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Natural Indicators

can acids tur...

Question

can acids turn red litmus blue?

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Solution

Dear student, Red litmus paper turns blue under basic or alkaline conditions only so acid cannot turn red litmus blue. Regards

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Q. What do we observe on pouring acetic acid on red blue litmus papers ?
(a) Red litmus remains red and blue litmus turns red.
(b) Red litmus turns blue and blue litmus remains blue.
(c) Red litmus turns blue and blue litmus turns red.
(d) Red litmus becomes colourless and blue litmus remains blue.

Q. Acids, acidic oxide and acidic salts :
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(b) will turn blue litmus red
(c) will turn pH paper orangish red
(d) will turn pH paper green

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Nitric acid turns blue litmus red.

Q. Nitric acid turns red litmus blue.

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