Addition of a non-volatile solute to a solvent produces a ______________ in its solvent?
(A) Freezing point elevation
(B) Boiling point depression
(C) Vapor pressure lowering
(D) All
With increase in the temperature of pure (distilled) water, its____________________?
(A) pOH decreases and pH increases
(B) pOH and pH both decreases
(C) pH and pOH both increases
(D) pH decreases and pOH increases
6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H2 produced will be ______________ gm?
(A) 0.5
(B) 1
(C) 3
(D) 5
Boiling point of a solution as compared to that of the corresponding solvent is _________________?
(A) Less
(B) More
(C) Same
(D) Either more or less; depends upon the solvent
Number of gm moles of solute dissolved in 1 kg of solvent is called its___________________?
(A) Normality
(B) Molarity
(C) Molality
(D) Formality
Assuming that CO2 obeys perfect gas law, calculate the density of CO2 (in kg/m3) at 263°C and 2 atm ?
(A) 1
(B) 2
(C) 3
(D) 4
What fraction of the total pressure is exerted by oxygen, if equal weights of oxygen and methane are mixed in an empty vessel at 25°C ?
(A) 2/3
(B) 1/3
(C) 1/2
(D) 1/3 × (298/273)
An ideal gas can be liquefied, because ___________________?
(A) Its molecular size is very small
(B) Its critical temperature is more than 0°C
(C) Forces operative between its molecules are negligible
(D) It gets solidified directly without becoming liquid
With increase in temperature, the surface tension of water _____________________?
(A) Increases
(B) Decreases
(C) Remain constant
(D) Increases linearly
Vapor pressure of water at 100°C is about _______________ bar?
(A) 0.1013
(B) 1.013
(C) 10.13
(D) 101.3