Environmental Engineering in CE MCQs
Practice free Environmental Engineering in CE multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 307 questions — no login required.
Question 64hard
In water treatment, alum [Al2(SO4)3] is used for the process of
Question 65hard
Out of the following, TLV of __________ is maximum (about 500 ppm).
Question 66medium
During sewage treatment, the sewage is subjected to __________ treatment in Imhoff tank.
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Question 67medium
Fine grit present in sewage is removed in the __________ during sewage treatment.
Question 68medium
Septic tanks are used for the __________ of the deposited solids.
Question 69hard
Average human body contains about __________ percent water by weight.
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Question 70hard
Maximum allowable concentration of CO2 in air for safe working is __________ ppm (parts per million).
Question 71hard
Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million).
Question 72hard
Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre.