The cell, the basic unit of life, was first discovered by Robert Hooke in 1665 while observing a cork slice under a microscope he designed. The term “cell” comes from the Latin word meaning “a little room.” A typical cell consists of three main parts: Cell (Plasma) Membrane – the selectively permeable outer boundary, made of […]
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Is Matter Around Us Pure? A pure substance is made up of only one type of particle and has uniform composition and properties. Common examples include sodium chloride and sugar. A mixture is a combination of two or more substances, where the individual components retain their own properties. Examples include air, soil, and sea water.
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Matter Everything in the universe is made of matter, which occupies space and has mass — meaning it has both mass and volume. Scientists classify matter into two types based on physical properties and chemical nature. Characteristics of Particles of Matter: Particles have space between them and are in continuous motion. When temperature rises, their
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Work Energy And Power Work – when a force is applied to an object and object moves in direction of force. Formula: Work = Force × Distance × cos(θ), Unit: Joules (J) Energy – The capacity to do work. There are many forms (kinetic, potential, thermal, etc.). Unit: Joules (J) Power – The rate at
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Physics Practice Questions – Unit and Measurement We keep updating questions here from time to time. Please visit this page every alternate day. Q1. In the following which is the fundamental physical quantity ? (a) Force (b) Velocity (c) Electric Current (d) Work Q2. The Unit of electric power is – (a) Joule (b) Volt (c)
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General Science Notes – Question and Answer Related Links General Science Practice Question General Science Multiple Choice Questions (MCQ Quiz) General Science, Study Materials, Current Affairs, Practice Questions,
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Biology Notes and Question Subbranches of Biology Biological Evolution Taxonomy Cell Heredity Biofertilizers Human Anatomy and Physiology (1) Skeletal and Muscular System (II) Digestive System (III) Vitamins and Nutrition (IV) Respiratory System (V) Circulatory System (VI) Excretory System (VII) Nervous System (VIII) Endocrine System (IX) Reproduction and Embryonic Development Plant Physiology (1) Photosynthesis (II) Plant
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Chemistry Notes and Question Atomic structure Chemical and physical changes, solutions etc. Inorganic Chemistry Metals, minerals, ores Properties, uses Alloys Non-metals A. Carbon and its different forms B. Hydrogen and its compounds C. Sulphur, nitrogen, halogens, inert gases D. Acids, bases and salts Organic Chemistry A. Hydrocarbons B. Alcohols C. Polymers D. Organic acids E.
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Physics Notes and Question Unit and Measurement Physics Practice Questions – Unit and Measurement | Q&A Measuring instruments and scales Mechanics Motion under gravity Properties of bulk substances Light Heat and thermodynamics Wave motion Sound Electric current Conductivity Nuclear physics Computer and information technology Space technology Defence technology Important scientists and inventions Related Links General
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General Science | Practice Questions 01 We keep updating questions here from time to time. Please visit this page every alternate day. Q1. Moss and Marchantia comes under which of the following ? [SSC GD 2022] (a) Algae (b) Gymnosperms (c) Pteridophytes (d) Bryophytes Q2. Identify a way to reduce the pollution caused due to burning
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