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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. What are the different states in which water is found during the water cycle? During the water cycle, water is found in solid state (snow, ice, etc.), liquid state (ground wa
Define Ishihara's Charts - Colour Blindness Colour blindness is often assessed using Ishihara's charts. If ever you visited an eye specialist, you too must have seen this chart
Explain the Hormones from the Islets of Langerhans The cells which make up the Islets of Langerhans are found in clusters, distributed throughout the substance of the pancreas.
Observing pollen grains from different flowers First of all we have to Secure several flowers in which the pollen has formed on the stamens .Shake pollen from each kind of flo
Water Pollution Pollution of fresh water is one of the most serious environmental problems of the world as a whole. In our country most of the rivers and lakes are polluted
Explain the Regulation of Blood Composition Each part of the nephron has different types of cells with different properties. An understanding of this is important to know how t
Which "spheres" are interacting when water evaporates from plants? Select all that apply.
1. (a)what is plane table traversing (b)with illustration ,elaborate how you would map an area using the technique
We will first give a brief description of the qocial and economic changes of this period so that developments in science can be seen in the proper perspective. Already, by the
Agriculture on a large scale: Crops had to be planted and harvested in the right season. Floods were a recurrent phenomenon in the river valleys, for which it was essent
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