CBSE Class 10 Chemistry Chapter 4: Carbon and its Compounds. Carbon, in all its allotropic forms, burns in oxygen to give carbon dioxide along with the release of heat and light. Saturated hydrocarbons will generally give a clean flame while unsaturated carbon compounds will give a yellow flame with lots of black smoke. This is demonstrated with some examples.
CBSE Class 10 Chemistry Chapter 4: Carbon and its Compounds. Properties of the commercially important compound – ethanol (alcohol). The reaction of ethanol with sodium is demonstrated.
CBSE Class 10 Chemistry Chapter 4: Carbon and its Compounds. Ethanoic acid is a carbon compound. Properties of ethanoic acid – Esterification reaction. Preparation of ester is demonstrated in this video.
CBSE Class 10 Chemistry Chapter 4: Carbon and its Compounds. This activity demonstrates the effect of soap in cleaning with hard water and soft water.
CBSE Class 10 Chemistry Chapter 4: Carbon and its Compounds. What is Covalent bond and types of covalent bonds? This is demonstrated with hydrogen, oxygen, nitrogen and methane.
CBSE Class 10 Chemistry Chapter 4: Carbon and its Compounds. The element carbon occurs in different forms in nature with widely varying physical properties. Both diamond and graphite are formed by carbon atoms, the difference lies in the manner in which the carbon atoms are bonded to one another. Fullerene is another allotrope of carbon.
CBSE Class 10 Chemistry Chapter 4: Carbon and its Compounds. What are saturated and unsaturated carbon compounds? The bond formation to satisfy valence electrons. This is explained with some examples.
CBSE Class 10 Biology Chapter 6: Life Processes. Respiration in human beings is explained with details of gas exchanges in the alveolar sacs.
CBSE Class 10 Biology Chapter 6: Life Processes. The human heart is a pumping organ to push blood around the body It is a muscular organ which is as big as our fist The details of the heart are explained in the video with clear demonstrations of different parts.
CBSE Class 10 Biology Chapter 6: Life Processes. The excretory system of human beings includes a pair of kidneys, a pair of ureters, a urinary bladder and a urethra. Details of the excretion are explained in the video.
CBSE Class 10 Biology Chapter 6: Life Processes. Carbon and energy requirements of the autotrophic organism are fulfilled by photosynthesis. Photosynthesis is a autotrophic nutrition in plants and it is explained in the video.
CBSE Class 10 Biology Chapter 6: Life Processes. Nutrition in human beings: Human digestive system – The alimentary canal is a long tube extending from the mouth to the anus. The food from the mouth is converted to energy through this canal. This is explained in detail.
CBSE Class 10 Biology Chapter 7: Control and Coordination. The response of the plant to the direction of light is demonstrated in the video with the help of a plant taken in a pot.
CBSE Class 10 Biology Chapter 7: Control and Coordination. What is geotropism? How does it work? This is explained with a demonstration.
CBSE Class 10 Biology Chapter 7: Control and Coordination. What are the different Endocrine glands in human beings? Some of the endocrine glands are explained along with the hormones secreted by them and functions.
CBSE Class 10 Biology Chapter 7: Control and Coordination. In animals, such control and coordination are provided by nervous and muscular tissues. The nervous system in a human being is explained with the details.
CBSE Class 10 Biology Chapter 7: Control and Coordination. What happens in Reflex Actions? What happens somebody pricks with a needle. This is demonstrated with details.
CBSE Class 10 Biology Chapter 7: Control and Coordination. Is reflex action the only function of the spinal cord? Obviously not, since we know that we are thinking beings. The spinal cord is made up of nerves which supply information to think about. Thinking involves more complex mechanisms and neural connections. These are concentrated in the brain, which is the main coordinating centre of the body. The brain and spinal cord constitute the central nervous system.
CBSE Class 10 Biology Chapter 9: Heredity and Evolution. When we try to follow evolutionary relationships, how do we identify characteristics as common? These characteristics in different organisms would be similar because they are inherited from a common ancestor. Homologous and analogous characteristics are explained in this video.
CBSE Class 10 Biology Chapter 9: Heredity and Evolution. What are fossils? Preserved traces of living organisms are called fossils. Some of these are explained with demonstrations.