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Chemical Engineering Basics MCQs

Chemical Engineering Objective Questions

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939. Thermal conductivity of a material does not depend upon its
A. Mass
B. Volume
C. Surface area
D. All of the above
Discussion
940. Scaling occurs in boiler tubes due to the fact that, the solubility of Ca(OH)2 __________ with increasing temperature.
A. Increases
B. Decreases
C. Shows inversion of solubility
D. None of these
Discussion
941. Iron has got __________ isotopes.
A. No
B. Four
C. Three
D. Two
Discussion
942. A friction lighter is normally used for lighting gas welding torch, because of the reason that
A. Its initial cost is very low
B. Duration of spark created is very small
C. Safety of welder is ensured
D. It is easier to operate & maintain
Discussion
943. During sensible heating of humid air
A. Relative humidity increases
B. Dew point remains constant
C. Dry bulb & wet bulb temperature increases
D. Both 'b' & 'c'
Discussion
944. __________ the exhaust gas is an indication of the incomplete combustion of fuel.
A. Low temperature of
B. High temperature of
C. High % of CO in
D. High % of CO2 in
Discussion
945. Moist climate is the most favourable factor in the site selection far a
A. Steel plant
B. Textile factory
C. Petroleum refinery
D. Coke oven battery
Discussion

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