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A colourless liquid sample was tested with pH paper strip. The colour of the strip changed to reddish pink. The sample could be :(1) tap water(2) sodium hydroxide solution(3) distilled water(4) ethanoic acid solution

Answer» A colourless liquid sample was tested with pH paper strip. The colour of the strip changed to reddish pink. The sample could be :

(1) tap water

(2) sodium hydroxide solution

(3) distilled water

(4) ethanoic acid solution


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