The chemical (Ethyl Mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of:_______?
Correct answer: D. Sulphur
- A. Bromine
- B. Fluorine
- C. Chlorine
- D. Sulphur
Explanation
Ethyl mercaptan, CH3CH2SH, contains a thiol group with sulfur, so sulfur gives the compound its characteristic odour. Students may choose chlorine because LPG itself is associated with safety chemicals, but the odorant is an organosulfur compound.
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About Functional Groups
Functional groups are specific atoms or atom groups that determine the characteristic reactions and properties of organic compounds. Coverage includes alkenes, alkynes, halo, hydroxyl, ether, carbonyl, carboxyl, ester, amino and nitro groups, together with their structures, nomenclature and related homologous series.
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