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The angle of contact between glass and mercury is
(d) The angle of contact between glass and mercury is 135.
A mercury drop does not spread on a glass plate because the angle of contact between glass and mercury is
(b) The mercury does not spread on a glass plate because the angle of contact between glass and mercury is obtuse.
The liquid meniscus in the capillary tube will be convex if the angle of contact is
(a)
For convex meniscus the angle of contact is greater than
The value of contact angle for kerosene with solid surface.
(a) The angle of contact will be equal to zero as it completely wets the solid surface.
Nature of meniscus for liquid of angle of contact
(c) When angle of contact = 0 then, the meniscus for liquid will be semi-spherical.
A liquid wets a solid completely. The meniscus of the liquid in a sufficiently long tube is
(b) The liquid wets the solid completely, so angle of contact, . Then the meniscus will be concave when .
For which of the two pairs, the angle of contact is same
(b) Both liquids water and alcohol have same nature (i.e. wet the solid). Hence angle of contact for both is acute
If the surface of a liquid is plane, then the angle of contact of the liquid with the walls of container is
(d) Tangent drawn at point of contact makes 0° with wall of container.
If two soap bubbles of different radii are in communication with each other
(c) Since
The surface tension of soap solution is . The excess pressure inside a soap bubble of diameter 1 cm is
(b) Excess pressure
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.