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From the following sets of statements on capillary action, identify the correct pair.
I. Capillary effect is also known as meniscus effect.
II. The fall of liquid surface during capillary action is known as capillary depression
III. The effect is represented in terms of mm/kg of liquid.
IV. The value of capillarity strictly depends only on specific weight of the liquid
  • a)
    I and II
  • b)
    II and III
  • c)
    III and IV
  • d)
    I and IV
Correct answer is option 'A'. Can you explain this answer?
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From the following sets of statements on capillary action, identify th...
Capillary effect
  • The phenomenon of liquid rise or fall in a small diameter capillary tube, when dipped into a liquid, is called the capillary or meniscus effect. It is a surface tension effect that depends on the relative intermolecular cohesion and adhesion between substances. When the liquid has greater adhesion than cohesion, then the liquid wets the solid surface with which it is in contact and tends to rise at the point of contact giving rise to the capillarity effect.
  • Let us consider a small capillary glass tube of radius r. When the tube is partially immersed in water, water will wet the surface of the tube and will rise in the tube to some height, above the normal water surface. This phenomenon is known as the capillary rise and is because of the greater adhesion between the glass and the water molecules than the cohesion between water molecules.
  • Due to the greater adhesion, the water molecules tend to crowd towards the glass surface and form a concave surface with a small angle of contact, as shown in Figure (a).
  • Let us immerse the same glass tube vertically in a pool of mercury. The mercury level inside the tube dips down and the surface of mercury inside the tube will become lower than the mercury level outside.
  • This phenomenon is capillary depression. Here, the cohesion between mercury molecules is greater than the adhesion between mercury and glass molecules. Due to this, the mercury level has dipped down forming a convex surface (known as meniscus) with an angle of contact, θ greater than 90°, as shown in Figure 1 (b).

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From the following sets of statements on capillary action, identify the correct pair.I. Capillary effect is also known as meniscus effect.II. The fall of liquid surface during capillary action is known as capillary depressionIII. The effect is represented in terms of mm/kg of liquid.IV. The value of capillarity strictly depends only on specific weight of the liquida)I and IIb)II and IIIc)III and IVd)I and IVCorrect answer is option 'A'. Can you explain this answer?
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From the following sets of statements on capillary action, identify the correct pair.I. Capillary effect is also known as meniscus effect.II. The fall of liquid surface during capillary action is known as capillary depressionIII. The effect is represented in terms of mm/kg of liquid.IV. The value of capillarity strictly depends only on specific weight of the liquida)I and IIb)II and IIIc)III and IVd)I and IVCorrect answer is option 'A'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about From the following sets of statements on capillary action, identify the correct pair.I. Capillary effect is also known as meniscus effect.II. The fall of liquid surface during capillary action is known as capillary depressionIII. The effect is represented in terms of mm/kg of liquid.IV. The value of capillarity strictly depends only on specific weight of the liquida)I and IIb)II and IIIc)III and IVd)I and IVCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for From the following sets of statements on capillary action, identify the correct pair.I. Capillary effect is also known as meniscus effect.II. The fall of liquid surface during capillary action is known as capillary depressionIII. The effect is represented in terms of mm/kg of liquid.IV. The value of capillarity strictly depends only on specific weight of the liquida)I and IIb)II and IIIc)III and IVd)I and IVCorrect answer is option 'A'. Can you explain this answer?.
Solutions for From the following sets of statements on capillary action, identify the correct pair.I. Capillary effect is also known as meniscus effect.II. The fall of liquid surface during capillary action is known as capillary depressionIII. The effect is represented in terms of mm/kg of liquid.IV. The value of capillarity strictly depends only on specific weight of the liquida)I and IIb)II and IIIc)III and IVd)I and IVCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Civil Engineering (CE). Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free.
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