NCERT Class 10 Science Most Important Questions Answers For Board Examination 2025 1. Name a metal/non-metal (a) Carbon makes iron hard and strong (used in steel alloys). (b) Mercury is alloyed with other metals to form amalgam. (c) Zinc is used to galvanize iron articles. (d) Silver forms a black coating (silver sulfide) when exposed … Read more
CBSE Class 10 Science Notes Chapter 16 Management of Natural Resources CBSE Class 10 Science Notes: Chapter 16 – Management of Natural Resources Resource Conservation: Sustainable use of resources ensures that future generations can meet their needs. This involves reducing, reusing, and recycling materials. Forest Resources: Forests play an essential role in maintaining ecological balance. … Read more
CBSE Class 10 Science Notes Chapter 15 Our Environment CBSE Class 10 Science Chapter 15: Our Environment – Notes Ecosystem: It consists of biotic (living) and abiotic (non-living) components. Energy flow in an ecosystem follows a food chain or web. Producers (plants) are eaten by consumers (herbivores, carnivores), and decomposers break down dead organisms. Environmental … Read more
CBSE Class 10 Science Notes Chapter 14 Sources of Energy CBSE Class 10 Science Notes – Chapter 14: Sources of Energy Types of Energy Sources: Renewable sources: Can be replenished, such as solar, wind, hydro, geothermal, and biomass. Non-renewable sources: Finite resources like coal, petroleum, and natural gas. Conventional vs. Non-conventional Energy: Conventional: Coal, oil, … Read more
CBSE Class 10 Science Notes Chapter 13 Magnetic Effects of Electric Current CBSE Class 10 Science Notes – Chapter 13: Magnetic Effects of Electric Current Magnetic Field and Force: Electric current produces a magnetic field. The magnetic field around a current-carrying conductor can be demonstrated using a compass. Right-Hand Rule: The direction of the magnetic … Read more
CBSE Class 10 Science Notes Chapter 12 Electricity CBSE Class 10 Science Notes – Chapter 12: Electricity Electric Current: The flow of electric charge through a conductor, measured in amperes (A). It’s caused by the movement of electrons. Potential Difference: The difference in electric potential energy between two points, measured in volts (V). It drives … Read more
CBSE Class 10 Science Notes Chapter 11 Human Eye and Colourful World Human Eye: The human eye consists of the cornea, iris, pupil, lens, retina, and optic nerve. Eye defects include myopia (nearsightedness) and hypermetropia (farsightedness). Myopia is corrected with concave lenses, while hypermetropia is corrected with convex lenses. Power of accommodation: The ability of … Read more
CBSE Class 10 Science Notes Chapter 10 Light Reflection and Refraction CBSE Class 10 Science Notes: Chapter 10 – Light: Reflection and Refraction Reflection of Light: When light strikes a smooth surface, it bounces back. This is called reflection. Law of Reflection: Angle of incidence = Angle of reflection. Types of reflection: Regular (mirror) and … Read more
CBSE Class 10 Science Notes Chapter 9 Heredity and Evolution Heredity: The passing of traits from parents to offspring. It is governed by genes located on chromosomes. The basic unit of heredity is the gene. Mendel’s Laws of Inheritance: Gregor Mendel’s experiments with pea plants led to the formulation of inheritance laws, including the Law … Read more
CBSE Class 10 Science Notes Chapter 8 How do Organisms Reproduce CBSE Class 10 Science Notes: Chapter 8 – How do Organisms Reproduce? Key Concepts Reproduction: The process by which organisms produce offspring for the continuity of species. Types: Asexual Reproduction: Single parent, identical offspring. Sexual Reproduction: Two parents, genetic variation. Asexual Reproduction Methods: Fission: … Read more