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When Ethane-1,2-diamine is added progressively to an aqueous solution of Nickel (II) chloride, the sequence of colour ch…

Q1

When Ethane-1,2-diamine is added progressively to an aqueous solution of Nickel (II) chloride, the sequence of colour change observed will be :

[JEE Main 2025, 24 Jan (Shift 2)]

a

Green → Pale Blue → Blue → Violet

b

Violet → Blue → Pale Blue → Green

c

Pale Blue → Blue → Violet → Green

d

Pale Blue → Blue → Green → Violet

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