A shpere, a cube and a disc all of the same material, quality and volume are heated to 900K and left in air. Which of these will have the lowest rate of cooling
A.Cube
B.Disc
C.Sphere
D.All will have the same rate of cooling
Category: Chemical Engineering Mcqs
Percentage of carbon is same in
A.cast iron and pig iron
B.cast iron and steel
C.pig iron and steel
D.pig iron and wrought iron
The first atomic power plant in India was built at
A.Narora
B.Kalapakkam
C.Tasapur
D.Kota
For the system air-water vapour hG/ky Cs is approximately equal to
A.1
B.0.24
C.2.4
D.3
Gas temperature is an important consideration in the design of fabric filter because it affects
A.the gas viscosity
B.the gas density
C.the selection of fabric
D.all of the above
The value of Prandtl number for air is of the order of
A.1000
B.67
C.9.7
D.0.7
E.0.065
An ideal plate is defined as one where
A.the vapour and liquid leaving streams are in equilibrium
B.the vapour and liquid entering streams are in equilibrium
C.the vapour leaving stream is in equilibrium with the liquid entering stream
D.the vapour entering stream is in equilibrium with the liquid leaving stream
The operating pressure drops for a fabric filter are usually in the range of
A.0.2 to 0.5 in. H2O g
B.2 to 6 in. H2O g
C.8 to 60 in. H2O g
D.0.01 to 0.1 in. H2O g
When Fe2+ changes to Fe3+ in a reaction
A.it loses an electron
B.it gains an electron
C.it gains a proton
D.it loses a proton
At a location where g = 31.0 ft/s2 3 slugs is equivalent to how many pounds mass ?
A.90-00
B.93-00
C.0.01
D.96.522
