Chapter 23

The IUPAC name of (a) 4,4 - dimethyl-5-diethyl pentane (b) 5,5 -diethyl \(-4,4\)-dimethyl pentane (c) 3 -ethyl \(-4,4\)-dimethyl heptane (d) 1,1 -diethyl-2, 2 -dimethyl pentane

The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is (a) \(-\mathrm{COOH},-\mathrm{SO}_{3} \mathrm{H},-\mathrm{CONH}_{2},-\mathrm{CHO}\) (b) \(-\mathrm{SO}_{3} \mathrm{H},-\mathrm{COOH},-\mathrm{CONH}_{2},-\mathrm{CHO}\) (c) \(-\mathrm{CHO},-\mathrm{COOH},-\mathrm{SO}_{3} \mathrm{H},-\mathrm{CONH}_{2}\) (d) \(-\mathrm{CONH}_{2},-\mathrm{CHO},-\mathrm{SO}_{3} \mathrm{H},-\mathrm{COOH}\)

The IUPAC name of neopentane is: (a) 2,2 - dimethylpropane (b) 2-mehylpropane (c) 2,2 - dimethylbutane (d) 2 - methylbytane

Out of the following, the alkene that exhibits optical isomerism is (a) 3 - methyl \(-2\) - pentene (b) 4 - methyl \(-1\) - pentene (c) 3 - methyl \(-1\) - pentene (d) 2 - methyl \(-2\) - pentene

Identify the compound that exhibits tautomerism. [2011] (a) Lactic acid (b) 2 - Pentanone (c) Phenol (d) 2- Butene