Question

In an experiment to test the pH of a given sample using pH paper, four students recorded the following observations:

Sample takenpH paper color turned to
I. WaterBlue
II. Dilute HClRed
III. Dilute NaOHBlue
IV. Dilute Ethanoic acidOrange


Which one of the above observations is incorrect?

A

I

B

II

C

III

D

IV

Medium

Solution

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Correct option is A)

As water used in labs (distilled water) is neutral and hence produces green colour when put on pH paper.

Hence, option A is correct.

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