PHYSICS FOR AIEEE, IIT JEE--fluids Online Test

At critical temperature of a liquid, surface tension is:
zero
infinite
Varies liquid to liquid
Can’t be measured
Unit of viscosity is:
Poise
Dyne/cm
Joule/m2
joule
Effect of temperature on viscosity is given by:
Hole theory
Arrhenius theory
Adsorption theory
Collision theory
If surface area is increased:
Evaporation increase
b.p. increases
m.p. increases
Surface tension increases
Select incorrect statement:
Gases are compressible fluids
The molecular interaction energy practically overpowers the thermal energy in solid state
Molecular interactions between molecules are identical in steam, water and ice
Liquid is incompressible fluid
When one end of the fine capillary which is open at both ends is immersed in water, would completely fill in. It is due to:
Surface tension which pulls the water into the capillary
The surface tension which is great enough to overcome the attraction of gravity in water in fine capillary
Both (a) and (b)
None of the above
Surface tension of water is 73 dyne cm-1 at 20oC. If surface area is increased by 0.10 m2, work done is:
7.3 erg
7.3x 104 erg
73 joule
0.73 joule.
Which is true statement?
All liquids have concave meniscus
All liquids have convex meniscus
Mercury has convex and other liquids have convex meniscus
Mercury has concave and other liquid have convex meniscus
Incompressible matter is:
liquid
solid
gas
All of these
If detergent is added:
Surface tension decreases
Surface tension increases
Surface tension can increase or decrease
No effect
Description:

Questions are on surface tenion ,viscosity,and their dependence on temperature

Discussion
Kajal Sengupta
Physics 9th to 12 th grade,CIE, Edexcel, AP, IB , CBSE, ICSE
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