Soda ash is also called
A.sodium carbonate
B.sodium hydroxide
C.sodium bicarbonate
D.sodium oxide
Category: Chemical Engineering Mcqs
Galvanised iron is
A.easy to be painted
B.of better look
C.protected from rusting
D.harder
Which one of the following materials will have highest value of thermal conductivity?
A.Steel
B.Aluminium
C.Brass
D.Copper
E.Lead
The binary diffusivity in gases at atmospheric conditions is of the order of
A.10-1 cm2/sec
B.10-5 cm2/sec
C.105 cm2/sec
D.10-7 cm2/sec
Entrainment in a distillation column
A.is defined as the liquid carried with the vapour from one tray to the tray above
B.is detected by decrease in Murphree plate efficiency
C.may be detrimental since it can carry non-volatile constituents upward
D.all of these answers
In the catalytic reforming of naphtha the dehydrogenation of naphthenes gives hydrogen and
A.paraffins
B.aromatics
C.branched chain paraffins
D.none of the above
Heat is transferred from an insulated pipe to the surrounding still air mainly by
A.Conduction
B.Free convection
C.Forced convection
D.Radiation
E.All above together
An increase in the carbon content of a steel
A.increases its strength
B.decreases its strength
C.increases its ductility
D.none of the above
For a fabric filter gas-to-fabric ratio is expressed as cubic feet per minute per square foot fabric surface area. As the gas-to-fabric ratio becomes larger
A.the size and cost of a fabric filter is correspondingly increased
B.the size and cost of a fabric fulter is correspondingly decreased
C.the size and cost of a fabric filter remains unaffected
The volume of nucleus is about
A.10-12 times the volume of atom
B.1012 times the volume of atom
C.10-10 times the volume of atom
D.10-8 times the volume of atom
