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.Management Sciences
Category: Chemical Engineering Basics
Which of the following has the highest modulus of elasticity (about 7 × 106 kg/cm2) ?
A. High speed steel
B. Stainless steel
C. Tungsten carbide
D. Superalloys
Diamagnetic materials___________________?
A. Are magnetised by eddy currents only
B. Are non-magnetic and cannot be magnetised
C. Are magnetised in direction opposite to the magnetic field
D. Can be magnetised in one direction only
Electrometallurgy is not involved in the extraction of ___________________ from its ore?
A. Aluminium
B. Tin
C. Lead
D. Both B. & C.
In a furnace with heating element temperature at 1700°C, the dominant mechanism of heat transfer will be__________________?
A. Conduction
B. Radiation
C. Natural convection
D. Forced convection
Presence of nickel & chromium in steel does not raise its _________________?
A. Elastic limit
B. Machining properties
C. Ductility
D. Resilience
Which of the following has the least value of ultimate tensile strength (UTS) ?
A. Medium carbon steel
B. High carbon steel
C. Cast iron
D. Wrought iron
The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the________________________?
A. Resilience
B. Toughness
C. Ductility
D. Impact strength
Spark plug is provided in a/an_________________?
A. Engine having carburettor
B. Diesel engine
C. Compression ignition engine
D. Both B. & C.
________________ is a special constituent of chlorophyll without which photosynthesis is not possible ?
A. Calcium
B. Nitrogen
C. Phosphorous
D. Hydrogen
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