MCQ
The raincoats are made water proof by coating it with a material, which ............
- AAbsorb water
- BIncrease surface tension of water
- ✓Increase the angle of contact
- DDecreases the density of water
✓
Answer
Correct option: C.
Increase the angle of contact
c
(c)
(c)
Raincoats are coated with material which increase the angle of contact, so water does not penetrates inside the layer.
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