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The clouds consist of charged particles of water dispersed in air. Some of them are + vely charged, others are negatively charged. When + vely charged clouds come closer they have cause lightening and thundering whereas when + ve and –ve charged colloids closer they cuase heavy rain by aggregation of minute particles. It is possible to cause artificial rain by throwing electrified sand or silver iodide from an aeroplane and thus coagulation the mist hanging in air. Clouds are colloids solution of

Answer»

LIQUID in gas
gas in liquid
liquid in liquid
solid in liquid

Answer :A


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