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Piyush365
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Asked: 2025-10-03T09:35:19+00:00 In:

The colour of the solution observed after 30 minutes of placing zinc metal to copper sulphate solution is (a) Blue (b) Colourless (c) Dirty green (d) Reddish Brown

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The correct option is (b) Colourless. When zinc metal is placed in copper sulphate solution, zinc displaces copper because it is more reactive. The blue colour of copper sulphate fades, turning the solution nearly colourless as zinc sulphate forms.

Class 10 Science Sample Paper for half yearly Exam 2025-26

Half Yearly Exam Sample Paper 2025-26

cbse sample paper 2026free sample papers pdf for class 10solution observed after 30 minutes of placing zinc metal
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