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.Management Sciences
Category: CHEMICAL ENGINEERING
Which of the following is artificially produced as it does not occur in nature ?
A. Uranium-235
B. Uranium-233
C. Plutonium-239
D. Both B. and C.
The transfer function of a second order system is _____________________?
A. 1/(T2s2 + 2ξTs + 1)
B. 1/(T2s2 + 2Ts + 1)
C. 1/(T2s2 + 2ξT + 1)
D. None of these
Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog ?
A. Nitrogen oxides
B. Hydrocarbons
C. Both A. & B.
D. Carbon monoxide
Large tonnage of refractory bricks are dried in a_____________________?
A. Shaft furnace
B. Rotary hearth furnace
C. Tunnel kiln
D. Muffle furnace
Measurement of pressure in ammonia reactor is done by __________________?
A. Bourdon gauge
B. U-tube manometer
C. Inclined tube manometer
D. Pirani gauge
Oxygen cylinders used for autogenous (cutting/welding) purposes are ___________________?
A. Seamless & made of steel
B. Heat treated before use
C. Made by sand casting
D. Welded steel cylinders
Gross heating value of coal is ______________ the net heating value?
A. Higher than
B. Lower than
C. Same as
D. None of these
A coal with high ash content___________________?
A. Has higher calorific value
B. Is harder and stronger
C. Is not subjected to washing
D. Has low quantity of mineral matter
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