Top 20 Most Important NEET Chemistry Questions: Download PDF

Download Top 20 Most Important NEET Chemistry Questions PDF

Get the NEET 2027 Chemistry important questions PDF with the most scoring NEET concepts and problems from Physical, Organic, and Inorganic Chemistry. This compact resource includes solved PYQs, formula‑based numericals, and conceptual MCQs for quick revision. Download the PDF to strengthen last-minute preparation and boost your Chemistry score.
Download Here - NEET Chemistry Top 20 Important Questions PDF

Important NEET Chemistry Questions with Answers 2027

The following NEET Chemistry Questions are chosen from topics and types of questions which candidates need to practice for NEET 2027. The questions comprise Physical Chemistry numericals, Organic Chemistry reaction-based questions and Inorganic Chemistry concepts. Each question is followed by its topic and level, along with the answer and explanation.

The candidate should attempt each question without looking at the solution. Aspirants should then compare their answer with the correct one and revise the corresponding NCERT topic if wrong.

Ques:

Given below are two statements :

Statement I : A hypothetical diatomic molecule with bond order zero is quite stable. Statement II : As bond order increases, the bond length increases.

In the light of the above statements, choose the most appropriate answer from the options given below :

Option 1) Statement 1 is false but Statement II is true

Option 2) Both Statement I and Statement II are true

Option 3) Both Statement I and Statement II are false

Option 4) Statement 1 is true but Statement II is false

Chapter - Chemical bonding and molecular structure

Difficulty level - Easy

Solution -

A bond order of zero means no net bonding between the atoms, indicating the molecule cannot exist or is highly unstable. so the first statement is false

As bond order increases, bond length decreases because stronger bonding pulls the atoms closer together. and also the second statement is false

So the correct answer is (3) Both Statement I and Statement II are false

Hence, the correct answer is option (3).

Ques:

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) :

undergoes SN2 reaction faster than

Reason ( RR ) : lodine is a better leaving group because of its large size.
In the light of the above statements, choose the correct answer from the options given below :

Option 1) A is false but R is true

Option 2) Both A and R are true and R is the correct explanation of A

Option 3) Both A and R are true but R is not the correct explanation of A

Option 4) A is true but R is false

Chapter - Haloalkanes and Haloarenes

Difficulty level - Medium

Solution -

Rate α [RX][Z^-]

where Z^- is the leaving group

Since iodide is a better leaving group than chloride so the SN² reaction will be faster in iodobutane.

The larger size of iodine results in a weaker bond between iodine and the carbon atom it's attached to that makes it easier to dissociate and leave during a reaction.

Hence, the correct answer is option (2).

Ques:

C( s)+2H₂( g)→CH₄( g);ΔH=−74.8 kJ mol−1
Which of the following diagrams gives an accurate representation of the above reaction? [R→ reactants; P→ products ]

Option 1)

Option 2)

Option 3)

Option 4)

Chapter - Thermodynamics

Difficulty Level - Medium

Solution - Diagram 2:

- R is higher than P

- P is lower in energy

- The arrow from P to R is labeled 74.8 and points upward

- This is correct because it represents the energy difference, and ΔH=−74.8kJmol⁻¹.

The arrow shows that products are lower by 74.8kJmol⁻¹.

- It is common to show the magnitude of ΔH with an upward arrow between P and R even in exothermic reactions, as long as positions are correct.

Hence, the correct answer is option (2).

Important NEET Questions Chemistry 2027: Weightage Analysis

The NEET Chemistry 2027 has all three parts, which are Physical, Organic, and Inorganic Chemistry from Class 11 and Class 12. The table below shows NEET Chemistry chapter-wise weightage for the last 6 years. Aspirants will also get to know the difficulty level of important NEET chemistry questions.

Tips to Solve Chemistry Questions Quickly in NEET 2027

To perform well in NEET Chemistry and score well, use these tried and tested techniques:

• Be well-versed with the syllabus, particularly Physical, Organic, and Inorganic Chemistry.
• Be clear on the basics and concepts, particularly in organic chemistry.
• Refer primarily to the NCERT, revising each chapter intensively.
• Practice NEET chemistry MCQs for a clear concept grip.
• Practice previous years' question papers and mock tests on a regular basis to develop speed and accuracy.
• Give additional time to weaker sections for improvement.
• Have a NEET Chemistry formula sheet for instant revision.
• Use mnemonics to improve retention in Organic and Inorganic Chemistry.
• Resolve doubts immediately through teachers, friends, or mentors.
• Reserve specific time for constant revision, especially of weak points.
• In the examination, try easier questions first to conserve time and gain confidence.
• Don't make wild guesses to minimise negative marking in the NEET exam.