1
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
Which of the following will give a pair of enantiomorphs?
(en = NH2CH2CH2NH2)
A
[Cr(NH3)6][Co(CN)6]
B
[Co(en)2Cl2]Cl
C
[Pt(NH3)4][PtCl6]
D
[Co(NH3)4Cl2]NO2
2
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
The d electron configurations of Cr2+, Mn2+, Fe2+ and Ni2+ are 3d4, 3d5, 3d6 and 3d8 respectively. Which one of the following aqua complexes will exhibit the minimum paramagnetic behaviour?

(At. No. Cr = 24, Mn = 25, Fe = 26, Ni = 28)
A
[Fe(H2O)6]2+
B
[Ni(H2O)6]2+
C
[Cr(H2O)6]2+
D
[Mn(H2O)6]2+
3
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
[Cr(H2O)6]Cl3 (At. no. of Cr = 24) has a magnetic momen of 3.83 B.M. The correct distribution of 3d electrons in the chromium of the complex is
A
$$3d_{x\,y}^1,\,3d_{y\,z}^1,\,3d_{z^2}^{1}$$
B
$$3d_{\left( {x^2 - y^2} \right)}^1,\,3d_{z^2}^1,\,3d_{xz}^1$$
C
$$3d_{x\,y}^1,\,\,3d_{\left( {x^2 - y^2} \right)}^1,\,3d_{y\,z}^1$$
D
$$3d_{x\,y}^1,\,3d_{y\,z}^1,\,3d_{x\,z}^1$$
4
AIPMT 2006
MCQ (Single Correct Answer)
+4
-1
[Co(NH3)4(NO2)2]Cl exhibits
A
linkage isomerism, geometrical isomerism and optical isomerism
B
linkage isomerism, ionization isomerism and optical isomerism
C
linkage isomerism, ionization isomerism and geometrical isomerism
D
ionization isomerism, geometrical isomerism and oprical isomerism.
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