A. Transmit power hydraulically
B. Form a seal in compressors
C. Remove contaminants by flushing and to insulate transformers, switchgears etc
D. All of the above
✅ The correct answer is option D.
Basic Chemical Engineering MCQs
High endurance limit of carburised machine parts is because of the fact that carburisation
A. Suppresses any stress concentration produced in the parts
B. Enhances the yield point of the material
C. Introduces a compressive layer on the surface
D. Produces a better surface finish
✅ The correct answer is option C.
The maximum thickness of the metal which can be welded using ultrasonic welding is __________ mm.
A. 0.5
B. 3
C. 10
D. 25
✅ The correct answer is option B.
Shock resisting steels should possess high
A. Hardness
B. Toughness
C. Tensile strength
D. Wear resistance
✅ The correct answer is option C.
Heating of ferromagnetic materials to a temperature above Curie temperature makes it
A. Insulator for heat & electricity transmission
B. Ferritic
C. Behave like paramagnetic materials
D. Superconductor
✅ The correct answer is option C.
Exposure to __________ accelarates the degradation of plastics.
A. Ultraviolet radiation
B. High atmospheric temperature
C. High ambient temperature
D. Damp atmosphere
✅ The correct answer is option A.
L.D. converters are generally lined with
A. Magnesite
B. Fireclay
C. Chrome magnesite
D. Silica
✅ The correct answer is option C.
Sudden immersion/dipping of red hot steel bar in water makes it
A. Malleable & tough
B. Ductile & soft
C. Brittle & hard
D. None of these
✅ The correct answer is option C.
All modes of heat transfer i.e., conduction, convection & radiation occur in case of the
A. Condensation of steam in a partial condenser
B. Boiler furnace
C. Insulated pipe car raying high pressure steam
D. None of these
✅ The correct answer is option B.
The type of water filter normally employed/ preferred for treating small quantities of water in railway stations and individual industries is the __________ filter.
A. Rapid sand
B. Pressure
C. Gravity
D. Slow sand
✅ The correct answer is option B.