Railways Sample Paper RRB (Group D) Sample Test Paper-11

  • question_answer
    X-rays can be used

    A)  To detect heart diseases.

    B)  To detect defects in precious stones and diamonds.

    C)  To detect gold under the earth.

    D)  For cutting and welding of metals.

    Correct Answer: B

    Solution :

    [b] X rays are frequently used to check the defects in Diamonds and other precious stones.


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