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Haryana PMT Haryana PMT Solved Paper-2003

  • question_answer
    Brown glass and cement have, which element common in them?

    A)  \[Fe\]                                  

    B)  \[Al\]

    C)  \[Na\]                                 

    D)  All of these

    Correct Answer: A

    Solution :

                    Brown glass contains \[F{{e}_{2}}{{O}_{3}}\] with sodium and calcium silicates. Cement also contain little \[F{{e}_{2}}{{O}_{3}}\](about 1%).                  


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