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Essential Part - Aptitude Questions and Answers - RejinpaulPlacement

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A good way to approach this type of question is to use the following sentence: "A ______ could not exist without ______.". Find the word that names a necessary part of the underlined word.

1.
vibration
Answer & Solution
Answer: (A) motion

Solution: Something cannot vibrate without creating motion, so motion is essential to vibration.
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2.
town
Answer & Solution
Answer: (A) residents

Solution: Residents must be present in order to have a town. A town may be too small to have skyscrapers (choice b). A town may or may not have parks (choice c) and libraries (choice d), so they are not the essential elements.
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3.
hurricane
Answer & Solution
Answer: (D) wind

Solution: A hurricane cannot exist without wind. A beach is not essential to a hurricane (choice a). A hurricane is a type of cyclone, which rules out (choice b). Not all hurricanes cause damage (choice c).
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4.
contract
Answer & Solution
Answer: (A) agreement

Solution: An agreement is necessary to have a contract. A contract may appear on a document (choice b), but it is not required. A contract may be oral as well as written, so choice c is not essential. A contract can be made without an attorney (choice d).
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5.
directory
Answer & Solution
Answer: (B) listing

Solution: A directory is a listing of names or things, so (choice b) is the essential element. A telephone (choice a) often has a directory associated with it, but it is not essential. A computer (choice c) uses a directory format to list files, but it is not required.Names (choice d) are often listed in a directory, but many other things are listed in directories, so this is not the essential element.
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