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GMAT Verbal Section : GMAT Sample Critical Reasoning Questions

Read the separate condition given below each statement and then select the correct answer from the following five options.

  1. Though the diamonds have less chances of having any impurities, certain minute defects would result in diamonds of many different colors.

    Which of the following, if true, identifies the greatest flaw in the reasoning above?

    1. There are very less chances for the diamonds to be impure
    2. Even small impurities can cause variety of color changes in the diamonds
    3. The diamonds get different colors because of slight impurities in it
    4. Since the diamonds are very prone to impurities, they cannot exist in white color in nature
    5. Pure diamonds are white in color whereas diamonds with small defects are colorful

    Correct answer: d

  2. Diamonds are provided with a unique luster because of their characteristic to cause dispersion of light on a large scale.

    Which of the following, if true, most seriously endangers the validity of the argument by the speaker above?

    1. The property of the diamond to cause dispersion of light into different colors provides it with a unique luster
    2. Diamonds cannot cause dispersion of light
    3. The diamond have a unique luster that is provided to it naturally
    4. Diamonds have the property to cause dispersion of light into different colors
    5. Optical dispersion is one of the properties of diamonds that gives it a unique lustrous look

    Correct answer: b

  3. Because of the development of so many varieties for diamonds such as the natural diamonds, synthetic diamonds and the diamond simulants, special gemological techniques have been developed in order to differentiate between them.

    The statement above logically conveys which of the following?

    1. Gemological techniques have been developed in order to differentiate the natural diamonds from the synthetic diamonds and the diamond simulants
    2. The different categories that diamonds exist in are namely the natural diamonds, synthetic diamonds and the diamond simulants
    3. Synthetic diamonds and the diamond simulants are the two types of natural diamonds
    4. You can make out the natural diamonds from the collection of synthetic and diamond stimulants with the help of gemological techniques
    5. The development of synthetic diamonds and diamond stimulants have led to the development of gemological techniques

    Correct answer: a

  4. Because of the high costs of the metal silver it has not been replaced for the use copper in the manufacturing of the electric wires.

    From which of the following can the statement above be most properly inferred?

    1. Copper wires are very cheap and economical as compared to the silver wires
    2. Since copper metal is very cheap than the metal silver, the electric wires are made using copper instead of silver
    3. Though silver is more better conductor of electricity than copper, but because it is more costly than copper, it is not used in the making of electric wires
    4. Because of the high costs of the metal silver it has not been replaced for the use copper
    5. Copper is used for making electric wires as it is not only cheap but also a very good conductor of electricity

    Correct answer: c

  5. Though silver is somewhat more hard in nature than gold, it is still very flexible and hence it can be easily casted into any shape as compared to gold.

    Which of the following, if true, identifies the greatest flaw in the reasoning above?

    1. Silver is harder than gold and hence ornaments are made of gold instead of silver
    2. It is easy to mould silver into any shape in comparison to copper because of its flexible characteristic
    3. Silver is more hard but more flexible than gold
    4. It is difficult to mould gold into different shapes as compared to silver because it is less flexible than silver
    5. Since silver is more flexible than the element gold, it is easy to caste it into any desired shape

    Correct answer: a

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GMAT Sample Critical Reasoning Question Number : 1-5 | 6-10 | 11-15 | 16-20 | 21-25 | 26-30 | 31-35 | 36-40 | 41-45 | 46-50 | 51-55 | 56-60 | 61-65 | 66-70 | 71-75 | 76-80 | 81-85 | 86-90 | 91-95 | 96-100
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