@⇒ Short cut notes / rapid fire notes / best theory of Environmental Engineering ⇒ Chemical Engineering Multiple Choice Questions / Objective type questions, MCQ's, with question and answers, download free PDF, short cut notes, rapid fire notes, best theory

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1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. .

2-Wrong options are also given but dont concentrate there, Right answer is in bold format.

Q1 ⇒ Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants ?
SO₂
[other wrong options] [Discuss in forum] 14 -6

Q2 ⇒ Main pollutants released from iron & steel industry is
CO, CO₂ & SO₂.
[other wrong options] [Discuss in forum] 9 -4

Q3 ⇒ Presence of excess flourine in water causes
fluorosis
[other wrong options] [Discuss in forum] 11 -3

Q4 ⇒ The widest explosive limit is of __________ , thereby making it the most explosive gas.
acetylene
[other wrong options] [Discuss in forum] 10 -4

Q5 ⇒ Most of the atmospheric air pollutants are present in large quantity in
trophosphere
[other wrong options] [Discuss in forum] 8 -4

Q6 ⇒ Dissolved oxygen content in river water is around __________ ppm.
5
[other wrong options] [Discuss in forum] 6 -4

Q7 ⇒ Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about __________ decibels.
90
[other wrong options] [Discuss in forum] 5 -1

Q8 ⇒ Maximum permissible turbidity in potable water is __________ ppm.
10
[other wrong options] [Discuss in forum] 6 -1

Q9 ⇒ __________ can not control the noise pollution.
Green house gases
[other wrong options] [Discuss in forum] 4 -1

Q10 ⇒ Presence of volatile compounds like gasoline, oil, alcohol, ether etc. in municipal sewers may cause
explosion
[other wrong options] [Discuss in forum] 4 -2

Q11 ⇒ In sewage treatment, the detention period allowed for oxidation ponds ranges from __________ weeks.
4 to 5
[other wrong options] [Discuss in forum] 3 -1

Q12 ⇒ The earth's atmosphere is an envelope of gases present upto a height of about __________ kms.
200
[other wrong options] [Discuss in forum] 3 -3

Q13 ⇒ Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm) ?
Carbon monoxide
[other wrong options] [Discuss in forum] 4 -1

Q14 ⇒ Which of the following is not a source of ozone emission in the atmosphere ?
Refrigerators.
[other wrong options] [Discuss in forum] 4 -3

Q15 ⇒ The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the
both (b) and (c)
[other wrong options] [Discuss in forum] 4 -1

Q16 ⇒ Solid content in most of the domestic sewage is about __________ percent.
0.1
[other wrong options] [Discuss in forum] 4 -2

Q17 ⇒ Carbon monoxide is a pollutant, which causes
asphyxiation (suffocation) leading to death.
[other wrong options] [Discuss in forum] 4 -1

Q18 ⇒ Which of the following is not an air pollutant ?
Ozone
[other wrong options] [Discuss in forum] 4 -5

Q19 ⇒ The type of bacteria which is active in trickling filter during biological treatment of sewage is the __________ bacteria.
aerobic
[other wrong options] [Discuss in forum] 5 -1

Q20 ⇒ The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is
cavitation.
[other wrong options] [Discuss in forum] 4 -1

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