(a) Define surface tension
(b) State two methods by which the surface tension of a liquid can be reduced
(b) State two methods by which the surface tension of a liquid can be reduced
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Correct Answer: Option n
Explanation:
(a) Surface tension is the property of a liquid which makes its surface behave as though covered by an elastic skin.
(b) The surface tension of a liquid can be reduced by (i) Heating the liquid (ii) Addition of impurities such as oil, alcohol, soap, camphor, kerosene etc.
(a) Surface tension is the property of a liquid which makes its surface behave as though covered by an elastic skin.
(b) The surface tension of a liquid can be reduced by (i) Heating the liquid (ii) Addition of impurities such as oil, alcohol, soap, camphor, kerosene etc.