Category: Environmental Chemistry

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

A. boron
B. iron
C. copper
D. carbon

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

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

A. NH2Cl
B. NHCI2
C. NCI2
D. all of the above

A. Cl2
B. O3
C. ClO2
D. both B & C

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

A. the amount of ozone layer is greater in the region close to the equator
B. ozone acts as filter for UV radiations
C. in the equatorial region it acts as pollutant
D. CFCs play effective role in removing O3 in the stratosphere

A. H2SO4
B. HNO3
C. both A and B
D. none

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