Search
.Management Sciences
Category: CHEMICAL ENGINEERING
An alloy used as thermocouple material comprises of 40% nickel and 60% copper. It is called____________________?
A. Constantan
B. Kanthal
C. Chromel
D. German silver
Pick out the wrong statement ?
A. O2, NO and NO2 exhibit paramagnetic properties as a result of unpaired electrons
B. CO2 is the strongest paramagnetic gas
C. Paramagnetic susceptibility of gases decreases with temperature
D. Paramagnetic susceptibility of gases permits the measurement of their concentration
Mercury thermometer is commonly used for low temperature measurement. The freezing point and boiling point of mercury are respectively _____________ °C?
A. – 39 and 350
B. – 51 and 439
C. – 79 and 395
D. – 10 and 425
The heating capacity of muffle furnace depends on the____________________?
A. Surface area & emissivity of the stock
B. Properties of the muffle wall (temperature, area, and emissivity)
C. Both A. & B.
D. Neither A. nor B.
One ton of refrigeration capacity is equivalent to the heat removal rate of____________________?
A. 50 kcal/hr
B. 200 BTU/hr
C. 200 BTU/minute
D. 200 BTU/day
Case hardening of a material is__________________?
A. Followed by tempering or carburising
B. Preceded by its tempering
C. Done to get a soft ductile interior with a very hard surface
D. Carried out to get extreme hardness in its core
Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is _____________ the longitudinal stress?
A. Half
B. Equal to
C. Twice
D. Eight times
Pick out the wrong statement?
A. The integral method of analysing kinetic data is used when the data is scattered
B. The differential method of analysing kinetic data requires more accurate or larger amounts of data
C. When the reaction rate is independent of temperature, the reaction is said to be of zero order
D. The ratio of volumes of plug flow reactor to that of mixed reactor is always less than one for identical feed composition, flow rate, conversion and for all positive reaction orders
Recent Comments