For which of the two pairs, the angle of contact is same
A
Water and glass; glass and mercury
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B
Pure water and glass; glass and alcohol
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C
Silver and water; mercury and glass
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D
Silver and chromium; water and chromium
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Solution
The correct option is B Pure water and glass; glass and alcohol Both liquids water and alcohol have same nature (i.e. wet the solid). Hence angle of contact for both is acute.