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GMAT Practice Exam Questions with answers
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GMAT Practice Exam Questions withanswers
Leaching, the recovery of copper from the drainage water of mines, **as a method of the extraction
of minerals, it was well established** as early as the eighteenth century, but until about 25 years ago
miners did not realize that bacteria take an active part in the process. - ✔✔was a well-established
method of mineral extraction
Even more than mountainside slides of mud or snow, naturally occurring forest fires promote the
survival of aspen trees. Aspens' need for fire may seem illogical since aspens are particularly vulnerable
to fires; whereas the bark of most trees consists of dead cells, the aspen's bark is a living, functioning
tissue that—along with the rest of the tree—succumbs quickly to fire.
The explanation is that each aspen, while appearing to exist separately as a single tree, is in fact only
the stem or shoot of a far larger organism. A group of thousands of aspens can actually constitute a
single organism, called a clone, that shares an interconnected root system and a unique set of genes.
Thus, when one aspen—a single stem—dies, the entire clone is affected. While alive, a stem sends
hormones into the root system to suppress formation of further stems. But when the stem dies, its
hormone signal also ceases. If a clone - ✔✔reasons that a phenomenon benefits a particular
organism
Previous Passage:
It can be inferred from the passage that when aspen groves experience a "disturbance" (see
highlighted text), such a disturbance - ✔✔leads to a hormonal imbalance within an aspen clone
Previous Passage:
According to the passage, which of the following would occur if an aspen grove failed to
regenerate periodically? - ✔✔The grove would lose its access to sunlight.
, In the nation of Partoria, large trucks currently account for 6 percent of miles driven on Partoria's roads
but are involved in 12 percent of all highway fatalities. The very largest trucks—those with three
trailers—had less than a third of the accident rate of single-and double-trailer trucks. Clearly, therefore,
one way for Partoria to reduce highway deaths would be to require shippers to increase their use of
triple-trailer trucks.
Which of the following, if true, most seriously weakens the argument? - ✔✔Partorian trucking
companies have so far used triple-trailer trucks on lightly traveled sections of major highways only.
Because of steep increases in the average price per box of cereal over the last 10 years, overall sales of
cereal have recently begun to drop. In an attempt to improve sales, one major cereal manufacturer
reduced the wholesale prices of its cereals by 20 percent. Since most other cereal manufacturers have
announced that they will follow suit, it is likely that the level of overall sales of cereal will rise
significantly.
Which of the following would it be most useful to establish in evaluating the argument? -
✔✔Whether the prices that supermarkets charge for these cereals will reflect the lower prices
the supermarkets will be paying the manufacturers
Trans World Entertainment Corporation, which owns the Record Town and Saturday Matinee retail
chains, announced **that since sales of up to one-fourth of its stores are poor, they will be closed.** -
✔✔it was closing up to one fourth of its stores because of poor sales
The economy around Lake Paqua depends on fishing of the lake's landlocked salmon population. In
recent years, scarcity of food for salmon there has caused a decline in both the number and the size of
the adult salmon in the lake. As a result, the region's revenues from salmon fishing have declined
significantly. To remedy this situation, officials plan to introduce shrimp, which can serve as a food
source for adult salmon, into Lake Paqua.
Which of the following, if true, most seriously calls into question the plan's chances for success? -
✔✔The primary food for both shrimp and juvenile salmon is plankton, which is not abundant in Lake
Paqua
George Washington Carver dedicated his life to **the economic strengthening of the South with
improvement of soil and diversification of crops.** - ✔✔strengthening the economy of the
South through soil improvement and crop diversification
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