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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