Question

balanced equation for

barium chloride solution is mixed with copper sulphate solution and a white precipitate is formed

on heating copper powder in air in a china dish the surface of the copper powder turns black

on heating green coloured ferrous sulphate crystals, reddish brown solid is left and smell of a gas having odour of burning sulphur is experienced

iron nails when left dipped in blue copper sulphate solution becomes brownish in colour and blue colour of copper sulphate fades away

quick lime reacts vigorously with water releasing large amount of heat

Answer 1

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