Q. The protection of earth from harmful rays of the sun is done by

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Q. CFCs stands for

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Q. CFCs are not dangerous on earth, the problem starts when they start diffusing in

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Q. Non-stick lining of a sauce pan is due to halogen-polymer named as

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Q. Teflon is the trade name for

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Q. Each chlorine ion tends to destroy oz1 molecules in an amount

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Q. Chemically chlorofluorocarbons are

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Q. Introducing a halogen atom into an alkene can greatly reduce its

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Q. Volatile CFCs are used as

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Q. The monomer which is used to make Poly Vinyl Chloride (PVC) is called

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Q. The bond breakage in Chlorofluorocarbons (CFC) molecules releases highly reactive

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Q. Chlorofluorocarbon (CFC) is non-toxic and non-flammable was said by chemist

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Q. Chlorine reacts with cold hydroxides ions in a disproportionation reaction and results in

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Q. Halogenated hydrocarbons are used in

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Q. Upon reaction of Cl₂(aq) and H₂O (l), HCl and HClO (aq) is formed, resulting in the killing of

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Q. In chlorination of water, reactive oxygen atoms are produced by

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Q. Oxidation of hydrogen halides (HF, HCl, HBr, HI) becomes

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Q. Sulfuric acid is manufactured with the help of

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Q. In the periodic table, element in the second row of transition elements beneath titanium is

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Q. Elements found in D-block of the periodic table are known as

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