Answer: B Benevolent (charitable, kind) and grasping (greedy)..are antonyms. Euphonious(sounding pleasant) and discordant (cacophonous) are also antonyms.
Answer: C All pairs have synonyms but 'consumable'(intended to be used up and then replaced) has nothing to do with 'portable'(easily carried) Portable is different with potable(drinkable).
Q. No. 6:
Identify the pair which does not exhibit the same relationship as the capitalized pair:- BOUNTIFUL : PLENTITUDE