carbon dioxide

21.02.18 APSC (Assam) Current Affairs

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ASSAM Centre constitutes committee to study Brahmaputra and flood control measures in Assam   The Centre has constitued a committee headed by the Vice Chairman of the NITI Aayog Rajiv Kumar to study the Brahmaputra and flood control measures in Assam and neighbouring states.   Assam government has submitted required report on flood control measures … Read more 21.02.18 APSC (Assam) Current Affairs

Preparation of nitrogen

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Preparation of nitrogen Nitrogen is found in both free and combined states. It occupies 78.07% by volume. Nitrogen can be prepared: By heating copper in air: Firstly, air is passed through lime water and then concentrated sulphuric acid to make the air free from carbon dioxide and moistures respectively. The air contains only nitrogen and … Read more Preparation of nitrogen

Excretory System

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Excretory System Introduction If you exercise on a hot day, you are likely to lose a lot of water in sweat. Then, for the next several hours, you may notice that you do not pass urine as often as normal and that your urine is darker than usual. Do you know why this happens? Your … Read more Excretory System

Oxygen

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Preparation of Oxygen Oxygen Oxygen is prepared in lab generally in two ways either by the application of heat or no application of heat. Using heat: Oxygen in lab is prepared by heating the mixture of powdered potassium chlorate and manganese dioxide in the ratio 4:1 in a hard glass test tube. The oxygen gas … Read more Oxygen