student placed an iron nail in copper sulphate solution. He observed the reddish brown coating on the iron nail which is
(a) soft and dull
(b) hard and flaky
(c) smooth and shining
(d) rough and granular
plz . ... give proper answer with proof....
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In these above Iron ( fe ) is more reactive metal than the Copper ( Cu ) Because Iron ( fe ) will displace the Copper ( Cu ). when we place an iron nail in copper sulphate solution the reddish brown coating formed an iron nail is smooth and shining
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