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.Management Sciences
Category: Chemical Engineering Basics
Natural water contains approximately ______________ percent of heavy water?
0
A. 0.015
B. 0.71
C. 1.2
D. 3.5
Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part ?
A. Anodising
B. Tempering
C. Carburising
D. Annealing
Laser is a device to produce___________________?
A. Gamma rays
B. Microwaves
C. A beam of white light
D. A beam of coherent light
Which of the following phenomenon will exhibit the minimum heat transfer ?
A. Boiling
B. Forced convection in air
C. Free convection in air
D. Conduction in air
Powder metallurgy technique is used in the production of ____________________ tools ?
A. Tungsten carbide
B. High carbon steel
C. High speed steel
D. Drilling
The hardenability of steel decreases with__________________?
A. Decrease in dislocation density
B. Increase in solutionising temperature
C. Increase in strength
D. Decrease in grain size
Maximum hardenability of steel depends upon its_______________________?
A. Chemical composition
B. Carbon content
C. Grain size
D. Alloying elements content
Constituents of stellite are ____________________?
A. Zinc, copper & nickel
B. Cobalt, chromium & tungsten
C. Zinc, aluminium & nickel
D. Nickel, cobalt & vanadium
A dense structure of grinding wheel is not used for the_____________________?
A. Ductile material
B. Hard materials
C. Brittle materials
D. Finishing cuts
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