On adding zinc granules to freshly prepared ferrous sulphate solution a student observes that: a) a dull brown coating is formed.b) a grayish coating is formed.c) a black coating is formed.d) no coating is formed.

On adding zinc granules to freshly prepared ferrous sulphate solution

1.	On adding zinc granules to freshly prepared ferrous sulphate solution a student observes that: a) a dull brown coating is formed.b) a grayish coating is formed.c) a black coating is formed.d) no coating is formed.
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