Is it true that when litmus is used as an indicator, it gives the colour red for bases?

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True

False

answer is B.

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Detailed Solution

The above statement is false.
Indicators are compounds that change colour in the presence of acids and bases. One of the most often used indicators in laboratories is litmus. Lichen is used to make litmus. The colour of the litmus paper can change to either red or blue. When exposed to acidic circumstances, blue litmus paper turns red, and red litmus paper turns blue.
The corrected statement would be, “When litmus is used as an indicator, it gives the colour red to acids”.

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