Correct option is A
The correct answer is: (a) chlorine
Explanation:
Gammaxene (Lindane), DDT, and bleaching powder are important compounds that contain chlorine.
Chlorine plays a crucial role in their chemical properties and uses, such as in pesticides and disinfectants.
Information Booster:
Gammaxene (Lindane): An organochlorine insecticide used for pest control.
DDT (Dichlorodiphenyltrichloroethane): A chlorinated pesticide widely used in agriculture and for malaria control.
Bleaching powder (Calcium oxychloride): Contains chlorine; used as a disinfectant and bleaching agent.
Chlorine compounds are often effective disinfectants and pesticides due to their reactivity.
Excessive use of chlorinated pesticides has raised environmental concerns due to bioaccumulation and toxicity.
Chlorine is a halogen, highly reactive and used in many industrial applications.
Additional Information:
Nitrogen: Important for fertilizers and explosives but not part of these compounds.
Sulphur: Used in vulcanisation and sulfuric acid but not in these compounds.
Phosphorus: Found in fertilizers and matches but not related to these substances.