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Observe the given figure carefully. Whi...

Observe the given figure carefully.

Which of the following observations are correct ?
I. A white coloured residue is left behind in the test tube.
II. Water droplets are observed on the upper cooler part of the test tube.
III. On adding water to the residue, the colour changes to green.

A

I and III only

B

II and III only

C

I and II only

D

I, II and III

Text Solution

Verified by Experts

The correct Answer is:
C
On adding water to the white residue, colour changes to blue due to rehydration of anhydrous copper sulphate.
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