New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    Brass gets discoloured in air due to the presence of

    which of the following gases in air?
    A Oxygen Correct Answer Incorrect Answer
    B Nitrogen Correct Answer Incorrect Answer
    C Carbon dioxide Correct Answer Incorrect Answer
    D Hydrogen sulphide Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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