Is litmus paper and pH paper the same thing?

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Solution

Unlike trasitional litmus paper, which turns red in presence of an acid and blue in presence of an alkali, the PH Universal Indicator paper displays a variety of colors over a wide pH range so it can be used to determine an approximate pH of a solution.

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Similar questions

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

When blue litmus paper is dipped into the water, the colour of litmus paper remains same. Similarly, when red litmus paper is dipped into the water, the colour remains same. By the above observation, we can conclude that:

Q. A solution turns blue litmus paper red. Its pH is likely to be .

Q. Can we use the same blue litmus paper that turned into red when poured a drop of acid, again to obtain blue litmus paper again.

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