/formula/reaction or the application-oriented problem is likely to come up in some other form. Practising these questions will help develop a better understanding of the concepts as well as point out areas that need revision.

Some of the benefits are:

• Prepares you for high-weightage Chemistry sections.
• Improves your speed and accuracy through constant practice.
• Develops a clear understanding of Physical, Organic, and Inorganic Chemistry.
• Acquaints you with the difficulty level of NEET questions.
• Identifies your weaknesses before taking any mock tests.
• Boosts your confidence through selective revision.

Strategies to Score High in NEET Chemistry 2027

Doing these repeated questions alone will not suffice. The correct method of revision will ensure that you gain maximum marks in Chemistry. In addition to NCERT revision, chapter-wise MCQs, and mock tests, these repeated questions will be of immense use to your preparation.

This method is as follows:

• Study the NCERT chapter first before solving its repeated questions.
• Analyse each wrong answer and immediately revise the concept concerned.
• Note down the NEET chemistry formulas, named reactions, exceptions, and commonly asked facts from the NEET chemistry syllabus.
• Regularly revise high-weightage chapters rather than equal chapters.
• Do previous year chapter-wise questions prior to doing full-length papers.
• Always focus on your weaknesses and do mock tests once a week.
  Go through your error book properly before the exam.