Question

what will you observe when :a drop of sodium hydroxide is added to Blue litmus ?
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Answer 1

Answer:

Answer: (a) A 'drop of sodium hydroxide' is added to blue litmus paper remains change. Litmus paper is used as an acid base indicator. ... If a base is contact with red litmus paper than it colour remains.

Explanation:

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Answer 2

Answer:

A 'drop of sodium hydroxide' is added to blue litmus paper remains change. Litmus paper is used as an acid base indicator. If an acid contact with blue litmus paper than it changes to red colour. If a base is contact with red litmus paper than it colour remains.