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Coordination Compounds · Question 84

AIPMT 2004MCQEasy📈 Topic in 25% papers+4−1
1

Which of the following does not have a metal carbon bond?

  1. Al(OC2H5)3
  2. C2H5MgBr
  3. K[Pt(C2H4)Cl3]
  4. Ni(CO)4

Answer

(1) Al(OC2H5)3

Solution

Al(OC2H5)3 (aluminium ethoxide) has Al-O-C linkages: the ethyl groups are attached to Al through oxygen, so there is no Al-C bond.

C2H5MgBr (Grignard reagent) has a Mg-C bond.

K[Pt(C2H4)Cl3] (Zeise's salt) has ethylene bonded to Pt through its carbon atoms ( bond).

Ni(CO)4 has Ni-C bonds (CO bonds through carbon).

Answer: (1)

AIPMT 2004

Keep practising — Coordination Compounds

2

In an octahedral structure, the pair of d orbitals involved in d2sp3 hybridisation is

  1. dx2-y2, dz2
  2. dxz, dx2-y2
  3. dz2, dxz
  4. dxy, dyz
AIPMT 2004
3

Which of the following is considered to be an anticancer species?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2004
4

Vitamin B12 contains

  1. Fe(II)
  2. Co(III)
  3. Zn(II)
  4. Ca(II)
AIPMT 2003
5

The number of unpaired electrons in the complex ion [CoF6]3- is (Atomic no. : Co = 27)

  1. 2
  2. 3
  3. 4
  4. zero
AIPMT 2003
6

Among the following which is not the -bonded organometallic compound?

  1. K[PtCl3( 2-C2H4)]
  2. Fe( 5-C5H5)2
  3. Cr( 6-C6H6)2
  4. (CH3)4Sn
AIPMT 2003
7

Atomic number of Cr and Fe are respectively 24 and 26, which of the following is paramagnetic with the spin of electron?

  1. [Cr(CO)6]
  2. [Fe(CO)5]
  3. [Fe(CN)6]4-
  4. [Cr(NH3)6]3+
AIPMT 2002
8

The hypothetical complex chloro diaquatriammine cobalt(III) chloride can be represented as

  1. [CoCl(NH3)3(H2O)2]Cl2
  2. [Co(NH3)3(H2O)Cl3]
  3. [Co(NH2)3(H2O)2Cl]
  4. [Co(NH3)3(H2O)3]Cl3
AIPMT 2002
9

In the silver plating of copper, K[Ag(CN)2] is used instead of AgNO3. The reason is

  1. a thin layer of Ag is formed on Cu
  2. more voltage is required
  3. Ag+ ions are completely removed from solution
  4. less availability of Ag+ ions, as Cu cannot displace Ag from [Ag(CN)2]- ion.
AIPMT 2002
10

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

  1. K2[Cu(CN)4]
  2. K3[Cu(CN)4]
  3. CuCN2
  4. Cu[KCu(CN)4]
AIPMT 2002
11

Which of the following will give maximum number of isomers?

  1. [Co(NH3)4Cl2]
  2. [Ni(en)(NH3)4]2+
  3. [Ni(C2O4)(en)2]
  4. [Cr(SCN)2(NH3)4]+
AIPMT 2001

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