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Physical Chemistry -- Liquid State
21.
Which of the following factors is responsible for surface tension?
- A.Symmetrical force distribution in the liquid.
- B.Asymmetrical force distribution in the liquid.
- C.The symmetrical force distribution in solid.
- D.All of these.
- Answer
- Report
Answer : [B]
22.
A small drop of liquid takes a nearly spherical shape, because
- A.for a given volume, a sphere assumes the smallest surface area
- B.for a given volume, a sphere assumes the smallest surface tension
- C.the drop has a symmetrical distribution of force
- D.the drop has the least adsorption power
- Answer
- Report
Answer : [A]
23.
Which of the following statements is correct?
- A.The formation of a water droplet is exothermic and the breaking up of one endothermic.
- B.The formation of a water droplet is endothermic and the breaking up of one exothermic.
- C.The formation as well as the breaking up of a water droplet are exothermic.
- D.None of these.
- Answer
- Report
Answer : [B]
24.
If two soap bubbles of different radii are connected by a tube,
- A.the angle of contact between the soap bubbles and water decreases
- B.the surface energy of the system becomes zero
- C.air flows from the smaller to the bigger bubble
- D.the total pressure of the system remains the same
- Answer
- Report
Answer : [C]
25.
Bernoulli’s principle is a consequence of the law of conservation of
- A.angular momentum
- B.mass
- C.energy
- D.momentum
- Answer
- Report
Answer : [C]
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