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JEE Main Chemistry Previous Year Questions With Solutions onIUPAC Nomenclature
1. The IUPAC name of neopentane is :
(1) 2–methylpropane
(2) 2, 2–dimethylbutane
(3) 2–methyl butane
(4) 2, 2–dimethylpropane
Solution:
IUPAC name is 2,2- dimethyl propane.
Hence option (4) is the answer.
2. The IUPAC name of the compound is:
(1) 1, 2-Epoxy propane
(2) Propylene oxide
(3) 1, 2–Oxo propane
(4) 1, 2–Propoxide
, JEE Main Chemistry Previous Year Questions With Solutions on
IUPAC Nomenclature
Solution:
Hence option (1) is the answer.
3. The IUPAC name of CH3COCH(CH3)2 is
(1) 2-methyl-3-butanone
(2) 4-methylisopropyl ketone
(3) 3-methyl-2-butanone
(4) Isopropylmethyl ketone
Solution:
The longest chain is of four carbon. The Keto group is the functional group. The numbering will start
from left carbon as the functional group should also have the lowest numbering. The substituent
methyl group will be at the third carbon. So the IUPAC name is 3-Methyl-2-butanone.
Hence option (3) is the answer.
4. The IUPAC name of the compound
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