(a) What is 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 force per unit length acting at right angle to one of a line drawn in the surface.
(b) By adding detergents, soap or oil. By heating the liquid.
(a) Surface tension is the force per unit length acting at right angle to one of a line drawn in the surface.
(b) By adding detergents, soap or oil. By heating the liquid.