Which one of the following compounds gives carboxylic acid with `HNO_(2)`?

Which one of the following compound gives carboxylic acid with HNO_(2) ?

Which one of the following gives carboxylic acid on reaction with HNO_(2)

Which one of the following alcohols on oxidation gives carboxylic acid with lesser number of carbon atoms?

Which of the following gives carboxylic acid when treated with base

Which of the following compounds does not liberate nitrogen with HNO_(2) ?

Which of the following represents a carboxylic acid ?