Which of the following acids on decarboxylation gives Isobutane?A)2,2-Dimethyl butanoic acidB)2,2-dimethyl propanoic acidC)3-Methyl pentanoic acidD)2-Methyl butanoic acid

The correct answer is D) 2-Methyl butanoic acid.

When 2-Methyl butanoic acid undergoes decarboxylation, it forms Isobutane. Decarboxylation is a chemical reaction in which a carboxylic acid loses a carbon dioxide molecule, resulting in the formation of an alkane.

Let's examine the other options:

A) 2,2-Dimethyl butanoic acid: On decarboxylation, it would give 2,2-Dimethyl butane, not Isobutane.

B) 2,2-dimethyl propanoic acid: On decarboxylation, it would give 2,2-dimethyl propane, not Isobutane.

C) 3-Methyl pentanoic acid: On decarboxylation, it would give 3-Methyl pentane, not Isobutane.

Therefore, the correct acid that gives Isobutane on decarboxylation is D) 2-Methyl butanoic acid.