1. My belief that she is a talented researcher has been _______ by the numerous awards she has won over the last year.   vindicated   truncated   impeded   scrutinized   usurped   Hint Hint       2. It is a Herculean task to nab the criminals when they are in _______ with politicians.   profusion   circumlocution   affirmation   coercion   collusion   Hint       3. If you _______ from the main theme, you may be in danger of not completing your lecture in time.   linger   preclude   digress   disperse   subside   Hint       4. Being an _______, she enjoyed studying philosophy all by herself rather than going for a party with her friends.   opportunist   altruist   introvert   optimist   anarchist   Hint       5. It is better to be _______ while writing essays lest you lose your readers with _______.   verbose..rancor   voluble..adulation   pithy..penury   terse..tenacity   succinct..verbiage   Hint       6. Nitric acid is a colorless _______ liquid with a sharp choking odor, and therefore requires to be _______ stored in tightly-stoppered glass bottles to prevent the fumes from escaping.   viscous..occasionally   homogeneous..particularly   acerbic..instantly   volatile..prudently   viscid..unwittingly   Hint       7. The pigment was introduced with the polymer pellets in the hopper and mixed in the heated barrel of the extruder to obtain _______ melt.   a homogeneous   an ingenuous   an indigenous   an inert   a heterogeneous   Hint