BSc Question Paper with Answers for All Subjects

Preparing for a BSc examination requires a solid understanding of the syllabus and regular practice with questions from each subject. Here are questions and answers from key subjects to help students strengthen their preparation and improve their understanding of the concepts.

Physics

Question: What is Newton’s First Law of Motion?

Answer: Newton’s First Law states that an object will remain at rest or in uniform motion unless acted upon by an external force.

Question: Define acceleration.

Answer: Acceleration is the rate of change of velocity with respect to time.

Question: What is the unit of force in the SI system?

Answer: The unit of force in the SI system is the Newton (N).

Question: What is the formula for kinetic energy?

Answer: The formula for kinetic energy is KE=12mv2KE = \frac{1}{2}mv^2KE=21​mv2, where $m$ is mass and $v$ is velocity.

Question: What is Ohm’s Law?

Answer: Ohm’s Law states that the current through a conductor is directly proportional to the voltage across it, provided the temperature remains constant.

Question: What is the speed of light in a vacuum?

Answer: The speed of light in a vacuum is approximately 3×1083 \times 10^83×108 meters per second.

Question: Define refractive index.

Answer: Refractive index is the ratio of the speed of light in a vacuum to its speed in a medium.

Question: What is the law of conservation of energy?

Answer: The law states that energy cannot be created or destroyed, only transformed from one form to another.

Question: What are scalar and vector quantities?

Answer: Scalars have only magnitude, while vectors have both magnitude and direction.

Question: State Hooke’s Law.

Answer: Hooke’s Law states that the force needed to extend or compress a spring is directly proportional to the displacement of the spring.

Question: What is thermal conductivity?

Answer: Thermal conductivity is the property of a material that indicates its ability to conduct heat.

Question: What are the three modes of heat transfer?

Answer: The three modes are conduction, convection, and radiation.

Question: What is a black body?

Answer: A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle.

Question: What is resonance?

Answer: Resonance occurs when a system vibrates at its natural frequency due to an external periodic force.

Question: Define work done in physics.

Answer: Work is done when a force applied to an object moves it in the direction of the force.

Question: What is a photon?

Answer: A photon is a quantum of electromagnetic energy.

Question: What is the principle of superposition?

Answer: It states that when two or more waves overlap, the resultant displacement is the vector sum of the individual displacements.

Question: What is entropy?

Answer: Entropy is a measure of the disorder or randomness in a system.

Question: What is simple harmonic motion?

Answer: Simple harmonic motion is a type of oscillatory motion where the restoring force is directly proportional to displacement and acts in the opposite direction.

Question: What is the difference between AC and DC current?

Answer: AC current alternates direction periodically, while DC current flows in one direction.

Chemistry

Question: What is the atomic number?

Answer: The atomic number is the number of protons in the nucleus of an atom.

Question: Define valency.

Answer: Valency is the combining capacity of an element.

Question: What is Avogadro’s number?

Answer: Avogadro’s number is 6.022×10236.022 \times 10^{23}6.022×1023, representing the number of particles in one mole of a substance.

Question: What is the pH scale?

Answer: The pH scale measures the acidity or basicity of a solution, ranging from 0 to 14.

Question: Define isomerism.

Answer: Isomerism is the existence of compounds with the same molecular formula but different structures.

Question: What is an electrolyte?

Answer: An electrolyte is a substance that conducts electricity when dissolved in water.

Question: Define oxidation.

Answer: Oxidation is the loss of electrons during a chemical reaction.

Question: What are noble gases?

Answer: Noble gases are elements in Group 18 of the periodic table, known for their stability and lack of reactivity.

Question: What is a catalyst?

Answer: A catalyst is a substance that speeds up a chemical reaction without being consumed in the process.

Question: What is a mole in chemistry?

Answer: A mole is a unit representing 6.022×10236.022 \times 10^{23}6.022×1023 particles of a substance.

Question: What is the difference between exothermic and endothermic reactions?

Answer: Exothermic reactions release heat, while endothermic reactions absorb heat.

Question: Define isotopes.

Answer: Isotopes are atoms of the same element with different numbers of neutrons.

Question: What is the law of conservation of mass?

Answer: The law states that mass cannot be created or destroyed in a chemical reaction.

Question: What is a covalent bond?

Answer: A covalent bond is a chemical bond formed by the sharing of electron pairs between atoms.

Question: What are acids and bases?

Answer: Acids are substances that donate protons, while bases accept protons.

Question: Define molarity.

Answer: Molarity is the number of moles of solute per liter of solution.

Question: What is the periodic table?

Answer: The periodic table is a tabular arrangement of chemical elements based on their atomic numbers.

Question: What are alkali metals?

Answer: Alkali metals are elements in Group 1 of the periodic table, highly reactive with water.

Question: What is the difference between a mixture and a compound?

Answer: A mixture is a physical combination of substances, while a compound is a chemical combination of elements.

Question: What is electrolysis?

Answer: Electrolysis is a process of using electricity to break down a compound into its components.

Biology

Question: What is the cell theory?

Answer: Cell theory states that all living organisms are made of cells, and cells are the basic unit of life.

Question: What is photosynthesis?

Answer: Photosynthesis is the process by which green plants convert sunlight into chemical energy.

… (Continue with similar formats for Math and Computer Science).

Thorough preparation is key to excelling in BSc examinations. Practicing with a wide variety of questions from each subject not only strengthens your concepts but also boosts confidence. Make consistent efforts, understand each subject deeply, and revise regularly for the best resuts.