In the Kraft (sulphate) process for the paper manufacture, the digestor is made of________________?
A. Cast iron
B. Stainless steel
C. Karbate carbon
D. Wrought iron
Materials and Construction
Balls in a ball mill are usually made of__________________?
Balls in a ball mill are usually made of__________________?
A. Steel
B. Cast iron
C. Stainless steel
D. Bronze
Spark plugs, ignition tubes and electrodes are made of nickel ____________ alloys?
Spark plugs, ignition tubes and electrodes are made of nickel ____________ alloys?
A. Beryllium
B. Manganese
C. Copper
D. Iron
Diamagnetic materials are magnetised________________?
Diamagnetic materials are magnetised________________?
A. Strongly
B. Only slightly
C. With eddy currents only
D. In a direction opposite to that of the applied field
Hydrochloric acid is stored in a _____________ steel vessel?
Hydrochloric acid is stored in a _____________ steel vessel?
A. Lead lined
B. Rubber lined
C. Glass lined
D. Stainless
For spinning viscose rayon, the extrusion spinnerettes are made of ___________________?
For sning viscose rayon, the extrusion snerettes are made of ___________________?
A. Platinum or gold alloys
B. High carbon steel
C. Aluminium
D. Nickel
Atmospheric corrosion of metals result from their________________?
Atmospheric corrosion of metals result from their________________?
A. Slow oxidation
B. Fast oxidation
C. Fast hydration
D. Slow dehydration
Babbitt metal used for bearings is a ____________base alloy?
Babbitt metal used for bearings is a ____________base alloy?
A. Tin
B. Lead
C. Aluminium
D. Copper
Ability of a material to ______________ is indicated by its damping capacity?
Ability of a material to ______________ is indicated by its damg capacity?
A. Withstand compression
B. Absorb vibration
C. Absorb shock
D. None of these
Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with_____________________?
Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with_____________________?
A. Karbate
B. Lead or glass
C. Fireclay bricks
D. PVC