Q.1
The rise of liquid in the capillary tube does not depend on:
  • Atmospheric pressure
  • Density of the liquid
  • Radius of the capillary
  • Temperature
Q.2
Dimensional formula of surface tension is
  • [MLT].
  • [MT-2].
  • [M0T-2].
  • [ML2T-2].
Q.3
The rise in the level of a liquid in a tube is h. What will be the rise in the level if the same amount of liquid is poured into a tube of half the diameter.
  • 0
  • h/2
  • h
  • 2h
Q.4
Which one of the following is an example of capillary action
  • Absorption of ink
  • Floating of wood
  • Ploughing of field
  • Rise of oil into the wick
Q.5
The surface of water in contact with glass will in the capillary tube is
  • Concave
  • Convex
  • Either concave or convex
  • Plane
Q.6
Calculate the magnitude of capillary effect in millimeters in a glass tube of 7mm diameter, when immersed in mercury. The temperature of the liquid isand the values of surface tension of mercury atis 0.N/m. The angle of contact for mercury is 130°. The density of mercury is 13600kg.m-3.
  • 1.40
  • 2.80
  • 1.70
  • 2.10
Q.7
If a glass tube ofmm diameter is immersed in water, what will be the rise or fall in mm in capillary? (Take surface tension = 0.N/m, g =m/s2 , ρw =kgm-3 and angle of contact = 0)
  • 0.75
  • 1.5
  • 3
  • 6
Q.8
The rise in the water level in a capillary tube of radius 0.cm when dipped vertically in a beaker containing water of surface tension 0. Nm−1Nm^{-1}Nm−is (g= 10ms−210ms^{-2}10ms−)
  • 2 cm
  • 4 cm
  • 1.5 cm
  • 3 cm
Q.9
Force of attraction between similar molecules is called
  • Cohesive force
  • Adhesive force
  • Magnetic force
  • gravitational force
Q.10
solid-liquid adhesive force is less than cohesive force, the angle of contact is
  • zero
  • 90
  • >>>  90
  • <<<  90
Q.11
Water's ability to stick to glass is
  • adhesion
  • cohesion
  • surface tention
  • capillary action
Q.12
What is adhesion?
  • Water's ability to stick to itself
  • Water's ability to stick to other substances
  • The strength of the cohesion of all the water molecules combined
  • Tape, glue and other adhesives
Q.13
Describe COHESION.
  • Water molecules attracted to other substances.
  • Water molecules climbing upwards against the force of gravity.
  • Water molecules dissolving many substances because of its polarity.
  • Water molecules attracted to other water molecules.
Q.14
Surface tension of water can be reduced by
  • heating
  • Adding soap solution
  • cooling
  • Both A & B
Q.15
Water beads up on the surface of a penny because of this property.
  • Adhesion
  • High Surface Tension
  • Universal Solvent
  • Changes in Density
Q.16
Which characteristic of water will allow a paperclip to remain floating on water when the paperclip is gently placed on top of the water?
  • adhesion
  • surface tension
  • solvent properties
  • nonpolar
Q.17
Surface tension is the property of water in which...
  • water molecules at the surface tend to stick together.
  • water tends to push up into a dome over a container before it finally spills..
  • water tends to be see-through.
  • Both A & B
Q.18
Because of surface tension, you can put things into a full glass of water and...
  • the water will immediately spill.
  • the water won't spill for quite a while.
  • the water will never spill.
  • when the water spills, whatever you put in will also spill.
Q.19
The surface tension of a liquid is T. The increase in its energy on increasing the area of its surface by amount A is
  • TA
  • T2A
  • T
  • T2A2
Q.20
The surface tension of a soap solution is 0.03N/m.The work done to produce a soap bubble of radius 0.is
  • 1.6 x 10-3 J
  • 2.6 x 10-3 J
  • 1.6 x 10-6 J
  • 1.88 x 10-3 J
0 h : 0 m : 1 s