Indian Institute of Foreign Trade 2015 Solved Paper

(a) Cacophony means a harsh discordant mixture of sounds and euphony means the quality of being pleasant to the ear. These two words are antonyms. With regards to antonyms, in option (a), 'belligerent' means hostile and aggressive. 'Serene' means unperturbed or peaceful. None of the other options are even close to being antonyms.