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CHEMISTRY SOLVED MCQs

1. Water is oxidized to oxygen by_____________. a. H2O2           b. KMnO4        c.ClO2                d. fluorine 2. Oxygen does not react with; a. Na            b. P             c. Cl                   d. S 3. A variety of water which contains soluble salts of Ca and Mg is known as; a. soft water            b. heavy water         c. conductivity water           d. hard water 4. 10. Which one of the following substances has the highest proton affinity? a. NH 3           b. H 2 O          c. PH 3             d. H 2 S 5. The gas O 3  (ozone) cannot...