Question

B) Rajiv has three colourless solutions (acidic, basic and neutral).
i) How can he identify the nature of the given solutions by using methyl orany
indicator
ii) Give two examples of neutral substances.
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Answer 1

(a) Methyl orange: Methyl orange changes its colour to yellow when added to a base or an alkali.

(b) Litmus paper: Red litmus paper turns blue, whereas blue litmus paper remains blue in a base or an alkali.

(c) Red cabbage extract: Red cabbage extract turns greenish-yellow in basic solutions.

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Answer 2

1) methyl orange became red in acidic medium

methyl orange became yellow in basic medium

methyl orange will remain orange when neutral

2) water and human blood are two example of neutral solution