A. Aluminium sulphate
B. Ferrous sulphate
C. Hydrated lime
D. Chloramine
Pick out the one which is not a chemical coagulant ? Read More »
Chemical Environmental Engineering A. Carbonates
B. Bi-carbonates
C. Iron & manganese
D. Arsenic
A. 1
B. 4
C. 8
D. 12
A. Suspended inorganic matter
B. Dissolved solids
C. Floating solids
D. Dissolved gases
Turbidity of water is an indication of the presence of__________________? Read More »
Chemical Environmental Engineering A. Dust & mists
B. Smoke & fumes
C. Photochemical smog & soot
D. None of these
A. Idle running
B. Acceleration
C. Cruising
D. Deceleration
A. Respiratory disease (e.g. asthma)
B. Asphyxiation (suffocation) leading to death
C. Retardation in crop growth
D. Damage to building materials like marble
Carbon monoxide is a pollutant, which causes_________________? Read More »
Chemical Environmental Engineering A. Filtration
B. Coagulation
C. Sedimentation
D. Disinfection
In water treatment, alum [Al2(SO4)3] is used for the process of __________________? Read More »
Chemical Environmental Engineering A. Ozone
B. Photochemical smog
C. Sulphur dioxide
D. All A., B. & C.
Which of the following is not a secondary air pollutant ? Read More »
Chemical Environmental Engineering A. 25
B. 50
C. 80
D. 120
