Chemistry
Give reasons:
Carbonated drinks are bottled under high pressure.
Water
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Answer
The amount of gas dissolved in water increases with an increase in pressure. That is why carbonated drinks containing carbon dioxide are bottled under high pressure as they contain a large amount of gas dissolved in them.
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(a) Water has ………………… density and …………….. volume at 4°C.
(b) Freezing mixture contains ……………… and ……………. .
(c) The solubility of a gas in water …………….. with rise in temperature and ………………….. with rise in pressure.
(d) ………………. is the purest form of natural water.
(e) Use of excessive ……………… by farmers causes water pollution.
(f) Boiling removes the ………………. hardness of water.
(g) Water turns the colour of anhydrous copper sulphate ………………. .
(h) The sticky substance formed when soap is added to hard water is …………………. .
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Column A Column B deliquescent substance sodium bicarbonate hygroscopic substance magnesium chloride efflorescent substance conc. sulphuric acid substance causing temporary hardness washing soda