104
Question
Addition of water to CoCl2 changes colour from blue to:
Addition of water to CoCl2 changes colour from blue to:
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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.
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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