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Madan Mohan
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Asked: 2021-12-06T09:58:23+00:00 In:

A blue litmus paper was first dipped in dil. HCl and then in dil. NaOH solution. The colour of the litmus paper will be

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Poll Results

40%(a) changed first to red and then to blue ( 2 voters )
20%(b) changed first to blue and then colourless ( 1 voter )
0%(c) remains blue in both times
40%(d) changed to red ( 2 voters )
Based On 5 Votes

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You must know that – in acid blue Litmus changes to Red. Generally, litmus are indicators. And in basic solution red litmus changes to Blue.

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      (a) changed first to red and then to blue
      In acid blue Litmus changes to Red. Generally, litmus are indicators. And in basic solution red litmus changes to Blue. Hence, Blue litmus first changes its colour to Red and then to Blue. Your answer will be option [A].

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