191. Unit of mass velocity is___________________?
A. kg/m.hr
B. kg/m2.hr
C. kg/hr
D. kg/m2

192. 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 A., B. & C.

193. The value of gas constant ‘R’ is ______________ kcal/kg.mole.°C?
A. 2.79
B. 1.987
C. 3.99
D. None of these

194. 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

195. 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

196. 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

197. 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

198. 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

199. 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

200. 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