Sodium ______________ has inverted solubility curve i.e. its solubility increases with the lowering of temperature?
(A) Carbonate (monohydrate)
(B) Chloride
(C) Thiosulphate
(D) Bisulphite
The temperature of a gas in a closed container is 27° C. If the temperature of the gas is increased to 300° C, then the pressure exerted is___________________?
(A) Doubled
(B) Halved
(C) Trebled
(D) Unpredictable
A gas mixture contains 6 moles of H2 and 2 moles of N2. If the total pressure of the gaseous mixture is 4 kgf/cm2; then the partial pressure of N2 in the mixture will be _____________ kgf/cm2 ?
(A) 1
(B) 2
(C) 4
(D) 8
Hess’s law of constant heat summation is based on conservation of mass. It deals with ___________________?
(A) Equilibrium constant
(B) Reaction rate
(C) Changes in heat of reaction
(D) None of these
In a neutral solution _________________?
(A) H+ ions are absent
(B) OH- ions are absent
(C) Both H+ and OH- ions are present in very small but equal concentration
(D) None of these
Number of gm moles of solute dissolved in one liter of a solution is called its____________________?
(A) Equivalent weight
(B) Molarity
(C) Molality
(D) Normality
A gaseous mixture contains 14 kg of N2, 16 kg of O2 and 17 kg of NH3. The mole fraction of oxygen is__________________?
(A) 0.16
(B) 0.33
(C) 0.66
(D) 0.47
Vapor pressure of a solution is proportional to (where, Sv and St are mole fraction of solvent and solute respectively) ?
(A) Sv
(B) 1/St
(C) St
(D) 1/Sv
The value of gas constant ‘R’ is ______________ kcal/kg.mole.°C?
(A) 2.79
(B) 1.987
(C) 3.99
(D) None of these
In a binary liquid system, the composition expressed as _______________ is independent of the temperature & pressure?
(A) Kg of solute/kg of solvent
(B) Kg-mole of solute/kg-mole of solvent
(C) Kg-mole of solute/1000 kg of solvent
(D) All