1
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Among the following which is not the $$\pi $$-bonded organometallic compound?
A
K [PtCl3 ($$\eta $$2 $$-$$ C2H4)]
B
Fe ($$\eta $$5 $$-$$ C5H5)2
C
Cr ($$\eta $$6 $$-$$ C6H6)2
D
(CH3)4Sn
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
The number of unpaired electrons in the complex ion [CoF6]3$$-$$ is
(Atomic no. : Co = 27)
A
2
B
3
C
4
D
zero
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. The reason is
A
a thin layer of Ag is formed on Cu
B
more voltage is required
C
Ag+ ions are completely removed from solution
D
less availability of Ag+ ions, as Cu can not displace Ag from [Ag(CN)2]$$-$$ ion.
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
CuSO4 when reacts with KCN forms CuCN, which is insoluble in water. It is soluble in excess of KCN, due to formation of the following complex
A
K2[Cu(CN)4]
B
K3[Cu(CN)4]
C
CuCN2
D
Cu[KCu(CN)4].
NEET Subjects
EXAM MAP