1291. Following properties of liquid decrease with increase in temperature except :

A. Surface tension
B. Viscosity
C. Vapor pressure *
D. Density

1292. Surface tension of a liquid is inversely related to :

A. Density of liquid
B. Number of drops of liquid *
C. Mass of drops of liquid
D. All of these

1293. Liquid crystals are always ______

A. Isotropic
B. Anisotropic *
C. Electric conductor
D. None of these

1294. Liquid crystals are used is skin thermograph because these are :

A. Anisotropic
B. Isotropic
C. Temperature sensors *
D. Fluids

1295. Which of the following is not a feature of solids :

A. Definite Volume
B. Frequent fluidity
C. Rigidity *
D. Definite shape

1296. Which of the following is not characteristic of amorphous solids?

A. Sharp melting point *
B. Non-orderly management
C. Isotropy
D. Tendency to undergo irregular cleavage

1297. Which of the following is not property of crystalline solid ?

A. Isotropy *
B. Sharp melting point
C. Orderly arrangement
D. Cleavage plane

1298. Which of the following pairs are non-crystalline Solids ?

A. Diamond, Wood
B. Glass, Table salt
C. Wood, Glass *
D. Sucrose, glass

1299. Which of the following is molecular crystal ?

A. Ice
B. I2
C. Wax
D. Both A and B *

1300. Which type of solid are generally more conductor of electricity ?

A. Metallic *
B. Covalent
C. Ionic
D. Molecular