parachor value of substance is determined by
a) drop number method
b) temperature measurement
c) ostwald's viscometer method
d) none of above
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Explanation:
Answer is
option A) Drop number method.
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Answer: drop number method
Explanation: parachor is the unit of surface tension and to measure that it is one of the most common methods for measuring surface tension. The principle is to measure the weight of drops of a fluid of interest falling from a capillary glass tube, and thereby calculate the surface tension of the fluid. We can determine the weight of the falling drops by counting them.
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