JEE Main Chemistry question

Addition of excess of sodium hydroxide solution to a solution of nickel sulphate results in the formation of a:

(A)Green precipitateCorrect
(B)Pink colouration
(C)Blue precipitate
(D)Violet colouration

Answer: (A)

Solution

Nickel(II) hydroxide, , precipitates as a green solid when NaOH is added to a nickel salt solution, and unlike amphoteric hydroxides such as or , it does not dissolve in excess NaOH (remaining as a precipitate

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Question ID VK-137935