When the temperature is increased the angle of contact of a liquid 

(a) Increases

(b) Decreases

(c) Remains the same

(d) First increases and then decreases

Concept Questions :-

Surface tension
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The angle of contact between glass and mercury is

(a) 0°                                     (b) 30°
(c) 90°                                   (d) 135°

Concept Questions :-

Surface tension
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A mercury drop does not spread on a glass plate because the angle of contact between glass and mercury is

(a) Acute                    (b) Obtuse
(c) Zero                      (d) 90°

Concept Questions :-

Surface tension
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The liquid meniscus in the capillary tube will be convex if the angle of contact is

(a) Greater than 90°                                 (b) Less than 90°
(c) Equal to 90°                                  (d) Equal to 0°

Concept Questions :-

Capillary rise
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The value of contact angle for kerosene with solid surface.
(a) 0°                                     (b) 90°
(c) 45°                                   (d) 33° 

Concept Questions :-

Surface tension
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Nature of meniscus for liquid of 00 angle of contact

(a) Plane                               (b) Parabolic
(c) Semi-spherical                  (d) Cylindrical

Concept Questions :-

Surface tension
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A liquid wets a solid completely. The meniscus of the liquid in a sufficiently long tube is 
(a) Flat                                 (b) Concave
(c) Convex                            (d) Cylindrical

Concept Questions :-

Surface tension
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For which of the two pairs, the angle of contact is same

(a) Water and glass; glass and mercury

(b) Pure water and glass; glass and alcohol

(c) Silver and water; mercury and glass

(d) Silver and chromium; water and chromium

Concept Questions :-

Surface tension
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If the surface of a liquid is plane, then the angle of contact of the liquid with the walls of container is 
(a) Acute angle                (b) Obtuse angle
(c) 90°                            (d) 0°

Concept Questions :-

Surface tension
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If two soap bubbles of different radii are in communication with each other

(a) Air flows from larger bubble into the smaller one

(b) The size of the bubbles remains the same

(c) Air flows from the smaller bubble into the large one and the larger bubble grows at the expense of the smaller one

(d) The air flows from the larger

Concept Questions :-

Surface tension
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