A. Doubled
B. Halved
C. Trebled
D. Unpredictable
CHEMICAL ENGINEERING
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
The value of gas constant ‘R’ is ______________ kcal/kg.mole.°C?
A. 2.79
B. 1.987
C. 3.99
D. None of these
Unit of mass velocity is___________________?
A. kg/m.hr
B. kg/m2.hr
C. kg/hr
D. kg/m2
Elements in a periodic table are arranged in order of their__________________?
A. Atomic number
B. Mass number
C. Atomic weight
D. Metallic characteristics