1.

Which of the following compounds have isopropyl groupA. 2,2,3,3-tetramethyl pentaneB. 2,2-dimethyl butaneC. 2,2,3-trimethylD. 2-methyl pentane

Answer» Correct Answer - D
Isopropyl group is `CH_(3)-CH-CH_(3)` On writing structures for various options we get the following out of which (D) has isopropyl group
(A) `CH_(3)-CH_(3)C_(2)-Cl-ClCH_(3)`
(B) `CH_(3)CH_(2)CH_(2)-C-CH_(3)`
(C ) `CH_(3)-CH_(2)-overset(CH_(3))overset("| ")underset(CH_(3))underset("| ")("C ")H-C-CH_(3)`
(D) `CH_(3)-CH_(2)-CH_(2)-CH-CH_(3)`


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