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`CB_(2)` layer gives a test for

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`CB_(2)` layer gives a test for
A. `Cl^(-)` only
B. `Br^(-)` and `I^(-)`
C. `Br^(-)` only
D. `I^(-)` only
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1 Answer

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Correct Answer - B
`CS_(2)` layer dissolver `Br_(2)` and `l_(2)` ions by chlorine water. They impact characteristic orange and violet colours respectively to the layer.
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