The test-tube I contains sodium bicarbonate soultion whereas test-tube II contains lemon juice. On introducing pH paper strips in both the solutions, it is observed that the pH paper turns :
(1)red in I and blue in II (2) blue in both
(3)blue in I and red in II (4) red in I and pink in II

Correct answer: (3) blue in I and red in II

Explanation:

From the above image, it is clear that the pH paper turns blue in I (sodium bicarbonate) and red or orangish red in II (lemon juice).

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Updated on: 10-Oct-2022

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(1)red in I and blue in II	(2) blue in both
(3)blue in I and red in II	(4) red in I and pink in II

The test-tube I contains sodium bicarbonate soultion whereas test-tube II contains lemon juice. On introducing pH paper strips in both the solutions, it is observed that the pH paper turns :(1)red in I and blue in II(2) blue in both(3)blue in I and red in II(4) red in I and pink in II

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The test-tube I contains sodium bicarbonate soultion whereas test-tube II contains lemon juice. On introducing pH paper strips in both the solutions, it is observed that the pH paper turns :
(1)red in I and blue in II (2) blue in both
(3)blue in I and red in II (4) red in I and pink in II