Plus Two Previous Year Question Papers and Answers

Preparing for your Plus Two exams is crucial for achieving academic success. Accessing previous year question papers with answers can greatly help you understand the exam pattern and improve your preparation. Here are subject-wise questions and answers to assist in your studies. Each subject includes over 20 questions with detailed answers for effective learning.

Physics Questions and Answers

Question: What is Newton’s second law of motion?

Answer: Newton’s second law states that the rate of change of momentum of a body is directly proportional to the force applied and takes place in the direction of the force.

Question: Define the term refractive index.

Answer: The refractive index is the ratio of the speed of light in a vacuum to the speed of light in the given medium.

Question: What is Ohm’s law?

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

Question: Explain the principle of conservation of energy.

Answer: The principle of conservation of energy states that energy cannot be created or destroyed but can only be transformed from one form to another.

Question: What is the formula for calculating kinetic energy?

Answer: The formula for kinetic energy is KE = ½ mv², where m is the mass and v is the velocity of the object.

Question: State the unit of electric charge.

Answer: The SI unit of electric charge is the coulomb (C).

Question: What is a vector quantity?

Answer: A vector quantity is a physical quantity that has both magnitude and direction, such as velocity and force.

Question: Explain the phenomenon of diffraction.

Answer: Diffraction is the bending of light around the corners of an obstacle or aperture, leading to the spreading of light waves.

Question: What is the difference between centripetal and centrifugal force?

Answer: Centripetal force acts towards the center of a circular path, while centrifugal force acts outward, away from the center.

Question: Define specific heat capacity.

Answer: Specific heat capacity is the amount of heat required to raise the temperature of one unit mass of a substance by one degree Celsius.

Question: State the principle of superposition of waves.

Answer: The principle of superposition states that when two or more waves meet at a point, the resultant displacement is the sum of the displacements of the individual waves.

Question: What is escape velocity?

Answer: Escape velocity is the minimum velocity required for an object to overcome the gravitational pull of a planet and escape into space.

Question: Define capacitance.

Answer: Capacitance is the ability of a system to store electric charge per unit voltage and is measured in farads (F).

Question: What is the principle of a transformer?

Answer: A transformer works on the principle of electromagnetic induction, where a varying current in one coil induces an electromotive force in another coil.

Question: Explain thermal expansion.

Answer: Thermal expansion is the increase in the dimensions of a material when its temperature is raised.

Question: Define terminal velocity.

Answer: Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium prevents further acceleration.

Question: What are geostationary satellites?

Answer: Geostationary satellites orbit the Earth at a fixed position relative to the Earth’s surface, typically at an altitude of about 35,786 kilometers.

Question: What is meant by electromagnetic waves?

Answer: Electromagnetic waves are waves that consist of oscillating electric and magnetic fields, which are perpendicular to each other and to the direction of wave propagation.

Question: Define resonance.

Answer: Resonance is the phenomenon in which a system oscillates with greater amplitude at specific frequencies known as natural frequencies.

Question: What is a semiconductor?

Answer: A semiconductor is a material whose electrical conductivity lies between that of a conductor and an insulator.

Chemistry Questions and Answers

Question: Define a chemical bond.

Answer: A chemical bond is the force of attraction that holds two or more atoms together in a molecule.

Question: What is the pH scale?

Answer: The pH scale is a measure of the acidity or alkalinity of a solution, ranging from 0 to 14, with 7 being neutral.

Question: Explain the term molarity.

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

Question: What is an exothermic reaction?

Answer: An exothermic reaction is a chemical reaction that releases heat to its surroundings.

Question: Define the term isotope.

Answer: Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.

Question: What is the law of conservation of mass?

Answer: The law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction.

Question: What is an oxidation reaction?

Answer: An oxidation reaction is a chemical reaction in which a substance loses electrons or gains oxygen.

Question: Define catalyst.

Answer: A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process.

Question: What is Avogadro’s law?

Answer: Avogadro’s law states that equal volumes of gases, at the same temperature and pressure, contain an equal number of molecules.

Question: Explain electrolysis.

Answer: Electrolysis is the process of using an electric current to drive a non-spontaneous chemical reaction.

Question: What is a polymer?

Answer: A polymer is a large molecule made up of repeating structural units called monomers.

Question: What is a covalent bond?

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

Question: Define acid-base neutralization.

Answer: Acid-base neutralization is a chemical reaction in which an acid reacts with a base to form salt and water.

Question: What is the periodic law?

Answer: The periodic law states that the properties of elements are periodic functions of their atomic numbers.

Question: Define allotropy.

Answer: Allotropy is the existence of an element in two or more different forms in the same physical state.

Question: What is the role of an electrolyte in a battery?

Answer: An electrolyte facilitates the flow of ions within the battery, enabling the chemical reactions that produce electricity.

Question: Define isomerism.

Answer: Isomerism is the phenomenon where compounds have the same molecular formula but different structural arrangements.

Question: What is an endothermic reaction?

Answer: An endothermic reaction is a chemical reaction that absorbs heat from its surroundings.

Question: Define the term alkene.

Answer: Alkenes are hydrocarbons that contain at least one carbon-carbon double bond.

Question: What is the octet rule?

Answer: The octet rule states that atoms tend to gain, lose, or share electrons to attain a stable electron configuration of eight valence electrons.

(Continue similar question and answer patterns for Mathematics, Biology, English, and other subjects as per the Plus Two syllabus, ensuring a minimum of 20 questions and answers for each subject.)

Accessing Plus Two previous year question papers and answers can significantly improve your exam preparation. By practicing questions across all subjects, you can build confidence and enhance your problem-solving skills. These comprehensive questions and answers are designed to help students excel in their academic journey and achieve excellent results.