Match List – I with List – II :         List – I                  List – II         a) Be                     i) treatment of cancer         b) Mg                    ii) extraction of metals         c) Ca                     iii) incendiary bombs and signals         d) Ra                     iv) windows of X-ray tubes                                      v) bearings for motor engines         Choose the most appropriate answer from the option given below:

Match List – I with List – II :

         List – I                  List – II

         a) Be                     i) treatment of cancer

         b) Mg                    ii) extraction of metals

         c) Ca                     iii) incendiary bombs and signals

         d) Ra                     iv) windows of X-ray tubes

                                      v) bearings for motor engines

         Choose the most appropriate answer from the option given below:

  1. A

    a – iii, b – iv, c – v, d – ii

  2. B

    a – iv, b – iii, c – ii, d – i

  3. C

    a – iv, b – iii, c – ii, d – i

  4. D

    a – iii, b – iv, c – ii, d – v

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    Solution:

    Be Þ  used for making window x-ray tube 

    Mg Þ used in signals and incendiary bombs

    Ca Þ used for the extraction of metals 

    Ra Þ for the treatment of cancer  

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