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1
AIEEE 2010
MCQ (Single Correct Answer)
+4
-1
A solution containing 2.675g of CoCl3. 6NH3 (molar mass = 267.5 g mol–1) is passed through a cation exchanger. The chloride ions obtained in solution were treated with excess of AgNO3 to give 4.78 g of AgCl (molar mass = 143.5 g mol–1). The formula of the complex is : (At. Mass of Ag = 108 u)
A
[Co(NH3)6]Cl3
B
[CoCl2(NH3)4]Cl
C
[CoCl3(NH3)3]
D
[CoCl(NH3)5]Cl2
2
AIEEE 2009
MCQ (Single Correct Answer)
+4
-1
Which of the following pairs represents linkage isomers ?
A
[Pd (P Ph3)2 (NCS)2] and [Pd (P Ph3)2 (SCN)2]
B
[Co(NH3)5 NO3]SO4 and [Co(NH3)5 SO4]NO3
C
[Pt Cl2(NH3)4] Br2 and [Pt Br2(NH3)4] Cl2
D
[Cu (NH3)4] [Pt Cl4] and [Pt (NH3)4] [CuCl4]
3
AIEEE 2009
MCQ (Single Correct Answer)
+4
-1
Which of the following has an optical isomer ?
A
[Co(en)(NH3)2]2+
B
[Co(H2O)4(en)]3+
C
[Co(en)2(NH3)2]3+
D
[Co(NH3)3Cl]+
4
AIEEE 2008
MCQ (Single Correct Answer)
+4
-1
In which of the following octahedral complexes of Co (at. no. 27), will the magnitude of $$\Delta _o$$ be the highest?
A
[Co(CN)6]3−
B
[Co(C2O4)3]3−
C
[Co(H2O)6]3+
D
[Co(NH3)6]3+
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