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.Management Sciences
Category: Chemical Engineering Basics
Globular form of cementite is formed during the _________________ process ?
A. Spheroidising
B. Hardening
C. Annealing
D. Normalising
Which of the following is an unconventional source of energy ?
A. Thermal power
B. Hydroelectric power
C. Nuclear-fusion power
D. Solar power
Chlorine acts as a bleaching agent only in the presence of ______________________?
A. Dry air
B. Pure oxygen
C. Moisture
D. Sunlight
Which of the following metals reacts violently with water ?
A. Mercury
B. Sodium
C. Calcium
D. Magnesium
Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that_________________?
A. Pure oxygen has been used for combustion
B. Nitrogen percentage in the fuel is very high
C. Excess air has been used for combustion
D. Hydrogen is not present in the fuel
Friction factor for fluid flow in pipe does not depend upon the________________?
A. Pipe length
B. Pipe roughness
C. Fluid density & viscosity
D. Mass flow rate of fluid
In a neutral solution__________________?
A. H+ ions are absent
B. OH- ions are absent
C. Both H+ and OH- ions are present in very small but equal concentration
D. None of these
In ________________ process, there is an increase in entropy with no degradation of energy ?
A. Isothermal expansion
B. Isochoric heat addition
C. Polytropic expansion
D. Isobaric heat addition
Water-tube boiler is the one, in which _____________________?
A. Water passes through tubes and flue gases around it
B. Tube carrying hot flue gases are immersed in a pool of water
C. Tubes are placed in vertical position
D. None of these
Answer: Option A
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