Solid state - NEET Previous Year Questions with Solutions and Weightage

Solid state is a moderate-weightage topic in NEET contributing 4-5 % in the Chemistry section. In the last 5 years, 2-3 questions on average were asked every year from this topic covering Unit Cell and Packing Efficiency.

The packing efficiency of a unit cell refers to how much of the cell is occupied by atoms. Because packing spheres even without any space between them is impossible, the percentage should be less than 100%. As a result, packing efficiency is equal to the packing factor times 100.

Also Read:

NEET Study Notes for State of Matter

NEET Study Notes on Basic Concepts of Chemistry

NEET Study Notes on Chemical Bonding

NEET Study Notes on Solid State

Listed below is the list of Solid state -Unit Cell and Packing Efficiency questions with detailed solutions asked in NEET UG 2025 exam.

Question 1:

What fraction of one edge centred octahedral void lies in one unit cell of fcc?

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Question 2:

Copper crystallises in fcc unit cell with cell edge length of 3.608 x 10-8 cm. The density of copper is 8.92 g cm-3. Calculate the atomic mass of copper

• 63.1 u
• 31.55 u
• 60 u
• 65 u

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Question 3:

An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The atomic radiusis:

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Question 4:

A compound is formed by cation C and anion A. The anions form hexagonal close packed (hep) lattice and the cations occupy 75% of octahedral voids. The formula of the compound is :

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Question 5:

• 0.96
• 0.04
• 0.5
• 0.31

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Question 6:

If a is the length of the side of a cube , the distance between the body centred atom and one corner atom in the cube will be

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Question 7:

The correct option for the number of body centred unit cells in all

14 types of Bravais lattice unit cells is :

• 7
• 5
• 2
• 3

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Question 8:

Right option for the number of tetrahedral and octahedral voids in hexagonal primitive unit cell are:

• 8,4
• 6,12
• 2,1
• 12,6

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NEET Chemistry Exam Pattern 2024: Marking Scheme

Candidates will get 4 marks for every correct answer. 1 mark will be deducted for every incorrect answer. No mark will be rewarded for unattempted questions. Candidates are advised not to fill in more than one option in the OMR sheet. If they do so then that question will be considered incorrect and you will get negative marks.

Important Topics for NEET Chemistry

NEET chemistry syllabus can be divided into 3 parts i.e Organic, Inorganic, and Physical Chemistry. The weightage of questions asked from each section is almost the same every year.

• NEET Physical Chemistry: It’s the numerical section of NEET Chemistry.
• NEET Organic Chemistry: From this section, you must focus on memorizing the names of various compounds that constitute reagents, subtracts, etc.
• NEET Inorganic Chemistry: This section is considered the easiest section of NEET Chemistry.

NEET Chemistry Exam Pattern 2024: Chapter wise weightage

Based on the questions asked in previous years we have tabulated the weightage of sections or topics given to class XII and XII:

NEET 2024 Question Paper PDF Code R

NEET 2024 Question Paper PDF Code Q

NEET 2024 Question Paper PDF Code T

NEET 2024 Question Paper PDF Code S

NEET Re-Exam June 23 Question Paper

NEET Subject Wise Question Paper 2024 PDF with Answer Key and Solution

NEET Sample Paper 2024 PDF Download with Answer

Students must not confuse this sample paper with the actual question paper. This is just a mock paper with answers that will help you with your exam preparation.

NEET 2025: Previous Year Question Papers

Given below are the year-wise question paper for NEET examination:

Frequently Asked Questions:

Is solid state removed from NEET?

No, the chapter "Solid State" has not been removed from the NEET Chemistry syllabus for 2025, as per the revised syllabus released by the National Testing Agency (NTA).

Which is the hardest chapter in the NEET exam ?

Based on NEET exam analysis and student feedback, Chemistry is often considered the most difficult subject, with specific chapters like Chemical Bonding, Inorganic Chemistry, and Hydrocarbons posing significant challenges.

Is solid state important for NEET?

Yes, the "Solid State" chapter is important for NEET, especially for chemistry, as it's a foundational topic that can yield good marks and is relatively easy to understand and score well in.

NEET Paper Analysis 2022 Chemistry:

• Maximum questions were based on the facts and figures given in NCERT books.
• There were 11 numerical-type questions but those too were based on basic concepts and theories.
• There were a few assertion-reasoning questions in Section A of the NEET chemistry paper.