Environmental Chemistry

A. 5 to 200 kg
B. 20-200 kg
C. 200-400 kg
D. 30-400 kg

A. iron
B. fertilizer
C. paper
D. none

A. Biosphere
B. Ecosystem
C. Both a & b
D. Hydrosphere

A. Nox
B. NO2
C. N2O3
D. NO

A. 60
B. 70
C. 80
D. 90

A. oceans
B. glaciers & icecaps
C. fresh water lakes and ponds
D. All have equal distribution

A. KMnO4
B. Alums
C. Ozone
D. All

A. chromium III
B. chromium IV
C. chromium V
D. chromium VI

A. 2
B. 3
C. 4
D. 5

A. alum
B. nickel sulphate
C. copper sulphate
D. barium sulphate