A. Temperature at constant humidity
B. Humidity at constant temperature
C. Both A. and B.
D. Neither A. nor B.
Related Mcqs:
- Humid volume is the total volume in m3 of 1 kg of _____________________?
A. Vapour laden gas at 1 atm. and room temperature
B. Gas plus its accompanying vapour at 1 atm. and room temperature
C. Gas plus its accompanying vapour at 1 atm. and gas temperature
D. Vapour laden gas at 1 atm. and gas temperature - Humid volume, at a given temperature is a/an _______________ function of humidity?
A. Inverse
B. Exponential
C. Linear
D. Logarithmic - If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is________________?
A. 0.31
B. 0.107
C. 0.017
D. 0.215 - Weight of 1 m3 of humid air as compared to 1 m3 of dry air, under the same conditions, is_________________?
A. Less
B. More
C. Same
D. Unpredictable - Use of packed towers for distillation is generally limited to the____________________?
A. Small sizes
B. Multi-component distillation
C. High pressure operation
D. Vacuum distillation - In rectifying section of a continuous distillation column, the____________________?
A. Vapour is enriched with low boilers
B. Vapour is enriched with high boilers
C. Liquid is stripped of high boilers
D. None of these - Plate towers are preferred to packed towers, when large temperature changes are involved, because of the reason that the____________________?
A. Packing may be crushed due to thermal expansion/contraction of the components of the
equipments
B. Pressure drop in the equipment will be very high
C. Viscosity variation of the fluids may cause channelling/flooding
D. None of these - The McCabe ΔL law states that the____________________?
A. Molar heats of vaporisation of components are nearly equal
B. Linear crystal growth rate depends on the degree of super-saturation
C. Linear crystal growth rate does not depend on the crystal size
D. Linear crystal growth rate depends on the crystal size - The term “approach” in a cooling tower refers to the difference in the temperature of the____________________?
A. Cold water leaving the tower and the wet bulb temperature of the surrounding air
B. Hot water entering the tower and the wet bulb temperature of the surrounding air
C. Hot water entering and the cooled water leaving the cooling tower
D. None of these - The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the____________________?
A. Temperature rises
B. Pressure rises
C. Temperature falls
D. Pressure falls
