Chemical Engineering MCQs

6108 MCQs  (Page 518 of 611)

Attempt Chemical Engineering Quiz
In the manufacture of H3 PO4 (ortho); strong H2 SO4 leaching wet process as compared to electric furnace process___________________?
A. Uses lower grade phosphate rock
B. Requires lower capital investment in the plant
C. Produces lower purity acid
D. Is very costly
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Oxidation of ammonia is________________?
A. Exothermic
B. Endothermic
C. Non-catalytic
D. Autocatalytic
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There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant ?
A. Mercury
B. Arsenic
C. Aluminium
D. Lead
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On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because __________________?
A. Of clotting of blood
B. Of jamming of respiratory tract
C. It forms carboxyhemoglobin by combining with haemoglobin of blood, thereby making it
IncApable of absorbing oxygen
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In water treatment plant, zeolite process is used to remove the _____________ of water?
A. Acidity
B. Alkalinity
C. Hardness
D. Iron & zinc
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Disinfection of water is done to remove ______________________?
A. Color
B. Bad taste
C. Foul odour
D. Bacteria
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Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about _______________ decibels?
A. 105
B. 135
C. 160
D. 185
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The average thickness of ozone layer in stratosphere is about _______________ dobson unit (DU)?
A. 20
B. 230
C. 750
D. 1500
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CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing ________________ molecules of ozone?
A. 102
B. 105
C. 109
D. 1015
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The upper layer of atmosphere is called the ____________________?
A. Stratosphere
B. Troposphere
C. Ionosphere
D. None of these
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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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