Which one of the following has highest volatility_________________?
(A) Diethyl ether
(B) Ethyl alcohol
(C) Water
(D) Ethylene glycol
During which process empty spaces between particles become minimum ?
(A) ionization
(B) condensation
(C) fusion
(D) evaporation
Table salt crystallizes with a______________________?
(A) Face centered cubic lattice
(B) body centered cubic lattice
(C) simple cubic lattice
(D) othorhombic lattice
Vapour pressure is not affected by_______________?
(A) Surface area
(B) temperature
(C) intermolecular forces
(D) atmospheric pressure
The ttractive forces between the partial positive end of one molecule and partial negative end of other molecule are called________________?
(A) Dipole-dipole forces
(B) Ion dipole-dipole forces
(C) London dispersion forces
(D) Debye forces
Formation of vapours from the surface of a liquid is called________________?
(A) vapourization
(B) evaporation
(C) condensation
(D) cracking
The quantity of heat required to convert one mole of liquid into its vapours at its boiling point is called molar heat of__________________?
(A) vaporization
(B) evaporation
(C) crystallization
(D) sublimation
Which one is false for evaporation ?
(A) Surface phenomenon
(B) Continuous
(C) Exothermic
(D) Cause cooling
When the atoms of third layer are arranged in such a way that they directly lie above the atoms of first layer then this arrangement is called_________________?
(A) ABAB (hexagonal)
(B) ABCABC (Cubic)
(C) Orthor hombic
(D) Rhombohedral