Meta DescriptionNEET 2027 Part 62 presents NCERT-focused practice questions from Physics, Chemistry and Biology, covering Atoms, Amines, and Biodiversity and Conservation. Includes MCQs, quick revision, active recall, concept connections, error analysis, smart revision strategy and a seven-step study cycle.SEO KeywordsNEET 2027, NEET Preparation, NEET MCQs, NCERT, Atoms, Bohr Model, Hydrogen Spectrum, Amines, Organic Chemistry, Biodiversity and Conservation, Biology MCQ, Physics MCQ, Chemistry MCQ, NEET Revision, NCERT Biology, NCERT ChemistryHashtags#NEET2027 #NEETPreparation #NEETMCQ #NCERT #Physics #Chemistry #Biology #NEETAspirants #NEETRevision #NEETPractice #Atoms #BohrModel #Amines #Biodiversity #Conservation

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NEET 2027 Possible Questions Series — Part 62

English Edition

Physics • Chemistry • Biology

NCERT Focus • Concept Building • MCQ Practice • Active Recall • Error Analysis

Meta Description

NEET 2027 Part 62 presents NCERT-focused practice questions from Physics, Chemistry and Biology, covering Atoms, Amines, and Biodiversity and Conservation. Includes MCQs, quick revision, active recall, concept connections, error analysis, smart revision strategy and a seven-step study cycle.

SEO Keywords

NEET 2027, NEET Preparation, NEET MCQs, NCERT, Atoms, Bohr Model, Hydrogen Spectrum, Amines, Organic Chemistry, Biodiversity and Conservation, Biology MCQ, Physics MCQ, Chemistry MCQ, NEET Revision, NCERT Biology, NCERT Chemistry

Hashtags

#NEET2027 #NEETPreparation #NEETMCQ #NCERT #Physics #Chemistry #Biology #NEETAspirants #NEETRevision #NEETPractice #Atoms #BohrModel #Amines #Biodiversity #Conservation

INTRODUCTION

NEET preparation becomes more effective when every chapter is studied through a combination of conceptual understanding, active recall, question practice, revision and error analysis.

The preparation chain remains:

Concept → Recall → Question → Analysis → Revision → Retention

Part 62 focuses on:

Physics — Atoms

Chemistry — Amines

Biology — Biodiversity and Conservation

These questions are designed as practice material based on important concepts and NCERT-oriented preparation. They are not predictions of the exact NEET 2027 paper.

The goal is to help you:

Understand important concepts

Recall formulas and facts

Practise MCQs

Identify weak areas

Correct repeated mistakes

Improve retention

Build confidence through consistent practice

Preparation Cycle

Read → Understand → Recall → Practise → Analyse → Revise → Retest

PHYSICS

Atoms

The chapter Atoms introduces important ideas about atomic structure, Bohr's model and the hydrogen spectrum.

For NEET preparation, focus on the relationship between energy levels, electronic transitions, photons and spectral lines.

MCQ 1

According to Bohr's model, electrons in an atom revolve only in certain:

A. Random orbits

B. Stable permitted orbits

C. Spiral paths

D. Straight-line paths

Answer: B. Stable permitted orbits

MCQ 2

According to Bohr's model, the angular momentum of an electron in a permitted orbit is:

A. nh

B. \frac{nh}{2\pi}

C. \frac{h}{n}

D. 2\pi nh

Answer: B. \frac{nh}{2\pi}

MCQ 3

When an electron jumps from a higher energy level to a lower energy level, it:

A. Absorbs a photon

B. Emits a photon

C. Absorbs a neutron

D. Emits an electron

Answer: B. Emits a photon

MCQ 4

The energy of a photon associated with a spectral transition is:

A. E=mc

B. E=h\nu

C. E=mv

D. E=ma

Answer: B. E=h\nu

MCQ 5

The radius of the first Bohr orbit of hydrogen is known as:

A. Nuclear radius

B. Bohr radius

C. Classical radius

D. Atomic mass radius

Answer: B. Bohr radius

MCQ 6

The energy of an electron in the ground state of hydrogen atom is approximately:

A. -13.6 eV

B. +13.6 eV

C. -1.36 eV

D. +1.36 eV

Answer: A. -13.6 eV

MCQ 7

When an electron in a hydrogen atom moves from n=2 to n=1, the atom:

A. Absorbs energy

B. Emits energy

C. Remains unchanged

D. Loses its nucleus

Answer: B. Emits energy

MCQ 8

The hydrogen spectrum is produced due to:

A. Nuclear reactions

B. Transitions of electrons between energy levels

C. Motion of protons only

D. Motion of neutrons only

Answer: B. Transitions of electrons between energy levels

Physics Quick Revision

Remember:

Bohr proposed specific permitted orbits.

Electrons in stationary states do not continuously radiate energy.

Angular momentum:

[ mvr=\frac{nh}{2\pi} ]

Photon energy:

[ E=h\nu ]

Electron moving from higher to lower level → emission

Electron moving from lower to higher level → absorption

Ground state of hydrogen → n=1

Ground-state energy of hydrogen → approximately -13.6 eV

Hydrogen spectrum results from electronic transitions.

Important Concept

Higher Energy Level → Lower Energy Level → Photon Emission → Spectral Line

And:

Lower Energy Level → Higher Energy Level → Photon Absorption

CHEMISTRY

Amines

Amines are nitrogen-containing organic compounds derived conceptually from ammonia by replacement of one or more hydrogen atoms by alkyl or aryl groups.

For NEET preparation, focus on classification, nomenclature, basicity, preparation and important reactions.

MCQ 1

The functional group characteristic of primary amines is:

A. –OH

B. –NH₂

C. –COOH

D. –CHO

Answer: B. –NH₂

MCQ 2

Which of the following is a primary amine?

A. CH₃NH₂

B. (CH₃)₂NH

C. (CH₃)₃N

D. CH₃CONH₂

Answer: A. CH₃NH₂

MCQ 3

Amines are derivatives of:

A. Methane

B. Ammonia

C. Water

D. Carbon dioxide

Answer: B. Ammonia

MCQ 4

The functional group in a secondary amine can be represented as:

A. –NH₂

B. –NHR

C. –NR₂

D. –NO₂

Answer: B. –NHR

MCQ 5

Amines generally show basic character because nitrogen has:

A. No electrons

B. A lone pair of electrons

C. Only protons

D. A positive charge only

Answer: B. A lone pair of electrons

MCQ 6

Aniline has the formula:

A. C₆H₅NH₂

B. C₆H₅OH

C. C₆H₆

D. C₆H₅COOH

Answer: A. C₆H₅NH₂

MCQ 7

Primary aromatic amines can undergo diazotisation under suitable conditions to form:

A. Diazonium salts

B. Alcohols only

C. Ethers only

D. Alkenes only

Answer: A. Diazonium salts

MCQ 8

The reaction of an amine with an acid generally produces:

A. Salt

B. Alkene

C. Ether

D. Aldehyde

Answer: A. Salt

Chemistry Quick Revision

Remember:

Amines are nitrogen-containing organic compounds.

Primary amine → RNH_2

Secondary amine → R_2NH

Tertiary amine → R_3N

Aniline → C_6H_5NH_2

Amines generally show basic character due to the lone pair on nitrogen.

Amines react with acids to form salts.

Primary aromatic amines can undergo diazotisation under suitable conditions.

Important preparation and reaction pathways should be revised from NCERT.

Concept Connection

Structure → Lone Pair → Basicity → Reaction with Acid → Salt

For aromatic amines:

Aniline → Diazotisation → Diazonium Salt → Further Reactions

BIOLOGY

Biodiversity and Conservation

Biodiversity refers to the variety and variability of life at different levels.

For NEET, this topic is important because it connects species diversity, ecological diversity, threats to biodiversity and conservation strategies.

MCQ 1

Biodiversity refers to:

A. Only the number of animals

B. Variety and variability of living organisms

C. Only plant species

D. Only microorganisms

Answer: B. Variety and variability of living organisms

MCQ 2

Biodiversity can be studied at:

A. Only species level

B. Genetic, species and ecosystem levels

C. Only ecosystem level

D. Only genetic level

Answer: B. Genetic, species and ecosystem levels

MCQ 3

The term “species diversity” refers primarily to:

A. Variety of species in a region

B. Number of chromosomes in one organism

C. Size of an ecosystem

D. Amount of rainfall

Answer: A. Variety of species in a region

MCQ 4

Which of the following is a major threat to biodiversity?

A. Habitat loss

B. Photosynthesis

C. Pollination

D. Seed germination

Answer: A. Habitat loss

MCQ 5

Ex-situ conservation means conservation:

A. Within the natural habitat

B. Outside the natural habitat

C. Only in oceans

D. Only in forests

Answer: B. Outside the natural habitat

MCQ 6

Which of the following is an example of ex-situ conservation?

A. National park

B. Wildlife sanctuary

C. Botanical garden

D. Biosphere reserve

Answer: C. Botanical garden

MCQ 7

Which of the following represents in-situ conservation?

A. Zoo

B. Botanical garden

C. Seed bank

D. National park

Answer: D. National park

MCQ 8

The Red Data Book is associated with information about:

A. Only crop production

B. Threatened species

C. Weather conditions

D. Soil fertility

Answer: B. Threatened species

Biology Quick Revision

Remember:

Biodiversity = variety and variability of life

Major levels → Genetic, Species, Ecosystem

Species diversity → variety of species

Habitat loss → major threat

Over-exploitation → biodiversity threat

Alien species invasion → can threaten native species

Co-extinction → loss of one species may affect another dependent species

In-situ conservation → conservation within natural habitat

Ex-situ conservation → conservation outside natural habitat

National parks → example of in-situ conservation

Botanical gardens → example of ex-situ conservation

Red Data Book → information about threatened species

Key Distinction

In-situ → Inside natural habitat

Ex-situ → Outside natural habitat

This simple distinction can help during quick revision.

ACTIVE RECALL

Close your book and answer from memory.

Physics

What are Bohr's permitted orbits?

What is the quantisation condition for angular momentum?

What happens when an electron moves from a higher energy level to a lower level?

What is photon energy?

What is the Bohr radius?

What is the ground-state energy of hydrogen?

What happens during the n=2 to n=1 transition?

Why is the hydrogen spectrum produced?

Chemistry

What is the functional group of a primary amine?

Give an example of a primary amine.

Amines are derivatives of which compound?

What is the structure of a secondary amine?

Why are amines basic?

What is the formula of aniline?

What is diazotisation?

What happens when an amine reacts with an acid?

Biology

What is biodiversity?

At which major levels can biodiversity be studied?

What is species diversity?

Name one major threat to biodiversity.

What is in-situ conservation?

What is ex-situ conservation?

Give an example of ex-situ conservation.

What is the Red Data Book associated with?

Active Recall Rule

Answer from Memory → Check NCERT → Mark Recall Gap → Revise → Retest

If you cannot answer immediately, do not panic.

That question has simply identified a revision gap.

CONCEPT CONNECTION

Physics

Energy Levels → Electronic Transition → Photon → Spectral Line

Chemistry

Nitrogen Lone Pair → Basicity → Proton Acceptance → Salt Formation

Biology

Biodiversity → Threats → Species Loss → Conservation → Ecosystem Stability

When concepts are connected, revision becomes more meaningful than memorising isolated statements.

ERROR ANALYSIS

After solving your MCQs, classify your mistakes.

1. Concept Error

You did not understand the underlying idea.

2. Recall Error

You studied it but could not remember it during the test.

3. Application Error

You knew the concept but could not use it correctly.

4. Formula/Reaction/Fact Error

You remembered an equation, reaction or biological fact incorrectly.

5. Careless Error

You missed a keyword, option or important condition.

Error Log

Use this format:

Question → My Answer → Correct Answer → Why I Was Wrong → Correct Concept → Revision Date

The purpose of an error log is not to collect mistakes.

The purpose is to prevent the same mistake from returning.

SMART REVISION STRATEGY

Physics

Revision order:

Bohr Model → Energy Levels → Angular Momentum → Electronic Transitions → Photon Emission → Hydrogen Spectrum

Focus on:

Bohr postulates

Permitted orbits

Quantisation of angular momentum

Energy levels

Photon emission and absorption

Hydrogen spectrum

Ground-state energy

Important formulas

Memory Chain

Higher Level → Lower Level → Energy Released → Photon Emitted

Lower Level → Higher Level → Energy Absorbed

Chemistry

Revision order:

Amines → Classification → Structure → Lone Pair → Basicity → Preparation → Reactions

Focus on:

Primary, secondary and tertiary amines

Aliphatic and aromatic amines

Nomenclature

Basic character

Aniline

Reaction with acids

Diazotisation

Important NCERT reactions

Memory Chain

Structure → Lone Pair → Basicity → Reaction → Product

Biology

Revision order:

Biodiversity → Levels → Patterns → Importance → Threats → Conservation

Focus on:

Genetic diversity

Species diversity

Ecosystem diversity

Biodiversity patterns

Importance of biodiversity

Habitat loss

Over-exploitation

Alien species invasion

Co-extinction

In-situ conservation

Ex-situ conservation

Memory Chain

Biodiversity → Threat → Species Loss → Conservation

Remember:

Protecting biodiversity means protecting the living systems that support ecological balance.

MOTIVATION

NEET preparation is built through thousands of small decisions.

One page of NCERT.

One formula recalled.

One MCQ solved.

One mistake analysed.

One weak topic revised.

One test taken again.

None of these actions may feel extraordinary by themselves.

But together, they create preparation.

Do not measure your entire journey by one difficult chapter or one low mock-test score.

Instead, ask:

“Am I better than I was yesterday?”

If the answer is even slightly yes, you are moving forward.

When Physics feels difficult, break the concept into smaller pieces.

When Chemistry reactions become confusing, connect:

Structure → Property → Reaction → Product

When Biology facts seem overwhelming, connect them into a chain.

And when you make mistakes, do not turn them into self-doubt.

Turn them into information.

Mistake → Analysis → Correction → Revision → Retest

Your preparation does not need to be perfect.

It needs to be consistent.

Some days will be productive.

Some days will be slower.

Keep the long-term goal in sight.

You are not required to finish everything in one day.

You only need to complete today's next useful step.

One concept understood.

One question solved.

One mistake corrected.

One revision completed.

One step forward.

Keep going. 🌱📚

SEVEN-STEP STUDY CYCLE

1. Read

Read NCERT carefully.

2. Understand

Ask:

Why? How? What happens if the condition changes?

3. Recall

Close the book and reproduce the concept from memory.

4. Practise

Solve MCQs, numericals and application-based questions.

5. Analyse

Find exactly why the answer was wrong.

6. Revise

Return to the relevant NCERT section.

7. Retest

Test the same concept again after an interval.

Complete Formula

Study → Understand → Recall → Practise → Analyse → Revise → Retest

Consistency is more valuable than irregular bursts of study.

IMPORTANT NEET REMINDER

Possible Questions are supplementary practice material.

Your core preparation should remain based on:

Latest Official NEET Syllabus

NCERT

Previous-Year Questions

Regular MCQ Practice

Mock Tests

Revision

Error Analysis

Official examination information

Do not treat prediction material as a substitute for complete preparation.

Use this series as a practice tool:

Test → Recall → Analyse → Revise → Improve

The goal is not to guess the paper.

The goal is to become ready for different question patterns.

DISCLAIMER

This is an independently prepared educational practice resource.

It is not an official NEET 2027 question paper.

No question in this article is guaranteed to appear in NEET 2027.

No one can reliably guarantee the exact questions that will appear in a future examination.

Students should prioritise:

The latest official syllabus

NCERT

Previous-Year Questions

Mock Tests

Regular Revision

Error Analysis

Official examination information

The purpose of this series is educational practice, conceptual reinforcement, active recall, revision, MCQ improvement, error correction and better retention.

Always verify the latest examination information through appropriate official sources.

KEY TAKEAWAYS

Physics — Atoms

Bohr proposed permitted orbits.

Angular momentum is quantised.

mvr=\frac{nh}{2\pi}

Photon energy → E=h\nu

Higher → lower energy level → photon emission

Lower → higher energy level → photon absorption

Hydrogen ground-state energy → approximately -13.6 eV

Hydrogen spectrum results from electronic transitions.

Chemistry — Amines

Amines contain nitrogen.

Primary amine → RNH_2

Secondary amine → R_2NH

Tertiary amine → R_3N

Aniline → C_6H_5NH_2

Lone pair on nitrogen contributes to basic character.

Amines react with acids to form salts.

Primary aromatic amines can undergo diazotisation under suitable conditions.

Biology — Biodiversity and Conservation

Biodiversity = variety and variability of life.

Major levels → Genetic, Species, Ecosystem.

Habitat loss is a major threat.

Over-exploitation can reduce biodiversity.

Alien species invasion can threaten native species.

In-situ → Natural habitat.

Ex-situ → Outside natural habitat.

National parks → In-situ example.

Botanical gardens → Ex-situ example.

Red Data Book → Threatened species information.

FINAL REVISION CHECK

Physics

Energy Level → Transition → Photon → Spectrum

Remember:

[ E=h\nu ]

[ mvr=\frac{nh}{2\pi} ]

Hydrogen ground-state energy:

[ E_1\approx -13.6\text{ eV} ]

Chemistry

Amine → Nitrogen Lone Pair → Basicity → Acid Reaction → Salt

Classification:

Primary → RNH_2

Secondary → R_2NH

Tertiary → R_3N

Biology

Biodiversity → Threats → Conservation

In-situ → Natural Habitat

Ex-situ → Outside Natural Habitat

If any link feels weak, return to NCERT and revise it.

Then:

Read → Recall → Practise → Analyse → Revise → Retest

CONCLUSION

Part 62 connects three important areas of NEET preparation.

Physics

Energy Levels → Electronic Transitions → Photon Emission → Hydrogen Spectrum

Chemistry

Nitrogen Lone Pair → Basicity → Reaction → Product

Biology

Biodiversity → Threats → Conservation → Ecological Stability

The goal is not merely to answer more questions.

The real goal is:

Understand → Remember → Apply → Analyse → Correct → Repeat

Do not worry if one topic takes longer than expected.

Strong preparation is not created overnight.

It is built through repeated, focused effort.

Read your NCERT.

Recall what you studied.

Practise questions.

Analyse mistakes.

Revise weak areas.

Retest yourself.

And repeat.

Read → Understand → Recall → Practise → Analyse → Revise → Retest

One day at a time.

One concept at a time.

One question at a time.

One improvement at a time.

Your consistency today can become your confidence tomorrow. 🌱📚

Part 62 English is complete.

Written with AI