Question

why dose some liquid medicines kept in dark coloured bottles ?

Answer 1

Here is your answer...
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Some liquid medicines are kept in dark coloured bottles. this is because some liquid medicines can react to the light but when they are kept in coloured bottles these help to prevent the medicines to come in contact with the light.

➡ This is because some chemicals are photosensitive.

Answer 2

this is because some liquid medicines can react to the light but when they are kept in coloured bottles these help to prevent the medicines to come in contact with the light and from reacting.