CBSE Class 10 Sample Papers, Syllabus, Test Papers & NCERT Solutions

Chapter 1 Chemical Reactions and Equations Class 10 Notes Chapter 2 Acids Bases and Salts Class 10 Notes Chapter 3 Metals and Non-metals Class 10 Notes Chapter 4 Carbon and its Compounds Class 10 Notes Chapter 5 Periodic Classification of Elements Class 10 Notes Chapter 6 Life Processes Class 10 Notes Chapter 7 Control and Coordination Class 10 Notes Chapter 8 How do Organisms […]

Anything in the environment which can be used is called a natural resource. Natural Resources includes total natural environment that support human life and contribute to the production of necessities and comforts to mankind. So natural resources are the coihponents of atmosphere, hydrosphere and lithosphere. Types of Natural Resources: On the basis of abundance and availability, […]

Biodegradable and Non-biodegradable Wastes, Ecosystem, Components of Ecosystem. The environment includes our physical surroundings like air (or atmosphere), water bodies, soil (land and all the organisms such as plants, animals, human beings and micro-organisms like bacteria and fungi (called decomposers). The waste materials produced by the various activities of man £nd animals are poisonous to […]

Acids: Indicators, General characteristics, Properties of acids, Chemical nature of acids. Sources of Energy: A source of energy is that which is capable of providing enough useful energy at a steady rate over a long period of time. A Good source of energy should be : Safe and convenient to use, For example; energy nuclear can be […]

Magnet: Magnetic field and magnetic field lines, Magnetic field due to a current carrying conductor, Right hand thumb rule, Magnetic field due to current through a circular loop. Magnetic field due to current in a solenoid. Magnet is an object that attracts objects made of iron, cobalt and nickle. Magnet comes to rest in North – […]

Electricity: Electric current, electric circuit, voltage or electric potential, resistance and (Ohm’s law). Electric Current: The flow of electric charge is known as Electric Current, Electric current is carried by moving electrons through a conductor. By convention, electric current flows in the opposite direction to the movement of electrons. Electric Circuit: Electric circuit is a continuous and closed […]

Human Eye: working of human eye, Persistence of vision, Power of accommodation of human eye, Defects of vision. The Human Eye: It is a natural optical instrument which is used to see the objects by human beings. It is like a camera which has a lens and screen system. Structure of the Human Eye The various parts […]

REFLECTION Reflection of Light: The phenomenon of bouncing back of light into the same medium by the smooth surface is called reflection. Incident light: Light which falls on the surface is called incident light. Reflected light: Light which goes back after reflection is called reflected light. The angle of incidence: The angle between the incident ray and the normal. […]

Heredity and Inherited Traits: Mendel’s Experiment; Sex determination. Heredity refers to the transmission of characters from parents to offsprings. An inherited trait is a particular genetically determined feature that distinguishes a person from the others for example; attached or free ear lobes in human beings. Rules for the inheritance of traits: Mendel’s contribution: The rules for inheritance […]

Asexual Reproduction It involves only one parent. There is no formation and fusion of gametes. The young ones formed are almost identical to each other as well as to the parent cell. Asexual reproduction generally occurs during favourable environmental conditions and when there is an abundance of food. It is a faster method of reproduction. […]

Control and Co-ordination in Animals: Nervous system and endocrine system. In animals, the nervous system and hormonal system are responsible for control and co¬ordination. Receptors: Receptors are the specialized tips of the nerve fibres that collect the information to be conducted by the nerves. Receptors are in the sense organs of the animals. These are classified as […]

Nutrition in Plants and Animals – Life Processes Class 10 Notes Nutrition: The process by which an organism takes food and utilizes it, is called nutrition. Need for Nutrition: Organisms need the energy to perform various activities. The energy is supplied by the nutrients. Organisms need various raw materials for growth and repair. These raw materials are […]

“The periodic table is a tabular method of displaying the elements in such a way, that the elements having similar properties occur in the same vertical column or group”. Earlier attempts of the classification of elements: Dobereiner’s Triads, Newland’s law of octaves. Dobereiner’s Triads: This classification is based on the atomic mass. According to this, when […]

Bonding in Carbon: The Covalent bond, Electron dot structure, Physical properties of organic compounds, Allotropes of Carbon. Covalent Bond: The atomic number of carbon is 6. Its electronic configuration is 2, 4. It requires, 4 electrons to achieve the inert gas electronic configuration. But carbon cannot form an ionic bond It could gain four electrons forming C4- cation. […]

Metals: Physical properties of metals, chemical properties of metals and non-metal oxide. Metals are the elements that conduct heat and electricity and are malleable and ductile. Examples are Iron (Fe), Aluminium (Al), Silver (Ag), Copper (Cu), Gold (Au), Platinum (Pt), Lead (Pb), Potassium (K), Sodium (Na), Calcium (Ca) and Magnesium (Mg) etc. Metals are the elements […]

Indicators: Indicators are substances which indicate the acidic or basic nature of the solution by the colour change. Types of Indicator: There are many types of indicators. Some common types of indicators are: 1. Natural Indicators: Indicators obtained from natural sources are called Natural Indicators. Litmus, turmeric, red cabbage, China rose, etc., are some common natural indicators used […]