CBSE Class 9 Answered
how will you demonstrate that water vapour are present in air
Asked by ashwinivg | 31 Aug, 2008, 12:07: PM
Expert Answer
The presence of water vapour in the air is shown by allowing white anhydrous copper sulphate to be exposed to damp air. After some time, the white substance becomes blue due to the water vapour in the air.
Answered by | 07 Sep, 2008, 08:39: AM
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