MPSC PYQScienceSurface Tensionenglish

Identify incorrect sentences of the following ? 1) When soluble substances like salt are dissolved in water , surface tension of water decreases. 2) When sparingly soluble substances like soap , phenol are dissolved in water , surface tension of liquid decreases. 3) When insoluble impurities are added to water , it decreases surface tension of water. 4) None of above.

A.1 is wrong per key
B.2 wrong
C.3 wrong
D.4 only

Correct answer: A

Source paper

Science: Surface Tension

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