Chapter 16: Management of Natural Resources 1. Introduction Anything in the environment which can be used is called a natural resource. Management of natural resources refers to controlling the use of resources to avoid wastage and maximize effectiveness. Ganga Action Plan (GAP) was initiated to reduce the pollution load of river Ganga by more than … Read more
14. SOURCES OF ENERGY Characteristics of a good fuel: High calorific value Less smoke Less residue after burning Easy availability Inexpensive Easy to store and transport Fossil fuels: Were formed millions of years ago, when plants and animal remains got buried under the earth and were subjected to high temperature and pressure conditions. E.g.: Coal, … Read more
The Human Eye and the Colourful World 1. The Human Eye The human eye is a natural optical instrument used for vision. It functions similarly to a camera with a lens and screen system. Retina: Light-sensitive screen inside the eye where the image is formed, containing rods and cones. Cornea: Thin membrane covering the eyeball, … Read more
Heredity and Evolution 1. Heredity The transmission of characters from parent to their offspring is known as heredity. The study of heredity and variations is known as genetics. Clones are organisms that are carbon copies of one another. Variation in sexually reproducing organisms is caused due to factors like environment, crossing over, recombination of genes, … Read more
Diversity in Living Organisms 1. Reproduction The production of new organisms from existing organisms of the same species is known as reproduction. 2. Asexual Reproduction Modes of asexual reproduction used are: Binary fission Multiple fission Budding Spore formation Regeneration Vegetative propagation Tissue culture Fragmentation 3. Sexual Reproduction In sexual reproduction, a male gamete (germ cell) … Read more
Control and Coordination Animals- Nervous System: Nervous system is the organ system present in the animals to control and coordinate different activities of the body. Nervous system comprises of the brain, the spinal cord, and a huge network of nerves that are spread throughout the body. The nervous system is responsible for sending, receiving and … Read more
Chapter 6: Life Processes Life Processes The processes that are necessary for an organism to stay alive. Eg. Nutrition, respiration, etc. Criteria of Life Growth Movement Nutrition The process in which an organism takes in food, utilizes it to get energy, for growth, repair and maintenance, etc. and excretes the waste materials from the body. … Read more
Properties of Acids: Produce hydrogen ions [H+] in H2O. Sour taste. Turn blue litmus red. Act as electrolytes in Solution. Neutralize solutions carrying hydroxide ions. React with several metals releasing Hydrogen gas. React with carbonates releasing CO2 (g) Destroy body tissues. Corrode metal surface quickly. On the basis of origin, acids are classified as: a. … Read more
In this article, we quick revise the chapter Acids, Bases and Salts of Class 10 Science CBSE with pointwise cover all the topic Acids, Bases and Salts Quick Revision Notes 1. An acid may be defined as a substance that releases H⁺ ions in an aqueous solution. 2. A base may be defined as a … Read more
In this article, we can Differentiate between inhalation and exhalation of Class 10 Science Chapter Life Processes with a full detailed explanation Inspiration or Inhalation: It is bringing of fresh air into lungs for exchange of gases. During inhalation. thoracic cavity enlarges due to two types of inspiratory muscles, phrenic and external intercostals, Phrenic muscles … Read more