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🔁 Counted from real papers — 1,063 questions

The questions boards repeat most.

We transcribed every BISE Lahore paper of 2023–2025 for these subjects and counted, sitting by sitting, which questions came back. Prepare these first. Answers are not printed here — the full bank, with textbook answers in English + Urdu, lives in Paper Studio.

Physics — Class 9

A total of 141 unique questions were mined for this subject — the most repeated questions are below.

3×

Differentiate between scalars and vectors.

ShortKinematics
2×

Define centre of mass.

ShortTurning Effects of Force
2×

Define density and its unit.

ShortMechanical Properties of Matter
2×

Define plasma physics.

ShortNature of Science
2×

Define power and its SI unit.

ShortWork, Energy and Power
2×

Define elastic limit.

ShortMechanical Properties of Matter
2×

Least count of digital vernier callipers is:

MCQPhysical Quantities and Measurements
2×

Define least count. What is the least count of a metre rod?

ShortPhysical Quantities and Measurements

Physics — Class 10

A total of 148 unique questions were mined for this subject — the most repeated questions are below.

3×

Which quantity remains unchanged in refraction of light?

MCQLight
3×

Write the two types of reflection of light.

ShortLight
3×

Define capacitance and write its formula.

MCQElectrostatics
3×

Half-life: what fraction of a radioactive sample remains after two half-lives?

MCQAtomic and Nuclear Physics
2×

The wave equation is: v = fλ

MCQWaves
2×

Define a wave and write its types.

ShortWaves
2×

Loudness of sound is related to: (amplitude)

MCQSound
2×

Sound is which form of energy?

MCQSound

Chemistry — Class 9

A total of 117 unique questions were mined for this subject — the most repeated questions are below.

3×

Define electronegativity. Which element has the highest value of electronegativity?

ShortPeriodic Table and Periodicity
2×

A bond formed between two non-metals is:

MCQChemical Bonding
2×

Define standard atmospheric pressure. What are its units?

ShortStates of Matter and Phase Changes
2×

How many moles are equivalent to 8 gm of CO₂?

MCQStoichiometry
2×

What is diffusion? Explain with an example.

ShortStates of Matter and Phase Changes
2×

What is the trend of electropositivity in a group and in a period?

ShortPeriodic Table and Periodicity
2×

Which one of the following is a heterogeneous mixture:

MCQStates of Matter and Phase Changes
2×

Why do atoms react?

ShortChemical Bonding

Chemistry — Class 10

A total of 99 unique questions were mined for this subject — the most repeated questions are below.

3×

One of the following is a reducing sugar:

MCQBiochemistry / Polymers
3×

Which one of the following gases is used to destroy harmful bacteria in water:

MCQWater
3×

Write the names of two acids used in the manufacturing of fertilizers.

ShortNitrogen and Sulphur
2×

Acid rain affects aquatic life by clogging fish gills because of:

MCQNitrogen and Sulphur
2×

The order of reactivity of hydrogen halides with alkenes is:

MCQHydrocarbons
2×

How is acid rain produced?

ShortNitrogen and Sulphur
2×

How do plants synthesize carbohydrates? Give the balanced chemical equation.

ShortBiochemistry / Polymers
2×

What are primary pollutants? Give two examples.

ShortNitrogen and Sulphur

Biology — Class 9

A total of 127 unique questions were mined for this subject — the most repeated questions are below.

2×

Write the scientific name of the mustard plant and the frog.

ShortBiodiversity
2×

Define species.

ShortBiodiversity
2×

Write two aims of classification.

ShortBiodiversity
2×

How photosynthesis gets effected by temperature?

ShortBioenergetics
2×

What is the difference between malignant and benign tumors?

ShortCell Cycle
2×

How does mitosis help in cell replacement in the body?

ShortCell Cycle
2×

Define the "Lock and Key Model" of enzymes.

ShortEnzymes
2×

Define magnification and resolution power.

ShortThe Cell

Biology — Class 10

A total of 106 unique questions were mined for this subject — the most repeated questions are below.

3×

Describe two harmful effects of smoking on human health.

ShortHuman Respiratory System
3×

What are pleural membranes? Write their function.

ShortHuman Respiratory System
3×

Write two sources of variations.

ShortEvolution
2×

What is asthma? Give its symptoms.

ShortHuman Respiratory System
2×

Define cellular respiration.

ShortHuman Respiratory System
2×

Differentiate between acute bronchitis and chronic bronchitis.

ShortHuman Respiratory System
2×

What is lithotripsy?

ShortHuman Urinary System
2×

What are the leading causes of kidney failure?

ShortHuman Urinary System

Computer Science — Class 9

A total of 96 unique questions were mined for this subject — the most repeated questions are below.

2×

Write down the characteristics of a good password.

LongEthical, Social, and Legal Concerns in Computer Usage
2×

Convert (A23)₁₆ into the binary number system.

ShortNumber Systems
2×

Define computer memory.

ShortNumber Systems
2×

Define the number system.

ShortNumber Systems
2×

What is the divide and conquer rule?

ShortComputational Thinking
2×

What is meant by encryption?

ShortIntroduction to Computer Networks
2×

What is meant by truth values?

ShortDigital Systems and Logic Design
2×

What is a prototype?

ShortEntrepreneurship in Digital Age

Computer Science — Class 10

A total of 96 unique questions were mined for this subject — the most repeated questions are below.

5×

How is a list created in Python? Write the general form.

ShortControl Structures in Python
3×

Define arithmetic operators.

ShortIntroduction to Python Programming
3×

Define logical operators. Explain the types of logical operators in detail.

LongIntroduction to Python Programming
3×

Write the syntax of the for loop in Python.

ShortControl Structures in Python
3×

_____ make it easier to read and write values in a list:

MCQControl Structures in Python
2×

A list is a _____ structure:

MCQControl Structures in Python
2×

A set of multiple statements grouped together as a unit in Python (shown by indentation) is called:

MCQControl Structures in Python
2×

An if statement written inside another if statement is called a _____ structure:

MCQControl Structures in Python

Mathematics — Class 10

A total of 133 unique questions were mined for this subject — the most repeated questions are below.

3×

Define the circumference of a circle.

ShortChords and Arcs of a Circle
3×

Prove that two chords of a circle which are equidistant from the centre, are congruent.

LongChords and Arcs of a Circle
3×

Find r when l = 52 cm and θ = 45°.

ShortTangent and Angles of a Circle
3×

Prove that the measure of a central angle of a minor arc of a circle is double that of the angle subtended by the corresponding major arc.

LongTangent and Angles of a Circle
2×

Define a rational fraction and write an example.

ShortAlgebraic Fractions
2×

An arc subtends a central angle of 40°. The corresponding chord will subtend a central angle of:

MCQChords and Arcs of a Circle
2×

The distance of any point of the circle to its centre is called:

MCQChords and Arcs of a Circle
2×

The length of a chord and the radial segment of a circle are congruent. The central angle made by the chord will be:

MCQChords and Arcs of a Circle

📊 How counting works

Frequency means: in how many different exam sessions (year × group) the same question appeared. Source: our own mining of BISE Lahore annual 2023, 2024 and 2025 papers — 1,063 unique questions in total. Chapter names follow the new textbooks.

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