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Nuclear Fission:
Splitting the Atom You know that atoms are made up of a nucleus and electrons moving around the nucleus, and the nucleus is made up of protons and neutrons. The principal actor in the fission drama is the uranium atom. The nucleus of the Uranium 238 atom has 92 protons and 146 neutrons. About one atom in 140 atoms of uranium has 143 neutrons in its nucleus. lt is called Uranium 235. It is the Uranium 235 that is mostly used to provide fuel for nuclear furneces. Before the Second World War, two German scientists discovered that if neutrons were shot at the nuclei of Uranium 235, the nuclei split into two and produced other neutrons to repeat the process. This is called nuclear fission.
Q.How are clouds formed? During day time, on being heated, a large amount of water evaporates from various water bodies and goes into the air. A part of this water vapour also r
Pulses Pulses are the edible fruit or seed of pod-bearing plants and are widely grown throughout the world. They have a high protein content ranging from 20-40%, which makes th
Poisonous and Infectious Substances : These are the substances liable to cause death or serious injuries to health, if swallowed or inhaled or allowed to come in contact with skin
Explain the process of Freezing Freezing, as a method, is the easiest, most convenient and least time-consuming way of preserving foods. Freezing does not sterilize foods or d
Explain Cytoplasmic Vacuoles Figure illustrates the structure of vacuoles. These are the voids in the cytoplasm which store small molecules such as water, ions, sucrose and am
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Starch is not soluble in water ?? It forms colloid in aqueous medium called as micelles. Iodine reacts with both amylose and amylopectin, but the former produces a co
pour plate and direct microscope count
Carbon dioxide has been surmised as an significant component in ceasing the last Ice Age, but its precise function has always been indecipherable as rising temperatures pondered in
Explain ABO Blood Grouping System As the name suggest, this is based on the presence or absence of 9 antigens A and B, on the surface of RBC. If either of these antigens is pr
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