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AIPMT 2010 Biology

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Q. 1.    Which one of the following species does not exist under normal conditions?

  1. &;

Sol:

Bond order of  = 0, cannot exit

Answer : (2)

Q. 2. Which of the following complex ion is not expected to absorb visible light?

  1.       
  2.   
  3.   

sol.

  1.   : Number of unpaired electrons − 0
  2.  : Number of unpaired electrons − 3
  3.  : Number of unpaired electrons − 4
  4.  : Number of unpaired electrons − 2

Answer : (1)

Q. 3. If pH of a saturated solution of  is 12, the value of its  is:

  1.   

Sol.  

 

Answer : (4)

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