A 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 flading (c) smooth and shining (d) rough and granular
In an experiment when you place an iron nail in copper sulphate solution the reddish brown coating formed on the nail is a soft and dull B hard and flaky C smooth and shining D rough and granular
