Indicator type silica gel used as a dehumidifier containsA. `Cu^(2+)ions`B. `Ni^(2+)ions`C. `Co^(2+)ions`D. `Fe^(2+)ions`.

Indicator type silica gel used as a dehumidifier containsA. `Cu^(2+)io

1.	Indicator type silica gel used as a dehumidifier containsA. `Cu^(2+)ions`B. `Ni^(2+)ions`C. `Co^(2+)ions`D. `Fe^(2+)ions`.
Answer» Correct Answer - C Indicator type of silica gel used as a dehumidifier contains `Co^(2+)` ions, when dry it is blue in colour and on absorbine moisture it becomes pink.

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Indicator type silica gel used as a dehumidifier containsA. `Cu^(2+)ions`B. `Ni^(2+)ions`C. `Co^(2+)ions`D. `Fe^(2+)ions`.

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