1281. Which liquid has highest Vapor pressure :

A. HF
B. H2O *
C. Acetic acid
D. Glycerin

1282. Vapor pressure of a liquid does not depends upon :

A. Nature of liquid
B. IMF
C. Temperature
D. Surface area *

1283. Vapour pressure of water at 25 degree centigrade is:

A. 76 Torr
B. 24 Torr *
C. 50 Torr
D. 80 Torr

1284. Which of the following has highest boiling point ?

A. Dimethyl ether
B. Acetic acid *
C. Water
D. Ethyl alcohol

1285. Freezing of water is :

A. Endothermic process
B. Exothermic process *
C. Spontaneous process
D. Both B and C

1286. Unit of surface tension is :

A. J.M -1
B. N.M -1 *
C. ERG.CM -1
D. All

1287. Which of the following property of liquid is concerned with its internal resistance to follow :

A. Surface tension
B. Viscosity *
C. Refractive index
D. Optical activity

1288. Capillary action can be explained by :

A. Surface tension *
B. Resistance to flow
C. Heat of vaporization
D. All

1289. Drop of a liquid acquire Spherical shape because :

A. Its tendency to minimize its surface area *
B. Its viscous nature
C. Its cohesive forces
D. None of those

1290. Poise is the unit of :

A. Surface tension
B. Viscosity *
C. Vapor pressure
D. Capillary action