The hydrocarbon [A] adds one mole of hydrogen in the presence of a platinum catalyst to form n-hexane. When [A] is oxidised vigorously with `KMnO_(4)`, a single carboxylic acid containing three carbon atoms is isolated. Give the strucure of [A] and explain the reactions.

In the presence of platinum catalyst, hydrocarbon (A) adds hyrogen to form n-hexane. When hydrogen bromide is added to (A) instead of hydrogen, only a single bromo compound is formed. Which of the following is (A)?

A hgydrocarbon X adds on one mole of hydrogen to gives another hydrocarbon and also decolourises bromine water.X reacts with KMnO_(4) in presenece of acid to give two moles of the same carboxylic acid.The structure of X is:

A compound X is formed by the reaction of a carboxylic acid C_(2)H_(4)O_(2) and an alcohol in the presence of a few drops of H_(2)SO_(4) .The alcohol on oxidation with alkaline KMnO_(4) followed by acidification gives the same carboxylic acid as used in this reaction .Give the names and structures of : The compound X. Also write the reaction.

A compound 'X' is formed by the reaction of carboxylic acid C_(2)H_(2)O_(4) and an alcohol in the presence of conc. H_(2)SO_(4) . This alcohol on treating with alkaline KMnO_(4) gives the sae carboxylic acid used in the reaction. Give the name structure of carboxylic acid and alcohol. Write the reaction involving formation of 'X'.

A carbon compound 'P' on heating with excess conc. H_(2)SO_(4) forms another carbon compound 'Q' which on addition of hydrogen in the presence of nickel catalyst forms a saturated carbon compound 'R'. One molecule of 'R' on combustion, forms two molecules of carbon dioxide and three molecules of water. Identify P, Q and R and write chemical equations for the reactions involved.

An organic compund (A) having molecular formula C_(4)H_(8) , decolourises bromine water. (A) when treated with carbon monoxide and hydrogen in the presence of a suitable catalyst undergoes oxo-reaction, to give aldehydes (B) and (C). (B) on reduction forms pentan-1-ol, while 2-methyll butan-1-ol is obtained by the reduction of (C). Give the structural formulae of (A),(B) and (C)