IPU Last Year Question Paper Overview and Answers

IPU last year question paper serves as a guide for students preparing for exams under Guru Gobind Singh Indraprastha University. It provides subject-wise questions and answers to improve knowledge and practice. The content includes detailed Q&A for various subjects like Physics, Chemistry, Mathematics, and more, offering valuable insights and practice material.

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IPU Last Year Question Paper: Questions and Answers

Physics

Question: What is the first law of thermodynamics?

Answer: The first law of thermodynamics states that energy can neither be created nor destroyed; it can only change from one form to another.

Question: Define Newton’s second law of motion.

Answer: Newton’s second law of motion states that the force acting on an object is equal to the mass of the object multiplied by its acceleration.

Question: What is the difference between scalar and vector quantities?

Answer: Scalar quantities have only magnitude, while vector quantities have both magnitude and direction.

Question: Explain the concept of potential energy.

Answer: Potential energy is the energy possessed by an object due to its position or configuration, such as a stretched spring or an object at height.

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 the principle of conservation of momentum.

Answer: The principle of conservation of momentum states that the total momentum of a closed system remains constant if no external forces act on it.

Question: What is 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: Explain the concept of refraction of light.

Answer: Refraction of light occurs when a light wave passes from one medium to another, changing its speed and direction.

Question: What is meant by the term ‘blackbody radiation’?

Answer: Blackbody radiation refers to the electromagnetic radiation emitted by a perfect black body, which absorbs all incident radiation.

Question: Define centripetal force.

Answer: Centripetal force is the force required to make an object move in a circular path, directed toward the center of the circle.

Question: What is the unit of electric current?

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

Question: Explain the Doppler Effect.

Answer: The Doppler Effect is the change in frequency or wavelength of a wave in relation to an observer moving relative to the source of the wave.

Question: Define the term ‘resonance.’

Answer: Resonance is the phenomenon in which a vibrating system or external force drives another system to oscillate with greater amplitude at a specific frequency.

Question: What is the difference between a convex and a concave lens?

Answer: A convex lens converges light rays to a focal point, while a concave lens diverges light rays away from a focal point.

Question: Explain Ohm’s Law.

Answer: Ohm’s Law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

Question: What is meant by electromagnetic induction?

Answer: Electromagnetic induction is the process of generating an electromotive force (EMF) across a conductor when it is exposed to a changing magnetic field.

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: What is a semiconductor?

Answer: A semiconductor is a material with electrical conductivity between that of a conductor and an insulator, often used in electronic devices.

Question: Explain the difference between AC and DC current.

Answer: AC (Alternating Current) changes its direction periodically, while DC (Direct Current) flows in a single direction.

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Chemistry

Question: What is the periodic table?

Answer: The periodic table is a tabular arrangement of chemical elements, organized by increasing atomic number, electron configuration, and recurring properties.

Question: Define isotopes.

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

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 atoms or molecules in one mole of a substance.

Question: What is a chemical bond?

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

Question: Define pH scale.

Answer: The pH scale measures the acidity or alkalinity of a solution, ranging from 0 (most acidic) to 14 (most basic), with 7 being neutral.

Question: What are acids and bases?

Answer: Acids are substances that release hydrogen ions (H⁺) in a solution, while bases release hydroxide ions (OH⁻).

Question: What is a catalyst?

Answer: A catalyst is a substance that increases the rate of a chemical reaction without undergoing any permanent chemical change.

Question: Explain the difference between endothermic and exothermic reactions.

Answer: Endothermic reactions absorb heat from the surroundings, while exothermic reactions release heat.

Question: What is 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 oxidation and reduction.

Answer: Oxidation is the loss of electrons, while reduction is the gain of electrons.

Question: What is an ionic bond?

Answer: An ionic bond is a chemical bond formed between two ions with opposite charges through the transfer of electrons.

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 the term ‘electrolysis.’

Answer: Electrolysis is a process that uses electricity to cause a chemical reaction, typically decomposition.

Question: What is the molar mass of water?

Answer: The molar mass of water (H₂O) is 18 grams per mole.

Question: What is meant by empirical formula?

Answer: The empirical formula represents the simplest whole-number ratio of atoms in a compound.

Question: What is a homologous series?

Answer: A homologous series is a group of organic compounds with the same functional group but differing by a CH₂ unit.

Question: What is the chemical formula of common salt?

Answer: The chemical formula of common salt is NaCl (sodium chloride).

Question: What is the difference between a solution and a suspension?

Answer: A solution is a homogeneous mixture of two or more substances, while a suspension is a heterogeneous mixture where particles settle over time.

Question: What is the significance of a balanced chemical equation?

Answer: A balanced chemical equation ensures the law of conservation of mass is upheld by showing equal numbers of atoms for each element on both sides of the equation.

IPU last year question papers are a useful resource for exam preparation, covering key subjects with diverse questions and answers. These questions enhance conceptual clarity and problem-solving skills. Using them for practice helps students excel in their exams by reinforcing theoretical knowledge and improving time managemen