Chemical Environmental Engineering Mcqs

Q.  Noise level in a quiet private business office is about _____________ decibels?

a. 25
b. 50
c. 70
d. 85


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Lung cancer & DNA breakage are the major ill effects of excessive ozone exposure to human beings. Ozone layer depletion in the atmosphere is mainly caused by the presence of________________?
Category: Chemical Engineering Mcqs,   Published by: T-Code Scripts
MCQs:  The function of skimming tank in sewage treatment is to remove _____________ substances?
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MCQs:  A standard test for determination of hardness in water is termed as ______________ test?
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MCQs:  Removal of ______________ results from the disinfection of water?
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MCQs:  Which of the following is not a natural source of air pollution ?
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MCQs:  Which of the following is the most widely used disinfectant in water treatment ?
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MCQs:  There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth’s surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about _____________ °C/km?
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MCQs:  Threshold limit value (TLV) of CO in air is _____________ ppm?
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MCQs:  Ethanolamine is an absorbent used for the removal of _____________ from air/gas?
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MCQs:  Pick out the wrong statement ?
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MCQs:  Which is the most efficient dust removal equipment for removal of submicronic dust particles from blast furnace gas ?
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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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