The volume of an ideal gas is 100 cm3 at 100?C. If the pressure is held constant at what temperature will the gas have a volume of 200 cm3?
A.200?C
B.473?C
C.746?C
D.50?C
Category: Chemical Engineering Mcqs
The percentage by volume of argon in the air is about
A.2.97%
B.0.94%
C.0.01%
D.0.00%
Total installed cost of a centrifugal pump coupled with drive and capable of developing 1000 ft head at 500 gpm is to be calculated using Rs. 55000 as the cost of a pump of 500 ft head at 1000 gpm. The cost estimation method involves the term capacity which will be taken as (gpm)x (head)y where
A.x = 1 y = 2
B.x = 1/2 y = 1
C.x = 2 y = 1
D.x = 1 y = 1
In heat exchanger design, one transfer unit means
A.One fluid exchanging with another fluid of the same chemical composition
B.The section of heat exchanger which will cause temperature drop of one degree centigrade
C.The section of heat exchanger where heat transfer surface area is one square metre
D.The equivalent length of tubes in case the heat exchange was for a temperature difference of 1?C
E.Condition when the change in temperature of 1?C numerically equals the average driving force.
A grey body has emissivity
A.more than 1
B.1
C.less than 1
D.0.5
In order to avoid a correction for the effect of capillary in manometers used for measuring pressure the diameter of the tube should he
A.less than or equal to 3 mm
B.more than 3 mm but less than 5 mm
C.equal to 5 mm
D.greater than or equal to 0.5 inch.
For most chemical plants the ration of working capital to total capital investment varies from
A.10 to 20 per cent
B.from 80 to 90 per cent
C.from 51 to 65 per cent
D.from 1 to 2 per cent
Which of the following is an oxygen compound?
A.Naththenic acid
B.Indole
C.Pyrrole
D.Methyl mercaptan
Inside the distillation column
A.the driving for the vapour flow is the pressure drop
B.the driving force for the liquid flow is its weight
C.the liquids and vapours are always at their bubble point and dew point respectively
D.all of these answers
In which of the following heat exchange process, the value of overall heat transfer coefficient will be highest?
A.Air to heavy tars
B.Air to carbondioxide
C.Steam to oil
D.Steam condensers
