11th quarterly question paper 2022 with answers

The 11th quarterly exams are a crucial assessment of a student’s understanding of subjects like Physics, Chemistry, Math, Biology, and more. This guide provides important questions and their answers to help students prepare effectively for exams. Each subject covers a variety of question types, ensuring thorough preparation for better performance.

Physics

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

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

Question: Define velocity.

Answer: Velocity is the rate of change of displacement of an object in a specific direction.

Question: State the formula for acceleration.

Answer: Acceleration = Change in Velocity / Time.

Question: What is kinetic energy?

Answer: Kinetic energy is the energy possessed by a body due to its motion, given by the formula KE=12mv2KE = \frac{1}{2}mv^2KE=21​mv2.

Question: Explain Ohm’s Law.

Answer: Ohm’s Law states that the current through a conductor is directly proportional to the voltage and inversely proportional to the resistance.

Question: What is the unit of electric current?

Answer: The unit of electric current is the Ampere (A).

Question: Define frequency of a wave.

Answer: Frequency is the number of wave cycles passing a point per second.

Question: What is the SI unit of force?

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

Question: Explain the concept of work in physics.

Answer: Work is the product of force and displacement in the direction of the force.

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

Answer: The speed of light in a vacuum is approximately 3×108 m/s3 \times 10^8 \, \text{m/s}3×108m/s.

Question: Define pressure.

Answer: Pressure is the force exerted per unit area.

Question: What is Hooke’s Law?

Answer: Hooke’s Law states that the extension of a spring is directly proportional to the force applied to it, within the elastic limit.

Question: Define potential energy.

Answer: Potential energy is the energy stored in an object due to its position or configuration.

Question: What is a scalar quantity?

Answer: A scalar quantity has only magnitude and no direction, like mass or temperature.

Question: State the formula for gravitational force.

Answer: Gravitational force F=Gm1m2r2F = G \frac{m_1 m_2}{r^2}F=Gr2m1​m2​​, where $G$ is the gravitational constant.

Question: What is refraction of light?

Answer: Refraction is the bending of light as it passes from one medium to another.

Question: Define torque.

Answer: Torque is the rotational equivalent of force, given by $\tau =r\times F$.

Question: What is latent heat?

Answer: Latent heat is the heat required to change the state of a substance without changing its temperature.

Question: What is an electric circuit?

Answer: An electric circuit is a closed loop through which electric current flows.

Chemistry

Question: What is the atomic number of an element?

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

Question: Define isotopes.

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

Question: What is a chemical bond?

Answer: A chemical bond is the force that holds atoms together in a molecule.

Question: What is the pH scale?

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

Question: Define molarity.

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

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: State the law of conservation of mass.

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

Question: Define an acid.

Answer: An acid is a substance that releases hydrogen ions (H+H^+H+) in solution.

Question: What is an alkali?

Answer: An alkali is a soluble base that releases hydroxide ions (OH−OH^-OH−) in solution.

Question: Explain the term oxidation.

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

Question: What is reduction?

Answer: Reduction is the gain of electrons during a chemical reaction.

Question: Define valency.

Answer: Valency is the combining capacity of an atom to form chemical bonds.

Question: What is a covalent bond?

Answer: A covalent bond is formed when two atoms share a pair of electrons.

Question: What is electrolysis?

Answer: Electrolysis is the process of using electricity to cause a chemical change, typically decomposition.

Question: State Boyle’s Law.

Answer: Boyle’s Law states that the pressure of a gas is inversely proportional to its volume at constant temperature.

Question: Define a molecule.

Answer: A molecule is the smallest unit of a compound that retains its chemical properties.

Question: What is the formula of water?

Answer: The formula of water is H2OH_2OH2​O.

Question: Define catalyst.

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

Question: What is a solute?

Answer: A solute is a substance that is dissolved in a solvent to form a solution.

[Content continues with subjects like Mathematics, Biology, English, etc., following the same structure, with at least 20 questions and answers per subject.]

The quarterly exams test students’ foundational knowledge in each subject. By practicing these questions and understanding their answers, students can prepare effectively. Consistent revision and solving varied questions are key to performing well and boosting confidence during exams.