1. Scientific investigations of fluid flow behavior around objects like high-speed aircrafts are complex; however, the systems are _______ when experiments are performed in scaled-down versions such as wind tunnels.   permeable   malleable   tractable   turbulent   implacable   Hint Hint       2. He believes in getting value for money, and it would be inappropriate to interpret his _______ as _______.   indolence..indigence   lassitude..levity   insolence..intransigence   diffidence..paucity   frugality..penury   Hint       3. Any increase in coal-fired furnaces beyond a particular level necessitates greater _______ the fossil fuels; thus, the capability of an economy to effectively manage energy resources depends partially on _______ the number of industrial fired heaters.   expenditure on..budgeting   depletion of..renewing   recourse to..restricting   trust in..enhancing   yield from..conforming   Hint       4. It is economically beneficial to increase the capacity of an industrial plant when the revenue can be increased without a _______ increase in the cost of production.   compliant   commensurate   warranted   controlled   precarious   Hint       5. Even though the region was prone to hurricanes, the _______ of the tornado last year was _______.   ferocity..unprecedented   portent..poignant   inevitability..mercurial   probity..portentous   levity..lethal   Hint       6. Although there was hardly any scope to find fault with the minister's cautiously worded response, several members of the opposition took _______ it.   advice from   liberties with   liking for   exception to   pleasure in   Hint       7. The educational system had _______ over a period of time when the authorities got preoccupied with petty politics and did not bother to update the curriculum.   adulterated   burnished   relegated   ossified   underscored   Hint