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.Management Sciences
Category: Chemical Engineering Basics
__________________ of air does not increase with increase in temperature?
A. Density
B. Thermal diffusivity
C. Viscosity
D. Thermal conductivity
Pick out the wrong statement?
A. Complete unity of command exists in a line organisation
B. Line organisation is net suitable for expansion and growth of an industry
C. In line and staff organisation, “line” executes and “staff directs
D. None of these
The thermodynamic law, PVy = constant, is not followed by the __________________?
A. Free expansion of an ideal gas
B. Adiabatic expansion of steam in turbine
C. Adiabatic compression of air
D. Ideal compression of air
Ammonia leakage in the refrigeration system is detected by_________________?
A. Sulphur stick, which on detection gives white smoke
B. Using chemical reagents
C. Its smell
D. Soap solution
Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?
A. Small punches, broaches reamers and springs
B. Cutlery, screws, rivets and files
C. Mandrels, twist drills, small lathe tools and razors
D. Forgings like can shaft, structural steel plate, threading dies and drawing dies
The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is___________________?
A. Full annealing
B. Bright annealing
C. Patenting
D. None of these
Lead is added to 60:40 brass primarily to improve_________________?
A. Machinability
B. Corrosion resistance
C. Fluidity
D. Strength
Limestone is added in the blast furnace (during pig iron manufacture) to______________________?
A. Form slag by combining with impurities
B. Supply heat by undergoing exothermic reaction with impurities
C. Reduce the coke consumption
D. Reduce slag viscosity
X-rays are__________________?
A. Positively charged
B. Negatively charged
C. Neutral
D. Of higher wavelength than visible light
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