Chemical Engineering MCQs

6108 MCQs  (Page 62 of 611)

Attempt Chemical Engineering Quiz
Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal_________________?
A. Tensile strength
B. Compressive strength
C. Young’s modulus
D. Thermal co-efficient of expansion
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Out of the following, the most malleable material is________________?
A. Copper
B. Aluminium
C. Wrought iron
D. Lead
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Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is__________________?
A. Black
B. Silver grey
C. Green
D. Yellow
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The ‘transition temperature’ for ductile to brittle behavior of steel increases with increase in the _____________ content in steel?
A. Carbon
B. Manganese
C. Both a nor b
D. Neither a nor b
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Increasing the carbon content of steel_________________?
A. Reduces the upper shelf energy
B. Increasing the ductility transition temperature
C. Decreases brittleness
D. Decreases hardness
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Spark plug is provided in a/an_________________?
A. Engine having carburettor
B. Diesel engine
C. Compression ignition engine
D. Both b. & c.
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A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about ____________________ °C?
A. 370
B. 340
C. 320
D. 300
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For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be _________________ toys ?
A. 250
B. 500
C. 1000
D. 3000
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In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is ______________ °C?
A. 20
B. 60
C. 120
D. ∞
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Dislocation cross-slip is difficult in those materials, which have___________________?
A. Large number of slip systems
B. High work hardening rate
C. Coarse grain size
D. Low stacking fault energy
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Word of the Day
24 Jul
Untenable
(especially of a position or view) not able to be maintained or defended against attack or objection.
ناقابل مدافعت، غیر مستحکم، جو دلیل سے ثابت نہ ہو سکے

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