1
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Of the following complex ions, which is diamagnetic in nature?
A
[NiCl4]2$$-$$
B
[Ni(CN)4]2$$-$$
C
[CuCl4]2$$-$$
D
[CoF6]3$$-$$
2
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Which of the following carbonyls will have the strongest C $$-$$ O bond?
A
Mn(CO)6+
B
Cr(CO)6
C
V(CO)6$$-$$
D
Fe(CO)5
3
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
Which of the following complex compounds will exhibit highest paramagnetic behaviour?
A
[Ti(NH3)6]3+
B
[Cr(NH3)6]3+
C
[Co(NH3)6]3+
D
[Zn(NH3)6]2+
4
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of NH+4 is 0.20 M. If the equilibrium constant, Kb for NH3 equals 1.8 $$ \times $$ 10$$-$$5, what is the pH of this solution? (log 2.7 = 0.43)
A
9.08
B
9.43
C
11.72
D
8.73
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