Meta DescriptionNEET 2027 Possible Questions Part 75 provides focused practice in Physics, Chemistry and Biology with important concepts, formulas, NCERT-based MCQs, active recall, error analysis and revision strategies.SEO KeywordsNEET 2027, NEET 2027 Possible Questions, NEET Physics MCQs, NEET Chemistry MCQs, NEET Biology MCQs, NCERT NEET Preparation, Electrostatic Potential, Solutions Chemistry, Biotechnology Principles, NEET Practice Questions.Hashtags#NEET2027 #NEETPreparation #NEETMCQs #NCERT #Physics #Chemistry #Biology #NEETAspirants #MedicalEntrance #NEETPractice

NEET 2027 Possible Questions — Part 75 | English Edition

NEET 2027 POSSIBLE QUESTIONS — PART 75

English Edition

Physics • Chemistry • Biology

NCERT-Focused Practice • Concept Building • MCQs • Active Recall • Error Analysis

Meta Description

NEET 2027 Possible Questions Part 75 provides focused practice in Physics, Chemistry and Biology with important concepts, formulas, NCERT-based MCQs, active recall, error analysis and revision strategies.

SEO Keywords

NEET 2027, NEET 2027 Possible Questions, NEET Physics MCQs, NEET Chemistry MCQs, NEET Biology MCQs, NCERT NEET Preparation, Electrostatic Potential, Solutions Chemistry, Biotechnology Principles, NEET Practice Questions.

Hashtags

#NEET2027 #NEETPreparation #NEETMCQs #NCERT #Physics #Chemistry #Biology #NEETAspirants #MedicalEntrance #NEETPractice

INTRODUCTION

Dear NEET aspirant, welcome to Part 75.

Every new part is another opportunity to strengthen your foundation. The goal is not to predict the actual NEET paper. The goal is to practise important concepts that can improve your understanding and question-solving ability.

This part covers:

Physics: Electrostatic Potential and Capacitance

Chemistry: Solutions

Biology: Biotechnology — Principles and Processes

The most useful study cycle remains:

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

1. PHYSICS

Electrostatic Potential and Capacitance

1.1 Electric Potential

Electric potential at a point is defined as the work done per unit positive test charge in bringing it from infinity to that point, without acceleration.

[ V=\frac{W}{q} ]

The SI unit of electric potential is volt (V).

Important idea

Electric potential is a scalar quantity.

This is important because scalar quantities are added algebraically.

1.2 Potential Due to a Point Charge

For a point charge (q), the electric potential at distance (r) is:

[ V=\frac{1}{4\pi\varepsilon_0}\frac{q}{r} ]

Therefore:

Positive charge produces positive potential.

Negative charge produces negative potential.

Potential decreases in magnitude as distance increases.

1.3 Potential Difference

Potential difference between two points can be understood as work done per unit charge in moving a test charge between those points.

[ V_B-V_A=\frac{W}{q} ]

The sign depends on the chosen direction and definition of work.

1.4 Relation Between Electric Field and Potential

In one-dimensional form:

[ E=-\frac{dV}{dr} ]

The negative sign indicates that the electric field points in the direction of decreasing potential.

Memory idea

Electric field → rate of change of potential with distance.

1.5 Equipotential Surface

An equipotential surface is a surface on which electric potential is the same at every point.

Therefore:

[ \Delta V=0 ]

No work is done in moving a charge along an equipotential surface.

An electric field is perpendicular to an equipotential surface.

1.6 Capacitance

Capacitance is defined as:

[ C=\frac{Q}{V} ]

where:

(C) = capacitance

(Q) = charge

(V) = potential difference

The SI unit is farad (F).

1.7 Parallel Plate Capacitor

For a parallel plate capacitor in vacuum:

[ C=\frac{\varepsilon_0 A}{d} ]

where:

(A) = area of plates

(d) = separation between plates

(\varepsilon_0) = permittivity of free space

Therefore:

Increasing plate area increases capacitance.

Increasing plate separation decreases capacitance.

1.8 Energy Stored in a Capacitor

The energy stored in a capacitor is:

[ U=\frac12 CV^2 ]

Equivalent forms include:

[ U=\frac12 QV ]

and 

[ U=\frac{Q^2}{2C} ]

These formulas are important for numerical problems.

PHYSICS MCQs

Q1. Electric potential is a:

A. Vector quantity

B. Scalar quantity

C. Tensor quantity

D. Dimensionless quantity

Answer: B

Q2. The SI unit of electric potential is:

A. Ampere

B. Coulomb

C. Volt

D. Ohm

Answer: C

Q3. The potential due to a point charge is proportional to:

A. (r)

B. (r^2)

C. (1/r)

D. (1/r^2)

Answer: C

Q4. Capacitance is given by:

A. (C=QV)

B. (C=Q/V)

C. (C=V/Q)

D. (C=Q+V)

Answer: B

Q5. The SI unit of capacitance is:

A. Volt

B. Coulomb

C. Farad

D. Joule

Answer: C

Q6. For a parallel plate capacitor:

[ C=\frac{\varepsilon_0A}{d} ]

If the plate separation increases, capacitance:

A. Increases

B. Decreases

C. Remains unchanged

D. Becomes infinite

Answer: B

Q7. Energy stored in a capacitor is:

A. (CV)

B. (QV)

C. (\frac12CV^2)

D. (2CV^2)

Answer: C

Q8. Electric field is perpendicular to an equipotential surface because:

A. Potential is infinite

B. Work along the surface is zero

C. Charge is always zero

D. Electric field is always zero

Answer: B

Physics Quick Revision

Remember:

Potential → (V=W/q)

Point charge → (V\propto1/r)

Field → (E=-dV/dr)

Capacitance → (C=Q/V)

Parallel plate → (C=\varepsilon_0A/d)

Energy → (U=\frac12CV^2)

Equipotential → (W=0) along the surface

Memory Chain

Charge → Potential → Field → Capacitance → Stored Energy

2. CHEMISTRY

Solutions

2.1 What Is a Solution?

A solution is a homogeneous mixture of two or more components.

The component present in a larger amount is generally called the solvent, while the component dissolved in it is called the solute.

Examples include:

Salt in water

Sugar in water

Gas mixtures

2.2 Concentration of Solutions

Different methods can be used to express concentration.

Important ones for NEET include:

Molarity

Molality

Mole fraction

Mass percentage

Volume percentage

2.3 Molarity

Molarity is defined as the number of moles of solute present per litre of solution.

[ M=\frac{\text{moles of solute}}{\text{volume of solution in litre}} ]

Molarity depends on temperature because solution volume can change with temperature.

2.4 Molality

Molality is:

[ m=\frac{\text{moles of solute}}{\text{mass of solvent in kg}} ]

Unlike molarity, molality is independent of temperature because mass does not change with temperature.

Important comparison

Molarity → volume of solution

Molality → mass of solvent

This distinction is frequently tested.

2.5 Mole Fraction

For a component (i):

[ x_i=\frac{n_i}{\sum n} ]

For a binary solution:

[ x_A+x_B=1 ]

Mole fraction is dimensionless.

2.6 Raoult's Law

For an ideal solution containing a volatile component:

[ p_A=x_Ap_A^0 ]

where:

(p_A) = partial vapour pressure

(x_A) = mole fraction

(p_A^0) = vapour pressure of pure component A

For a solution containing multiple volatile components:

[ P=p_A+p_B ]

2.7 Ideal and Non-Ideal Solutions

An ideal solution approximately obeys Raoult's law over the entire composition range.

For an ideal solution:

[ \Delta H_{\text{mix}}=0 ]

and

[ \Delta V_{\text{mix}}=0 ]

Non-ideal solutions show positive or negative deviations from Raoult's law.

2.8 Colligative Properties

Colligative properties depend mainly on the number of solute particles, rather than their chemical identity.

Important colligative properties include:

Relative lowering of vapour pressure

Elevation of boiling point

Depression of freezing point

Osmotic pressure

2.9 Osmosis

Osmosis is the movement of solvent through a semipermeable membrane from a region of lower solute concentration toward a region of higher solute concentration.

Osmotic pressure is represented by:

[ \pi=CRT ]

for dilute solutions under the appropriate conditions.

CHEMISTRY MCQs

Q1. A solution is generally:

A. Heterogeneous

B. Homogeneous

C. Always solid

D. Always gaseous

Answer: B

Q2. Molarity is expressed as:

A. Moles of solute per kg of solvent

B. Moles of solute per litre of solution

C. Grams of solvent per mole

D. Moles of solvent per litre

Answer: B

Q3. Molality is based on:

A. Volume of solution

B. Mass of solvent

C. Volume of solvent only

D. Mass of solution only

Answer: B

Q4. Which concentration unit is independent of temperature?

A. Molarity

B. Molality

C. Volume percentage

D. Normal volume

Answer: B

Q5. Mole fraction is:

A. Always greater than 1

B. Dimensionless

C. Measured in litres

D. Measured in grams

Answer: B

Q6. Raoult's law relates vapour pressure to:

A. Density

B. Mole fraction

C. Atomic number

D. pH only

Answer: B

Q7. Which is a colligative property?

A. Colour

B. Osmotic pressure

C. Density only

D. Viscosity only

Answer: B

Q8. Osmotic pressure for a dilute solution can be represented by:

A. (\pi=CRT)

B. (\pi=C/R T)

C. (\pi=RT/C)

D. (\pi=CR/T)

Answer: A

Chemistry Quick Revision

Solution → Homogeneous mixture

Molarity → moles / litre of solution

Molality → moles / kg of solvent

Mole fraction → moles of component / total moles

Raoult's law → (p=xp^0)

Colligative properties → number of solute particles

Osmotic pressure → (\pi=CRT)

Memory Chain

Concentration → Vapour Pressure → Colligative Properties → Osmosis

3. BIOLOGY

Biotechnology — Principles and Processes

3.1 What Is Biotechnology?

Biotechnology involves the use of living organisms, cells, biological systems or their components to develop useful products and processes.

Modern biotechnology commonly involves:

Genetic engineering

Bioprocess engineering

3.2 Genetic Engineering

Genetic engineering involves deliberate modification or manipulation of genetic material.

Recombinant DNA technology is an important foundation of modern biotechnology.

A simplified sequence is:

Isolation → Cutting → Joining → Introduction → Selection → Expression

3.3 Restriction Enzymes

Restriction enzymes recognize specific DNA sequences and cut DNA at or near those sites.

Many restriction enzymes recognize specific palindromic sequences.

These enzymes are often described as molecular scissors.

Memory idea

Restriction enzyme → cuts DNA

3.4 DNA Ligase

DNA ligase joins DNA fragments by forming phosphodiester bonds.

It is therefore often compared with molecular glue.

Easy memory

Restriction enzyme = cuts

DNA ligase = joins

3.5 Vectors

A vector is used to carry foreign DNA into a host cell.

Plasmids are commonly used as vectors in recombinant DNA technology.

Important features of a suitable cloning vector can include:

Origin of replication

Selectable marker

Cloning site

3.6 Origin of Replication

The origin of replication, often called ori, is a sequence from which replication begins.

It is an important component of many cloning vectors.

3.7 Selectable Marker

A selectable marker helps identify or select cells that have received the desired recombinant DNA.

It can allow researchers to distinguish transformed cells from non-transformed cells.

3.8 PCR

PCR stands for Polymerase Chain Reaction.

It is used to amplify a specific DNA sequence.

The major repeated stages are:

Denaturation

Annealing

Extension

A thermostable DNA polymerase, such as Taq polymerase, is commonly associated with PCR.

3.9 Gel Electrophoresis

DNA fragments can be separated according to size using gel electrophoresis.

DNA fragments are negatively charged and move toward the positive electrode in an electric field.

Smaller DNA fragments generally move faster through the gel matrix than larger fragments.

BIOLOGY MCQs

Q1. Modern biotechnology commonly involves:

A. Genetic engineering and bioprocess engineering

B. Only taxonomy

C. Only ecology

D. Only microscopy

Answer: A

Q2. Restriction enzymes are used to:

A. Join DNA fragments

B. Cut DNA at specific sequences

C. Produce ATP

D. Translate mRNA

Answer: B

Q3. DNA ligase is primarily involved in:

A. Cutting DNA

B. Joining DNA fragments

C. Destroying proteins

D. Replicating ribosomes

Answer: B

Q4. A commonly used cloning vector is:

A. Plasmid

B. Ribosome

C. Lysosome

D. Golgi body

Answer: A

Q5. The origin of replication is associated with:

A. Initiation of DNA replication

B. Protein digestion

C. Lipid synthesis

D. Cell respiration only

Answer: A

Q6. PCR is used mainly for:

A. DNA amplification

B. Protein digestion

C. Lipid storage

D. Cell division

Answer: A

Q7. Taq polymerase is associated with:

A. PCR

B. Photosynthesis

C. Translation

D. Glycolysis

Answer: A

Q8. During gel electrophoresis, DNA moves toward the:

A. Negative electrode

B. Positive electrode

C. Neutral centre only

D. Light source

Answer: B

Biology Quick Revision

Remember:

Biotechnology → Genetic engineering + Bioprocess engineering

Restriction enzyme → Cutting

DNA ligase → Joining

Vector → Carries foreign DNA

ori → Replication begins

Selectable marker → Identification/selection

PCR → DNA amplification

Gel electrophoresis → DNA separation

Memory Chain

Cut → Join → Carry → Amplify → Separate → Select

ACTIVE RECALL

Close your book and answer these questions.

Physics

What is electric potential?

Is electric potential scalar or vector?

Write the potential due to a point charge.

What is an equipotential surface?

Write the formula for capacitance.

Write the energy stored in a capacitor.

Chemistry

What is a solution?

Define molarity.

Define molality.

Which one is temperature independent?

What is Raoult's law?

What are colligative properties?

Write the osmotic-pressure equation.

Biology

What is biotechnology?

What are restriction enzymes?

What is the function of DNA ligase?

What is a cloning vector?

What is the function of ori?

What is PCR?

Name the three major PCR stages.

Why is gel electrophoresis used?

CONCEPT CONNECTION

A strong NEET student should gradually connect different chapters.

Physics

Electric charge creates an electric field and is associated with electric potential.

Chemistry

The number and nature of particles in a solution influence its measurable properties.

Biology

Biotechnology uses our understanding of DNA to manipulate, amplify and analyse genetic material.

The common learning pattern is:

Structure → Property → Principle → Application → Question

ERROR ANALYSIS

After every practice session, classify your mistakes.

Concept Error

You misunderstood the underlying principle.

Formula Error

You remembered the concept but used the wrong equation.

Unit Error

You failed to convert units correctly.

Calculation Error

The method was correct but arithmetic went wrong.

Recall Error

You had studied the fact but could not retrieve it.

Careless Error

You misunderstood or rushed through the question.

Use this simple error log:

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

SMART REVISION STRATEGY

First Reading

Understand the concept.

First Recall

Close the book and reproduce the main points.

First Practice

Solve the MCQs without looking at the answers.

Error Review

Study every wrong question.

Delayed Recall

Return to the topic after several days.

Retest

Solve a fresh set of questions.

A question that you get wrong today can become one of your strongest questions after proper correction.

MOTIVATION

Dear friend, remember that preparation is built through repetition.

You do not need to master the entire NEET syllabus in one sitting.

You need to improve one concept at a time.

If you make a mistake, investigate it.

If you forget a formula, revise it.

If you struggle with a chapter, divide it into smaller pieces.

If you score less in one test, use the result as feedback rather than allowing it to stop your progress.

One concept. One question. One correction. One revision. One step forward.

Your consistency today can become your confidence tomorrow. 🌱📚

SEVEN-STEP STUDY CYCLE

1. Read

Study NCERT carefully.

2. Understand

Explain the concept in your own words.

3. Recall

Close the book and reproduce what you learned.

4. Practise

Solve MCQs.

5. Analyse

Understand every mistake.

6. Revise

Return to weak areas.

7. Retest

Test yourself again after an interval.

Golden Formula

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

IMPORTANT NEET DISCLAIMER

This article is an independently prepared educational practice resource.

The questions presented here are possible practice questions, not official NEET 2027 questions.

They are not leaked questions, official predictions, or guaranteed questions.

No particular question can be guaranteed to appear in NEET 2027.

Students should always prioritize:

the latest official NEET syllabus,

NCERT textbooks,

previous-year questions,

regular MCQ practice,

mock tests,

revision,

error analysis,

and official examination information.

Always verify examination-related information through official sources.

KEY TAKEAWAYS

Physics

Potential → (V=W/q)

Point charge → (V=kq/r)

Capacitance → (C=Q/V)

Parallel plate capacitor → (C=\varepsilon_0A/d)

Capacitor energy → (U=\frac12CV^2)

Chemistry

Molarity → moles/litre of solution

Molality → moles/kg of solvent

Mole fraction → component moles/total moles

Raoult's law → (p=xp^0)

Osmotic pressure → (\pi=CRT)

Biology

Restriction enzyme → Cut

DNA ligase → Join

Vector → Carry

PCR → Amplify

Gel electrophoresis → Separate

FINAL REVISION CHECK

Before you finish Part 75, ask yourself:

☐ Can I distinguish electric potential from electric field?

☐ Can I write the potential due to a point charge?

☐ Can I explain an equipotential surface?

☐ Can I write the capacitance formula?

☐ Can I calculate capacitor energy?

☐ Can I distinguish molarity from molality?

☐ Can I explain why molality is temperature independent?

☐ Can I state Raoult's law?

☐ Can I name the colligative properties?

☐ Can I explain restriction enzymes?

☐ Can I explain DNA ligase?

☐ Can I describe the basic stages of PCR?

☐ Can I explain the purpose of gel electrophoresis?

☐ Did I record my mistakes?

If you can answer these confidently, Part 75 has become another useful step in your preparation.

CONCLUSION

NEET preparation is not about knowing everything immediately.

It is about building knowledge repeatedly until concepts become familiar, questions become manageable and mistakes become learning opportunities.

Keep your focus on the process:

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

Do not compare your journey with someone else's.

Build your own progress, one day at a time.

One concept. One question. One correction. One revision. One step forward.

Your consistency today can become your confidence tomorrow. 🌱📚

Keep studying. Keep correcting. Keep moving forward.

Add Balanced NEET-Level Questions

Include Solutions After Each Question

Correct Potential-Difference Sign Convention

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