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• AIPMT 2010 Chemistry

AIPMT 2010 Chemistry

 

Q. 47. In a buffer solution containing equal concentration of  and HB, the  . The pH of buffer solution is:

1. 10
2. 7
3. 6
4. 4

Sol.

For the buffer solution containing equal concentration of  and HB

Answer: (4)

Q. 48. AB crystallizes in a body centred cubic lattice with edge length 'a' equal to 387 pm. The distance between two oppositively charged ions in the lattice is:

1. 335 pm
2. 250 pm
3. 200 pm
4. 300 pm

Sol:   

For BCC lattice body diagonal is equal to a  
The distance between the two oppositely charged ions =

                                                                                    =       
Answer : (1)

Q. 49. The existence of two different coloured complexes with the composition of

1. linkage isomerism
2. geometrical isomerism
3. coordination isomerism
4. ionization isomerism

Sol.

Answer : (2)

Q. 50.  Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is:

1. 
   
2. 
    
3. 
   
4. 
   

Sol:

 is the weakest base and hence better leaving group

Answer : (4)