NEET PYQ: Practice Essential Questions and Answers

NEET PYQ provides essential questions and answers for exam preparation. Practice questions from all subjects to improve your score.

---

---

NEET PYQ (National Eligibility cum Entrance Test Previous Year Questions) is an important tool for students preparing for the medical entrance exam. By solving the past year questions, students get a clear understanding of the exam pattern, types of questions asked, and the areas that require more focus. These questions serve as a great resource to test your knowledge and assess your preparation level. It helps you boost your confidence and identify topics you need to revise thoroughly before the exam. This article provides a collection of previous year questions and their answers from all the subjects, so you can practice and improve your skills.

---

Physics

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

Question: What is the formula for gravitational force?
Answer: The formula for gravitational force is F = G * (m1 * m2) / r².

Question: What is Ohm’s Law?
Answer: Ohm’s Law states that V = IR, where V is the voltage, I is the current, and R is the resistance.

Question: Define the term 'acceleration'.
Answer: Acceleration is the rate at which an object changes its velocity with respect to time.

Question: What is the principle behind a rocket propulsion?
Answer: The principle behind rocket propulsion is Newton's third law of motion, which states that for every action, there is an equal and opposite reaction.

Question: What is the speed of light in vacuum?
Answer: The speed of light in vacuum is 3 × 10^8 m/s.

Question: What is the unit of electric charge?
Answer: The SI unit of electric charge is the Coulomb (C).

Question: What is a transverse wave?
Answer: A transverse wave is a wave in which the oscillations are perpendicular to the direction of the wave's advance.

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

Question: What is the law of conservation of energy?
Answer: The law of conservation of energy states that energy can neither be created nor destroyed; it can only be transformed from one form to another.

Question: Define the term 'work'.
Answer: Work is done when a force is applied to an object, and the object moves in the direction of the force.

Question: What is refraction of light?
Answer: Refraction is the bending of light as it passes from one medium to another with a different refractive index.

Question: What is the difference between speed and velocity?
Answer: Speed is the rate of motion, while velocity is the rate of motion in a specific direction.

Question: What is the function of a concave lens?
Answer: A concave lens diverges light rays that are passing through it.

Question: What is the electric field?
Answer: An electric field is a region around a charged particle within which other charged particles experience a force.

Question: What is the energy stored in a capacitor?
Answer: The energy stored in a capacitor is given by the formula U = ½ C V², where C is capacitance and V is voltage.

Question: What is the formula for potential energy?
Answer: The formula for gravitational potential energy is PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Question: Define the term 'heat capacity'.
Answer: Heat capacity is the amount of heat required to raise the temperature of an object by one degree Celsius.

Question: What is the difference between elastic and inelastic collisions?
Answer: In elastic collisions, both momentum and kinetic energy are conserved. In inelastic collisions, only momentum is conserved, and kinetic energy is lost.

Question: What is the principle of working of an electric motor?
Answer: An electric motor works on the principle of the force experienced by a current-carrying conductor in a magnetic field.

---

Chemistry

Question: What is an atom?
Answer: An atom is the smallest unit of an element, consisting of a nucleus surrounded by electrons.

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: What is the difference between an ionic bond and a covalent bond?
Answer: An ionic bond is formed by the transfer of electrons, while a covalent bond is formed by the sharing of electrons.

Question: What is the law of definite proportions?
Answer: The law of definite proportions states that a given chemical compound always contains the same elements in the same proportion by mass.

Question: What is the pH scale?
Answer: The pH scale measures the acidity or basicity of a solution. It ranges from 0 to 14.

Question: What is an acid?
Answer: An acid is a substance that donates protons (H⁺ ions) in a chemical reaction.

Question: What is a base?
Answer: A base is a substance that accepts protons or donates hydroxide ions (OH⁻) in a chemical reaction.

Question: What is the mole concept?
Answer: The mole concept is a way of counting particles at the atomic or molecular scale. One mole is 6.022 × 10²³ particles.

Question: What is Avogadro’s number?
Answer: Avogadro’s number is 6.022 × 10²³, which represents the number of atoms, molecules, or particles in one mole of a substance.

Question: What is the difference between exothermic and endothermic reactions?
Answer: In exothermic reactions, energy is released, while in endothermic reactions, energy is absorbed.

Question: What is the periodic law?
Answer: The periodic law states that the properties of elements are a periodic function of their atomic numbers.

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

Question: What is the molecular formula of methane?
Answer: The molecular formula of methane is CH₄.

Question: What is the role of a catalyst in a chemical reaction?
Answer: A catalyst speeds up a chemical reaction without being consumed in the process.

Question: What is the formula for calculating molarity?
Answer: Molarity (M) is calculated using the formula M = moles of solute / liters of solution.

Question: What is the difference between a strong acid and a weak acid?
Answer: A strong acid dissociates completely in water, while a weak acid only partially dissociates.

Question: What is a redox reaction?
Answer: A redox reaction is a type of chemical reaction in which the oxidation states of atoms are changed through the transfer of electrons.

Question: What is the function of an electrolyte in a cell?
Answer: An electrolyte is a substance that allows the flow of ions and conducts electricity in a cell.

Question: What is the concept of electronegativity?
Answer: Electronegativity is the ability of an atom to attract electrons in a chemical bond.

Question: What is the difference between an empirical and molecular formula?
Answer: The empirical formula shows the simplest whole-number ratio of elements, while the molecular formula shows the actual number of atoms of each element in a molecule.

---

Biology

Question: What is the basic unit of life?
Answer: The basic unit of life is the cell.

Question: What is DNA?
Answer: DNA (Deoxyribonucleic Acid) is the molecule that carries genetic information.

Question: What is photosynthesis?
Answer: Photosynthesis is the process by which green plants use sunlight to synthesize foods from carbon dioxide and water.

Question: What is the role of mitochondria?
Answer: Mitochondria are the powerhouses of the cell, responsible for energy production.

Question: What are the two main types of cell division?
Answer: The two main types of cell division are mitosis and meiosis.

Question: What is the function of red blood cells?
Answer: Red blood cells carry oxygen from the lungs to the rest of the body and return carbon dioxide.

Question: What is immunity?
Answer: Immunity is the body's ability to resist infections and harmful substances.

Question: What are enzymes?
Answer: Enzymes are proteins that speed up biochemical reactions.

Question: What is the structure of a neuron?
Answer: A neuron consists of the cell body, dendrites, and axon, and is responsible for transmitting nerve impulses.

Question: What is the difference between a herbivore and a carnivore?
Answer: Herbivores feed on plants, while carnivores feed on other animals.

Question: What is the function of chlorophyll?
Answer: Chlorophyll is a pigment in plants that absorbs light energy for photosynthesis.

Question: What is genetic variation?
Answer: Genetic variation refers to differences in DNA sequences among individuals in a population.

Question: What are the main components of blood?
Answer: The main components of blood are red blood cells, white blood cells, platelets, and plasma.

Question: What is the circulatory system?
Answer: The circulatory system is responsible for the transport of blood, nutrients, gases, and waste products throughout the body.

Question: What is the role of the kidney?
Answer: The kidneys filter waste products from the blood and regulate water and salt balance in the body.

Question: What is the difference between mitosis and meiosis?
Answer: Mitosis results in two identical daughter cells, while meiosis results in four genetically diverse gametes.

Question: What is the function of the lymphatic system?
Answer: The lymphatic system helps defend against infection and maintains fluid balance in the body.

Question: What is the role of the nervous system?
Answer: The nervous system controls and coordinates body functions and responds to external stimuli.

Question: What are vaccines?
Answer: Vaccines are substances that stimulate the immune system to fight infections without causing the disease.

Question: What is the process of digestion?
Answer: Digestion is the breakdown of food into smaller molecules that can be absorbed and used by the body.

---