CBSE Sample Papers Chemistry Class XI [Set-2]

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CBSE Sample Paper 2009

Chemistry

Class XI

 

  1. What is the lowest value of n that allows g-orbital to exist?                1

 

    2. Calculate the mass of iron which will be converted into its oxide (Fe3O4 ) by the action of 18g of steam on it?(Atomic mass of Fe=56,O=16).                  1

 

    3. Explain why alkyl groups act as electron donating group attached to a p system.        1

 

    4.What are reactive intermediates? How are they generated by bond fission?           1

 

   5. Write all the quantum number values for the electron present in 3f orbital.                 1

 

    6.Define bond order.                                                              1

 

       7. What are representative elements?                                          1                 

 

    8. CCl4 does not act as a Lewis acid while SiCl4 and SnCl4 act as Lewis acids. Why? 1

 

   9. Amongst isopentane and neopentane which has higher boiling point and why?                1

 

   10. Methane does not react with chlorine in dark. Why?           1

 

   11. Balance following equation in basic medium by using oxidation number method or ion-electron method.

 

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