CURRENT Current is the rate of flow of an electric charge. If âqâ is the charge (in coulomb) and âtâ is the time (in seconds) then, Current (I) = q/t S.I unit of current = Ampere (A) Current is a scalar quantity. CIRCUIT It is the arrangement that shows how different component in a circuit […]
Tag: Class 10 CBSE science notes
HUMAN EYE The front part of the eye is covered by a transparent spherical membrane. called cornea Light enters the eye through cornea and the space behind the cornea is filled with a liquid called aqueous humour. Just behind the cornea there is a dark coloured muscular diaphragm called iris which has a small circular […]
HEREDITY AND EVOLUTION Some time a question must have come in your mind that why I am similar to my father and my brother/sister and similar to my mother. But if a field of wheat crop all plants look similar, very less variation can be seen in plants of a crop field. Variation are generally […]
The processes that occur to maintain life in a living being are called life processes. This includes nutrition, movement, growth, oxidation of food, breathing, excretion, control and coordination and finally reproduction. Multicellular organisms have specialized organs to perform all these different functions, they have well organized structures such as tissues, organs and organ systems. These […]
BONDING IN CARBON: COVALENT BOND â The atomic number of carbon is 6. Itâs electronic configuration is 2, 4. It requires 4e– to achieve the inert gas electronic configuration. But carbon cannot form an ionic bond because it could gain 4e– forming C-4 anion. But it would be difficult for the nucleus with six protons […]
There are about 115 elements. Based on their properties they have been classified into: â METALSâ NON â METALSâ METALLOIDS METALS: the elements which are present on the left hand side of theperiodic table. They have 1, 2 or 3 valence electrons and loose electron to form positively charged ions called cations. Hence they are called […]
INDICATORS: It is a substance or a dye which tells us whether the given substance is acid or base by changing its colour. LITMUS: most common indicator. Natural colour is purple. Acids turn blue litmus red. Bases turn red litmus blue. Obtained from litmus (symbolic association between algae and fungi.) TURMERIC: it is a yellow […]
Sheet Digest 