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A student took solution X in a test-tube and added a few drops of universal indicator to it. The solution turned blue. On adding another solution Y to this test-tube drop-wise, the colour of solution changed to green. When a yet another solution Z was added, the solution turned yellow. Which of the following gives the correct conclusion of the student?(1) X is acid, Y is base, Z is salt solution(2) X is base, Y is acid, Z is acid(3) X is acid, Y is base, Z is base(4) X is base, Y is acid, Z is sugar solution

Answer» A student took solution X in a test-tube and added a few drops of universal indicator to it. The solution turned blue. On adding another solution Y to this test-tube drop-wise, the colour of solution changed to green. When a yet another solution Z was added, the solution turned yellow. Which of the following gives the correct conclusion of the student?

(1) X is acid, Y is base, Z is salt solution

(2) X is base, Y is acid, Z is acid

(3) X is acid, Y is base, Z is base

(4) X is base, Y is acid, Z is sugar solution


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