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Question

(i)_______ turn blue litmus red whereas (ii)______ turn red litmus blue.


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Solution

Litmus Test:

  1. Litmus is an acid-base indicator that is obtained from Lichens.
  2. It is used to determine whether a substance is acidic or basic.
  3. Litmus paper is generally red or blue.
  4. When litmus paper is dipped in an acidic substance it turns blue litmus to red.
  5. When litmus paper is dipped in a basic substance it turns red litmus to blue.

So, Acids turn blue litmus red whereas bases turn red litmus blue.


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