Chemical Environmental Engineering Mcqs

Q.  High noise levels produced during operation of fans and compressors can be reduced by using__________________?

a. Mufflers (silencers)
b. Acoustic absorbent
c. Lagging of noisy duct
d. None of these


ANSWER: See Answer
 
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MCQs:  Threshold limit value (TLV) of CO in air is _____________ ppm?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Ethanolamine is an absorbent used for the removal of _____________ from air/gas?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
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Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  Presence of nitrates in water in excess of 50 ppm causes________________?
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MCQs:  Black smoke coming out of the chimney of a furnace is an indication of the use of ______________ in the furnace?
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MCQs:  Biological oxidation ponds remove organic matters present in the polluted water by _______________?
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MCQs:  Which of the following plants does not emit appreciable amount of SO2 in atmosphere ?
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MCQs:  The pH value of potable water should be between____________________?
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MCQs:  Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm) ?
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MCQs:  Sulphur dioxide present in the industrial chimney exhaust gases causes____________________?
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MCQs:  Corrosion in boilers can be prevented by _________________?
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MCQs:  Fine grit present in sewage is removed in the _____________ during sewage treatment?
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MCQs:  Out of the following, TLV of _______________ is maximum (about 500 ppm)?
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MCQs:  Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about ______________ ppm (parts per million)?
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MCQs:  As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is _____________ μg/m3.(μg-microgram)?
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MCQs:  Presence of _____________ bacteria in water causes disease like typhoid?
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MCQs:  In large thermal power stations very fine particulates present in flue gas are removed by___________________?
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MCQs:  Which of the following is the most lethal water pollutant ?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  The detrimental effect on organism and water quality with temperature rise of aquatic system is the reduction of _____________ of water?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts