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IIT-JEE-Chemistry-Mains-2004


  
1.        For the given reaction 
                                                A + B --> Products 
  
          Following data were given 
  
            Initial conc. (m/L)             Initial conc. (m/L)           Initial rate (mL-1s-1)


                        [A]0                                         [B]0 

                   0.1                                  0.1                            0.05
                   0.2                                  0.1                            0.1
                   0.1                                  0.2                            0.05


               (a)       Write the rate equation. 
               (b)       Calculate the rate constant. 
  
2.       100 mL of a liquid contained in an insulated container at a pressure of 1 bar.
         The pressure is steeply increased to 100 bar. The volume of the liquid is       
         decreased by 1 mL at this constant pressure. Find the DH and DU. 
  
3.      Draw the shape of XeF4 and OSF4 according to VSEPR theory. Show the lone 
         pair of electrons on the central atom. 
  
4.      The structure of D-Glucose is as follows : 

                                               
                                    structure-of-d-glucose

  
            (a)       Draw the structures of L-Glucose. 
            (b)       Give the reaction of L-Glucose with Tollen's reagent. 
  
5.         (a)       Draw Newmann's projection the less stable staggered form of 
                       butane.
            (b)       Relatively less stability of the staggered form is due to :

                        (i)         Torsional strain 
                        (ii)        Van der Waal's strain 
                        (iii)       Combination of the above two 
  
6.         Arrange the following oxides in the increasing order of Bronsted basicity.

                              CI2O7, BaO, SO3, CO2, B2O3 
  
7.        AIF3 is insoluble in anhydrous HF but when little KF is added to the
           compound it becomes soluble. On addition of BF3, AIF3 is precipitated.
           Write the balanced chemical equations. 
  
8.        The crystal AB (rock salt structure) has molecular weight 6.023 y amu. 
           Where y is an arbitrary number in amu. If the minimum distance between    
           cation and anion is y1/3 nm and the observed density is 20 kg/m3. Find the:
 
            (a)       density in kg/m3 and 
            (b)       type of defect 
 

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