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# Rare Earth Elements

Author Message
Manager
Joined: 22 Aug 2016
Posts: 81
Location: India
Concentration: Operations, Finance
GMAT 1: 650 Q49 V29
GMAT 2: 710 Q49 V37
GPA: 3.5
WE: Other (Education)

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20 Jul 2017, 22:44
2
00:00

Difficulty:

55% (hard)

Question Stats:

61% (01:38) correct 39% (01:02) wrong based on 71 sessions

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China, the primary supplier of Rare Earth Elements, a key component of military hardware and electric cars, has gradually reduced its export quotas as part of an effort to retain more of these minerals for domestic manufacturers. To ease reliance on China for REE, Toyota, Renault, Nissan and other world leaders on electric vehicles have now switched to a new technology called 'permanent magnets' which consumes a much less REE per unit of production. In addition, most countries have now re-started the key mines. These measures will thus help the world to reduce its dependence on China for REE
Which of the following would it be most useful to establish in evaluating the argument?

A)When, if ever, will production of electric cars outstrip production of military hardware?
B)Has any electric car model such as Toyota Prius been converted using 'permanent magnets' ?
C)Are Toyota, Renault and Nissan among the electric car manufacturers that rely mostly on Chinese REE?
D)What proportion of world's total REE needs is met by rare earth minerals such as neodymium and lithium?
E)Is the amount of REE used each year around the world for military hardware and electric vehicles increasing?

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Manager
Joined: 20 Jan 2016
Posts: 181

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23 Jul 2017, 06:26
Can someone provide explanation for this please?

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Re: Rare Earth Elements   [#permalink] 23 Jul 2017, 06:26
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# Rare Earth Elements

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