CBSE Class 10 Solutions, MCQ, Notes, Sample Papers & Syllabus

Short Questions Answer 1. What is an ecosystem? Answer: An ecosystem is a system formed by the interaction between living organisms and their physical environment. 2. Name two types of ecosystems. Answer: Natural and artificial (man-made). 3. What are producers? Answer: Green plants that make their own food by photosynthesis. 4. Who are decomposers? Answer: […]

Short Questions Answer 1. Who discovered the magnetic effect of electric current? Answer: Hans Christian Oersted discovered it in 1820. 2. What happens when an electric current passes through a conductor? Answer: It produces a magnetic field around the conductor. 3. What do magnetic field lines represent? Answer: They represent the direction and strength of […]

Short Questions Answer 1. What is meant by an electric circuit? Answer: A continuous and closed path of an electric current is called an electric circuit. 2. Define one ampere. Answer: One ampere is the current when one coulomb of charge flows through a conductor in one second. 3. What instrument is used to measure […]

Short Questions Answer 1. What is the function of the retina in the human eye? Answer: The retina is a light-sensitive membrane that receives images and sends electrical signals to the brain through the optic nerve. 2. What is the least distance of distinct vision for a normal human eye? Answer: The least distance of […]

Short Questions Answer 1. What is the principal focus of a concave mirror? Answer: The point on the principal axis where light rays parallel to it converge after reflection is called the principal focus of a concave mirror. 2. What is the relationship between focal length (f) and radius of curvature (R) of a spherical […]

Short Questions Answer 1. What is heredity? Answer: Transmission of traits from parents to offspring is called heredity. 2. Who is known as the Father of Genetics? Answer: Gregor Johann Mendel. 3. What are inherited traits? Answer: Traits or characteristics passed from parents to offspring. 4. What is variation? Answer: Differences between individuals of the […]

Short Questions Answer 1. What is the importance of DNA copying in reproduction? Answer: DNA copying ensures transfer of genetic information and body design from parents to offspring. 2. Why is variation beneficial to species? Answer: Variation helps species survive environmental changes and ensures evolution. 3. What is binary fission? Answer: It is a type […]

Short Questions Answer 1. What are receptors? Answer: Receptors are specialised tips of nerve cells that detect information from the environment. 2. What is a synapse? Answer: A synapse is the gap between two neurons where transmission of impulses occurs through chemicals. 3. Which part of the brain controls posture and balance? Answer: The cerebellum […]

Short Questions Answer 1. What are life processes? Answer: Life processes are the processes essential for maintaining life, such as nutrition, respiration, transportation, and excretion. 2. What is the source of energy for living organisms? Answer: The energy for living organisms comes from food. 3. What is autotrophic nutrition? Answer: It is a mode of […]

Short Questions Answer 1. What is catenation? Answer: The ability of carbon to form long chains and rings by bonding with other carbon atoms. 2. Why are most carbon compounds poor conductors of electricity? Answer: Because they are covalently bonded and do not contain ions. 3. What type of bond is formed in methane (CH₄)? […]

Short Questions Answer 1. What is malleability? Answer: The property of metals by which they can be beaten into thin sheets is called malleability. 2. Name a metal which is a liquid at room temperature. Answer: Mercury. 3. Which metal is the best conductor of heat? Answer: Silver. 4. What are amphoteric oxides? Answer: Metal […]

Short Questions Answer 1. What is the common name of sodium hydrogencarbonate? Answer: Baking soda. 2. What happens when an acid reacts with a metal? Answer: A salt and hydrogen gas are formed. 3. What is the pH of a neutral solution? Answer: 7. 4. Name one natural indicator. Answer: Litmus or turmeric. 5. What […]

Short Questions Answer 1. What is a chemical reaction? Answer: A process in which new substances with new properties are formed by the breaking and making of chemical bonds is called a chemical reaction. 2. What are reactants and products? Answer: Substances that undergo a chemical change are called reactants, and the new substances formed […]