NCERT Class XII Chemistry
Chapter - Haloalkanes and Haloarenes
Questions with Solutions
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Question : 13
Total: 31
Give the uses of freon 12, DDT, carbon tetrachloride and iodoform.
Solution:
(i) Freon 12 ( C C l 2 F 2 )
• used in aerosol propellants
• refrigeration
• air-conditioning.
(ii) DDT (p, p′- dichlorodiphenyltrichloroethane) is
• used as an insecticide,
• mainly used against mosquitoes.
(iii) Carbontetrachloride(CCl4) is used
• in manufacture of refrigerants and propellants for aerosol cans
• in synthesis of chlorofluorocarbons
• as degreasing agent
• as cleansing agent • as a solvent in laboratories
(iv) Iodoform( C H I 3 )
• used in aerosol propellants
• refrigeration
• air-conditioning.
(ii) DDT (p, p′- dichlorodiphenyltrichloroethane) is
• used as an insecticide,
• mainly used against mosquitoes.
(iii) Carbontetrachloride(CCl4) is used
• in manufacture of refrigerants and propellants for aerosol cans
• in synthesis of chlorofluorocarbons
• as degreasing agent
• as cleansing agent • as a solvent in laboratories
(iv) Iodoform
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