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Question

Which of the following reacts with NaOH solution, giving a pale green precipitate?

A
FeSO4
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B
MgSO4
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C
Zn(NO3)2
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D
MnCl2
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Solution

The correct option is A FeSO4
Ferrous sulphate reacts with sodium hydroxide to give a pale green precipitate of ferrous hydroxide. The reaction is as follows:
FeSO4+2NaOHFe(OH)2+Na2SO4

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