Meta DescriptionNEET 2027 Possible Questions Set – Part 29 with NCERT-based Physics, Chemistry, and Biology MCQs covering Atoms, Haloalkanes and Haloarenes, and Organisms and Populations, with revision notes, study strategy, and motivation.SEO KeywordsNEET 2027, NEET 2027 preparation, Physics MCQs, Chemistry MCQs, Biology MCQs, NCERT, Atoms, Haloalkanes, Organisms and Populations, NEET practice questionsHashtags#NEET2027 #NEETPreparation #PhysicsMCQ #ChemistryMCQ #BiologyMCQ #NCERT #NEETAspirants #MedicalEntrance

NEET 2027 Possible Questions Set – Part 29

English Educational Edition

Meta Description

NEET 2027 Possible Questions Set – Part 29 with NCERT-based Physics, Chemistry, and Biology MCQs covering Atoms, Haloalkanes and Haloarenes, and Organisms and Populations, with revision notes, study strategy, and motivation.

SEO Keywords

NEET 2027, NEET 2027 preparation, Physics MCQs, Chemistry MCQs, Biology MCQs, NCERT, Atoms, Haloalkanes, Organisms and Populations, NEET practice questions

Hashtags

#NEET2027 #NEETPreparation #PhysicsMCQ #ChemistryMCQ #BiologyMCQ #NCERT #NEETAspirants #MedicalEntrance

Introduction

Welcome to Part 29 of the NEET 2027 Possible Questions Series.

This part covers:

⚛️ Physics: Atoms

🧪 Chemistry: Haloalkanes and Haloarenes

🧬 Biology: Organisms and Populations

These questions are designed for conceptual practice and NCERT-based revision. They are not predictions of the exact NEET 2027 examination questions.

⚛️ Physics Possible Questions

Chapter: Atoms

Question 1

According to Rutherford's atomic model, most of the atom is:

A. Positively charged

B. Empty space

C. Negatively charged

D. Filled with neutrons

Answer: B. Empty space

Question 2

Bohr's atomic model assumes that electrons move around the nucleus in:

A. Any arbitrary orbit

B. Certain stable orbits

C. Straight lines only

D. Random paths

Answer: B. Certain stable orbits

Question 3

The energy of an electron in a hydrogen atom is:

A. Always positive

B. Always zero

C. Quantised

D. Independent of the energy level

Answer: C. Quantised

Question 4

When an electron in an atom moves 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

Question 5

The line spectrum of hydrogen provides evidence for:

A. Continuous energy levels

B. Quantised energy levels

C. Absence of electrons

D. Continuous emission only

Answer: B. Quantised energy levels

🧪 Chemistry Possible Questions

Chapter: Haloalkanes and Haloarenes

Question 1

Haloalkanes contain a halogen atom attached to:

A. An alkyl group

B. A carboxyl group only

C. An amino group only

D. A carbonyl oxygen

Answer: A. An alkyl group

Question 2

Which of the following is a haloalkane?

A. CH₃OH

B. CH₃Cl

C. CH₃COOH

D. CH₃NH₂

Answer: B. CH₃Cl

Question 3

The carbon-halogen bond in haloalkanes is generally:

A. Non-polar

B. Polar

C. Metallic

D. Ionic in every case

Answer: B. Polar

Question 4

In an SN2 reaction, the reaction generally occurs through:

A. A two-step mechanism involving a carbocation

B. A single concerted step

C. A free radical only

D. An oxidation step only

Answer: B. A single concerted step

Question 5

Chlorobenzene is classified as a:

A. Haloalkane

B. Haloarene

C. Alcohol

D. Amine

Answer: B. Haloarene

🧬 Biology Possible Questions

Chapter: Organisms and Populations

Question 1

The place where an organism naturally lives is called its:

A. Niche

B. Habitat

C. Population

D. Community

Answer: B. Habitat

Question 2

A group of individuals of the same species living in a particular geographical area is called a:

A. Community

B. Population

C. Ecosystem

D. Biome

Answer: B. Population

Question 3

The functional role of an organism in its environment is called its:

A. Habitat

B. Niche

C. Biome

D. Territory only

Answer: B. Niche

Question 4

Which of the following is an abiotic factor?

A. Predation

B. Competition

C. Temperature

D. Parasitism

Answer: C. Temperature

Question 5

The relationship in which both interacting species benefit is called:

A. Predation

B. Parasitism

C. Mutualism

D. Competition

Answer: C. Mutualism

Quick Revision

Physics

Rutherford's model indicated that most of the atom is empty space.

Bohr proposed stable orbits for electrons.

Atomic energy levels are quantised.

Transition from higher to lower energy generally involves photon emission.

Hydrogen's line spectrum supports quantised energy levels.

Chemistry

Haloalkanes contain halogen attached to an alkyl group.

CH₃Cl is a haloalkane.

Carbon-halogen bonds are generally polar.

SN2 reactions occur through a single concerted step.

Chlorobenzene is a haloarene.

Biology

Natural living place = habitat.

Same-species group in an area = population.

Functional role = niche.

Temperature is an abiotic factor.

Mutualism benefits both interacting species.

Concept Booster

1. Atoms

The atomic chapter connects classical atomic models with the development of quantum ideas.

Important areas for NEET include:

Rutherford's Atomic Model

Atomic Spectra

Bohr's Model

Energy Levels

Hydrogen Spectrum

Excitation and De-excitation

Ionisation Energy

Remember the basic idea:

Higher Energy Level → Lower Energy Level = Photon Emission

Lower Energy Level → Higher Energy Level = Photon Absorption

2. Haloalkanes and Haloarenes

This chapter is important for understanding organic reaction mechanisms.

Focus on:

Classification

Nomenclature

Nature of C–X Bond

Preparation

SN1 Reaction

SN2 Reaction

Elimination Reactions

Haloarenes

Environmental Effects of Some Halogen Compounds

Important comparison

SN1: generally proceeds through a carbocation intermediate.

SN2: generally occurs in a single concerted step.

Understanding the mechanism is more useful than simply memorising reaction names.

3. Organisms and Populations

This Biology chapter introduces ecological relationships at the organism and population level.

Important concepts:

Habitat

Niche

Population

Adaptations

Population Attributes

Birth Rate

Death Rate

Age Distribution

Population Growth

Mutualism

Competition

Predation

Parasitism

A useful chain is:

Organism → Population → Community → Ecosystem

Practice Challenge

Try answering these without looking at the answers.

1.

What did Rutherford's experiment reveal about the structure of the atom?

2.

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

3.

Is CH₃Cl a haloalkane or haloarene?

4.

What is the major mechanistic feature of an SN2 reaction?

5.

What is the difference between habitat and niche?

6.

What is a population?

7.

Give one abiotic factor.

8.

What is mutualism?

If you can answer these confidently, revise the relevant NCERT sections and then move to more difficult questions.

Daily Practice Plan

Physics

40 MCQs + Formula/Concept Revision

Chemistry

40 MCQs + Reaction Mechanism Revision

Biology

80 MCQs + NCERT Reading

Previous-Year Questions

30 questions

Error Analysis

Review previously incorrect questions before starting a new practice session.

Study Strategy

Physics: Draw Energy-Level Diagrams

For Atomic Physics, draw simple energy-level diagrams.

Mark:

Higher Level → Lower Level → Photon Emitted

and

Lower Level → Higher Level → Photon Absorbed

Visual memory can make these concepts easier to recall.

Chemistry: Compare SN1 and SN2

Create a comparison table containing:

Number of steps

Intermediate

Molecularity

Rate dependence

Stereochemical outcome

Substrate preference

Then solve mechanism-based questions.

Biology: Make an Ecology Vocabulary List

Keep these terms together:

Habitat → Niche → Population → Community → Ecosystem

Do not confuse habitat with niche.

Habitat refers mainly to where an organism lives.

Niche refers to its functional role and position in the environment.

Motivation

NEET preparation is built from thousands of small decisions.

Choosing to revise one difficult topic instead of avoiding it.

Solving one more question after making a mistake.

Returning to NCERT when a fact is repeatedly forgotten.

Analysing a disappointing mock-test score instead of simply ignoring it.

These actions may seem small individually, but together they can change the quality of preparation.

Do not compare your daily progress with someone else's final result.

Compare your current understanding with your previous understanding.

Ask yourself:

Do I understand more than I did last week?

Am I making fewer repeated mistakes?

Is my accuracy improving?

If the answer is yes, you are moving in the right direction.

A Simple Revision Cycle

Learn → Practise → Make Mistakes → Analyse → Revise → Test Again

Do not be afraid of difficult questions.

A difficult question that exposes a weakness can be more valuable than an easy question that you already know.

The objective is not merely to increase the number of questions solved.

The objective is to increase the number of questions you can solve correctly and confidently.

Disclaimer

This material is provided for educational and practice purposes only.

The questions are not official NEET 2027 examination questions and should not be treated as guaranteed predictions.

Students should rely on the latest NCERT textbooks, official NEET syllabus, previous-year question papers, and reliable educational resources.

Conclusion

Part 29 Focus

⚛️ Atoms

🧪 Haloalkanes and Haloarenes

🧬 Organisms and Populations

Remember:

Understand → Practise → Analyse → Revise → Test → Improve

You do not have to master everything at once.

Master one concept.

Then another.

Then connect them.

Then practise.

Then revise.

That is how a large syllabus gradually becomes manageable.

Stay consistent. Stay patient. Keep improving your accuracy.

🌟 Best wishes to every NEET 2027 aspirant.

📚 Study deeply. Practise regularly. Analyse your mistakes. Revise NCERT repeatedly.

🩺 One well-understood concept today can become one less mistake in tomorrow's test.

Written with AI