Chemistry
Answer
(i) An aqueous solution of NH3 is called Liquor Ammonia. It is used as a cleaning agent to remove oil or grease stains from clothes, cleaning window panes, porcelain articles, etc as it emulsifies or dissolves fats, grease etc.
(ii) Liquefied NH3 is used as refrigerant because (a) it is highly volatile and has a high latent heat of evaporation. (b) it easily liquefies under pressure, at low temperature.
Related Questions
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(b) dry cells.
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