- (A) 5
- (B) 100
- (C) 1000
- (D) 2000
Exam preparation MCQs with answers
Practice Pakistan's most useful MCQs for competitive exams
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Latest MCQs
- (A) Filtration
- (B) Coagulation
- (C) Sedimentation
- (D) Disinfection
- (A) Ozone
- (B) Photochemical smog
- (C) Sulphur dioxide
- (D) All
- (A) Dust catcher (gravity type)
- (B) Cyclone separator
- (C) Bag filter
- (D) Hollow wet scrubber
- (A) 25
- (B) 50
- (C) 80
- (D) 120
- (A) 1
- (B) 3
- (C) 7
- (D) 20
- (A) Methane
- (B) Nitrous oxide
- (C) Chlorofluoro carbons (CFC)
- (D) All
- (A) Turbidity
- (B) Color (Hazen)
- (C) Total solids
- (D) All
- (A) Decreases
- (B) Increases
- (C) Remain constant
- (D) May increase or decrease; depends on the chemical characteristics of polluted water
- (A) Global warming
- (B) Green house
- (C) Atmospheric effect
- (D) Ionosphere

