A very dilute solution is prepared by dissolving ‘x1’ mole of solute in ‘x2’ mole of a solvent. The mole fraction of solute is approximately equal to_________________?
(A) x1/x2
(B) x2/x1
(C) 1 – (x1/x2)
(D) 1/x2
The latent heat of vaporisation__________________?
(A) Decreases with increased temperature
(B) Decreases as pressure increases
(C) Becomes zero at the critical point
(D) All
Atoms of the same element, but of different masses are called__________________?
(A) Isobars
(B) Isotones
(C) Isotopes
(D) None of these
The temperature at which the second Virial co-efficient of a real gas is zero is called the_____________________?
(A) Eutectic point
(B) Boyle temperature
(C) Boiling point
(D) Critical temperature
Percentage saturation of a vapor bearing gas is always _____________ the relative saturation?
(A) Higher than
(B) Smaller than
(C) Equal to
(D) Either
The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is_____________________?
(A) Termed as relative saturation
(B) Not a function of the composition of gas mixture
(C) Called percentage saturation
(D) Not a function of the nature of vapor
At room temperature, the product [H+] [OH-] in a solution is 10-14 moles/litre. If, [OH-] = 10-6 moles/litre, then the pH of the solution will be ________________________?
(A) 6
(B) 8
(C) 10
(D) 12
For most salts, the solubility increases with rise in temperature, but the solubility of _______________ is nearly independent of temperature rise?
(A) Sodium chloride
(B) Sodium carbonate monohydrate
(C) Anhydrous sodium sulphate
(D) Hypo
The chemical nature of an element is independent of_______________________?
(A) Its atomic number
(B) The number of protons or electrons present in it
(C) The number of neutrons present in it
(D) None of these