Meta DescriptionNEET 2027 Possible Questions Set – Part 32 featuring NCERT-based Physics, Chemistry and Biology practice questions on Ray Optics and Optical Instruments, Amines, and Human Health and Disease, with quick revision, concept boosters, study strategy and disclaimer.SEO KeywordsNEET 2027, NEET preparation, NEET Physics MCQ, NEET Chemistry MCQ, NEET Biology MCQ, Ray Optics, Optical Instruments, Amines, Human Health and Disease, NCERT, NEET practice questionsHashtags#NEET2027 #NEETPreparation #PhysicsMCQ #ChemistryMCQ #BiologyMCQ #NCERT #RayOptics #Amines #HumanHealth #NEETAspirants
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NEET 2027 Possible Questions Set – Part 32 featuring NCERT-based Physics, Chemistry and Biology practice questions on Ray Optics and Optical Instruments, Amines, and Human Health and Disease, with quick revision, concept boosters, study strategy and disclaimer.
SEO Keywords
NEET 2027, NEET preparation, NEET Physics MCQ, NEET Chemistry MCQ, NEET Biology MCQ, Ray Optics, Optical Instruments, Amines, Human Health and Disease, NCERT, NEET practice questions
Hashtags
#NEET2027 #NEETPreparation #PhysicsMCQ #ChemistryMCQ #BiologyMCQ #NCERT #RayOptics #Amines #HumanHealth #NEETAspirants
Introduction
Welcome to Part 32 of the NEET 2027 Possible Questions Series.
This part covers:
⚛️ Physics — Ray Optics and Optical Instruments
🧪 Chemistry — Amines
🧬 Biology — Human Health and Disease
The questions are intended for conceptual practice, NCERT revision and self-assessment. They are not guaranteed predictions of the actual NEET 2027 examination.
⚛️ Physics
Ray Optics and Optical Instruments
Question 1
The phenomenon in which light changes its direction when it passes from one transparent medium to another is called:
A. Reflection
B. Refraction
C. Diffraction
D. Interference
Answer: B. Refraction
Question 2
According to the law of reflection:
A. Angle of incidence is greater than angle of reflection
B. Angle of incidence is less than angle of reflection
C. Angle of incidence equals angle of reflection
D. Both angles are always zero
Answer: C. Angle of incidence equals angle of reflection
Question 3
The SI unit of power of a lens is:
A. Metre
B. Dioptre
C. Watt
D. Pascal
Answer: B. Dioptre
Question 4
A convex lens is also known as a:
A. Diverging lens
B. Converging lens
C. Plane lens
D. Cylindrical mirror
Answer: B. Converging lens
Question 5
The refractive index of a medium is related to the speed of light in vacuum and in the medium by:
A. n = v/c
B. n = c/v
C. n = cv
D. n = c + v
Answer: B. n = c/v
🧪 Chemistry
Amines
Question 1
Amines are derivatives of:
A. Water
B. Ammonia
C. Methane only
D. Carbon dioxide
Answer: B. Ammonia
Question 2
The functional group of a primary amine can be represented as:
A. –OH
B. –NH₂
C. –COOH
D. –CHO
Answer: B. –NH₂
Question 3
Which of the following is a primary amine?
A. CH₃NH₂
B. (CH₃)₂NH
C. (CH₃)₃N
D. NH₄Cl
Answer: A. CH₃NH₂
Question 4
Amines show basic character mainly because:
A. Nitrogen has a lone pair of electrons
B. Nitrogen has no electrons
C. Carbon is always positively charged
D. Hydrogen is absent
Answer: A. Nitrogen has a lone pair of electrons
Question 5
Aniline is an example of:
A. Aliphatic amine
B. Aromatic amine
C. Carboxylic acid
D. Ketone
Answer: B. Aromatic amine
🧬 Biology
Human Health and Disease
Question 1
A disease-causing organism is generally called a:
A. Pathogen
B. Producer
C. Decomposer
D. Autotroph
Answer: A. Pathogen
Question 2
Which type of immunity is developed after vaccination?
A. Acquired immunity
B. No immunity
C. Genetic mutation
D. Mechanical immunity
Answer: A. Acquired immunity
Question 3
Antibodies are mainly produced by:
A. Red blood cells
B. B lymphocytes and their differentiated cells
C. Platelets
D. Neurons
Answer: B. B lymphocytes and their differentiated cells
Question 4
Which disease is caused by Plasmodium?
A. Malaria
B. Typhoid
C. Pneumonia
D. Ringworm
Answer: A. Malaria
Question 5
Which of the following is a viral disease?
A. Malaria
B. Typhoid
C. AIDS
D. Ringworm
Answer: C. AIDS
Quick Revision
Physics — Ray Optics
Remember:
Change in direction of light between media → Refraction
Law of reflection → i = r
Power of lens → measured in dioptre
Convex lens → converging lens
Concave lens → diverging lens
Refractive index → n = c/v
Chemistry — Amines
Remember:
Amines are derivatives of ammonia.
Primary amine → R–NH₂
Secondary amine → R₂NH
Tertiary amine → R₃N
Nitrogen's lone pair is important for the basic character of amines.
Aniline is an aromatic amine.
Biology — Human Health and Disease
Remember:
Disease-causing organism → Pathogen
Vaccination can produce acquired immunity.
Antibodies are associated with B lymphocytes and their differentiated cells.
Plasmodium → Malaria
HIV → AIDS
Concept Booster
1. Ray Optics
When light travels from one transparent medium to another, its speed may change. This can cause a change in its direction, known as refraction.
The refractive index is an important concept:
n = c/v
where:
n = refractive index
c = speed of light in vacuum
v = speed of light in the medium
For NEET, revise:
Reflection
Refraction
Total internal reflection
Spherical mirrors
Lenses
Lens formula
Magnification
Optical instruments
2. Amines
Amines contain nitrogen and can be classified according to the number of carbon groups attached to nitrogen.
Primary Amine
R–NH₂
Secondary Amine
R₂NH
Tertiary Amine
R₃N
The lone pair on nitrogen plays an important role in the chemistry of amines.
For NEET, pay attention to:
Classification
Nomenclature
Preparation
Physical properties
Basic character
Chemical reactions
Diazonium salts
Aniline and aromatic amines
3. Human Health and Disease
Human health is influenced by many factors, including:
Infectious agents
Nutrition
Immunity
Lifestyle
Environmental conditions
Important NCERT topics include:
Common infectious diseases
Disease-causing organisms
Immunity
Vaccination
AIDS
Cancer
Allergies
Drugs and alcohol abuse
Important distinction
Innate immunity is present naturally as a first line of defence.
Acquired immunity develops during an individual's life and can involve specific immune responses.
Vaccination works by stimulating the immune system to develop protection against particular infections.
Practice Challenge
Try answering these without looking at the answers.
Physics
What is refraction of light?
State the law of reflection.
What is the SI unit of lens power?
Why is a convex lens called a converging lens?
What does refractive index represent?
Chemistry
What are amines?
Write the general formula of a primary amine.
What is the difference between primary, secondary and tertiary amines?
Why are amines basic?
What type of amine is aniline?
Biology
What is a pathogen?
What is acquired immunity?
Which organism causes malaria?
What is AIDS?
What is the role of antibodies in immunity?
Study Strategy
Physics
Follow:
Concept → Diagram → Formula → MCQ → Numerical → Error Analysis
For Ray Optics, practise drawing:
Ray diagrams for mirrors
Ray diagrams for lenses
Refraction diagrams
Total internal reflection
Optical instruments
A correct diagram can make many optics problems easier to understand.
Chemistry
For Amines, create a classification chart:
Primary → R–NH₂
Secondary → R₂NH
Tertiary → R₃N
Then revise:
Preparation → Basicity → Reactions → Products
Try to understand why different amines show different basic strengths rather than memorising isolated orders.
Biology
Use a Disease → Causative Agent → Symptoms/Effects → Prevention table.
For example:
Disease
Causative Agent
Malaria
Plasmodium
Typhoid
Salmonella typhi
AIDS
HIV
Ringworm
Fungi
Use your NCERT text for the exact details and examples required for your syllabus.
Active Recall Method
After studying a topic, close the textbook.
Take a blank page and write everything you remember.
For example, after studying Amines, try to write:
Classification
General formulae
Basic character
Important reactions
Important examples
Then compare your notes with NCERT.
The missing points are your revision targets.
Motivation
NEET preparation is not a competition against yesterday's score alone.
It is a process of building understanding and reducing mistakes.
If you make ten mistakes today and understand all ten, tomorrow can be better.
Do not simply count the questions you got wrong.
Ask:
Why was I wrong?
Was the concept unclear?
Did I misread the question?
Did I forget a formula?
Was it a calculation mistake?
Did I confuse two similar biological facts?
This type of analysis turns a test into a learning tool.
A Simple Revision Cycle
Step 1 — Learn
Understand the NCERT concept.
Step 2 — Recall
Try to reproduce it without looking.
Step 3 — Practise
Solve MCQs.
Step 4 — Analyse
Study every mistake.
Step 5 — Revise
Return to the relevant concept.
Step 6 — Retest
Solve similar questions later.
Step 7 — Track
Record recurring weaknesses.
This final step is important because repeated mistakes often identify the topics that need the most attention.
One-Day Practice Plan
Physics
Ray Optics: 45–60 minutes concept revision + MCQs.
Chemistry
Amines: 45–60 minutes NCERT/reaction revision + MCQs.
Biology
Human Health and Disease: 60–90 minutes NCERT reading + active recall.
Final Review
Spend 20–30 minutes reviewing only your mistakes.
The exact study time should be adjusted according to your own schedule and preparation level.
Important NEET Reminder
Do not depend entirely on “expected questions.”
A strong preparation should cover the entire prescribed syllabus.
Possible-question series can be useful for:
Revision
Practice
Identifying weak areas
Testing recall
Building confidence
But they should supplement—not replace—NCERT study, the official syllabus and previous-year questions.
Disclaimer
This material is provided for educational and practice purposes only.
The questions in this series are not official NEET 2027 questions and are not guaranteed predictions of the actual examination.
Students should follow the latest NCERT textbooks, official NEET syllabus, previous-year question papers and reliable educational resources.
Conclusion
Part 32 Focus
⚛️ Ray Optics and Optical Instruments
🧪 Amines
🧬 Human Health and Disease
Remember:
Learn → Recall → Practise → Analyse → Revise → Retest
Do not be discouraged by difficult questions.
A difficult question can reveal a concept that needs more attention.
Do not be overconfident after easy questions.
Easy questions can strengthen speed and accuracy.
The best preparation combines:
Conceptual Understanding + NCERT Revision + MCQ Practice + Error Analysis + Repeated Revision
🌟 Best wishes to every NEET 2027 aspirant.
📚 Study consistently. Understand deeply. Practise regularly. Correct your mistakes.
🩺 One concept at a time, one question at a time, one improvement at a time.
Written with AI
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