alleryWhich atom or group of atoms in a molecule is mainly responsible for its characteristic chemical properties?
ALocant number
BCarbon skeleton
CRoot word
DFunctional group
Answer & Solution
Correct answer: D. Functional group
1. The carbon-hydrogen framework is relatively unreactive and decides physical properties.
2. A functional group is an atom or group of atoms that gives a molecule its characteristic chemical properties.
3. Root word and locant number are parts of the IUPAC name, not reactive groups.
4. Hence the functional group is responsible.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 11 "Carbon and its Compounds", p.165_
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