The angle of contact at the interface of water-glass is 
, ethyl alcohol-glass is 
, mercury-glass is 
and methyliodide-glass is 
. A glass capillary is put in a trough containing one of these four liquids. It is observed that the meniscus is convex. The liquid in the trough is
Text Solution
Verified by ExpertsThe correct answer is:
C
According to the question, the observed meniscus is of convex shape. Which is only possible when angle of contact is obtuse. Hence, the combination will be of mercury-glass 
.
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