A. H2O
B. C12
C. O3
D. CH4
Submitted by: Ashfaque Ali Khoso
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B. ZNO2
C. Zn2(OH)3
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A. Na3CO2
B. CNa2O3
C. Na2CO3
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A. C2H6O
B. CaSO4
C. C2H4O2
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A. NaAlO2
B. H2O
C. Al2O3
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A. Prevent global warming
B. Filter out ultraviolet rays
C. Absorb pollution
D. All of the above - Most of the ozone in the atmosphere is concentrated in the _____________?
A. Mesosphere
B. Troposphere
C. Stratosphere
D. ionosphere - The ozone molecule contains which type of bonding__________?
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B. Covalent bond
C. Both A and B
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- Composition of Ozone layer?
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B. Stratosphere
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