A student was given three solution marked X, Y, and Z, and asked to arrange them in the increasing order of their pH values. The student put two drops of each solution on three strips of universal indicator paper separately. The colours shown by the three indicator strips are as follows:

Which of the following gives the correct increasing order of pH values ?
(1) Z (2) Y
(3) X (4) Z
"

Correct answer: (2) Y

Explanation:

From the above image of universal indicator, we can conclude that as X shows blue colour so it is a base, Y shows yellow colour, so it is an acid, and Z shows green colour, so it is neutral. Hence, by the variation in the colour of the pH paper, we can arrange them in increasing order: Y

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Updated on: 10-Oct-2022

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(1) Z	(2) Y
(3) X	(4) Z

(1) Z	(2) Y
(3) X	(4) Z