Addition of water to $C o C l_{2}$ changes colour from blue to:

red

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pink

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violet

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green

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Solution

The correct option is B pink
When water is present, the test paper goes from blue to pink. As humidity increases, cobalt chloride changes color from sky blue to purple to pink.

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Similar questions

Removal of water from $C u S O_{4} .5 H_{2} O$ changes colour from blue to:

H C l

C o {C l}_{2}

C u S O_{4}

N H_{3}

C o C l_{2}

{C o C l}_{2}

{N H}_{4} S C N

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