One ‘Therm’ is equivalent to:
A. 105 BTU
B. 105 kcal
C. 109 BTU
D. 109 kcal
Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is:
A. 1.72
B. 0.58
C. 0.5
D. 0.2
How much O2 can be obtained from 90 kg of water:
A. 32 kg
B. 80 kg
C. 64 kg
D. 90 kg
What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20):
A. AB3
B. A2B3
C. A2B
D. AB2
Which of the following has the smallest least effect on the solubility of a solute into the solvent:
A. Nature of the solute
B. Nature of the solvent
C. Temperature
D. Pressure
Normality of a solution does not change with the increase in the:
A. Pressure
B. Temperature
C. Solute concentration
D. Dilution of the solution
The depression in freezing point of a solution is:
A. Inversely proportional to the mass of solvent
B. Directly proportional to the mole of solute
C. Both A. and B.
D. Neither A. nor B.
At higher temperatures, molal heat capacities for most of the gases (at constant pressure) ____ with increase in temperature:
A. Varies linearly
B. Increases
C. Decreases
D. Does not vary
Which of the following terms of Vander Walls equation of state for a non-ideal gas accounts for intermolecular forces:
A. RT
B. P + (a/V2)
C. (V – b)
D. 1/RT
With increase in the solute concentration, the specific heat of aqueous solutions:
A. Increases
B. Decreases
C. Remains unchanged
D. Either A. or B.; depends on the type of solution
