On adding a compound X to a solution of red litmus, Aman observed that the solution turned colourless. Identify X.

Limestone

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Activated charcoal

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Sodium hydroxide

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Sulphuric acid

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Solution

The correct option is B Activated charcoal

Red litmus is a natural indicator that changes its colour to blue when a base is added to it.

However, when activated charcoal is added to red litmus, it becomes colourless.

This is due to the adsorption of coloured pigments by activated charcoal.

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On adding a compound X to a solution of red litmus, Aman observed that the solution turned colourless. Identify X.

The correct option is B Activated charcoal Red litmus is a natural indicator that changes its colour to blue when a base is added to it. However, when activated charcoal is added to red litmus, it becomes colourless. This is due to the adsorption of coloured pigments by activated charcoal.

The correct option is B Activated charcoal

Red litmus is a natural indicator that changes its colour to blue when a base is added to it.

However, when activated charcoal is added to red litmus, it becomes colourless.

This is due to the adsorption of coloured pigments by activated charcoal.