Mg is an important component of which biomolecule occurring extensively in living world? [ CBSE PMT 2000]
8%
a) Haemoglobin
67%
b) Chlorophyll
8%
c) Florigen
17%
d) ATP
Q.2.
The total number of possible isomers of the complex compound [CuII(NH3)4][PtIICl4] is ..[ CBSE PMT 1998]
29%
a) 3
14%
b) 6
29%
c) 5
29%
d) 4
Q.3.
Which of the following is paramagnetic? [ AFMC 1997]
33%
a) [Ni(CO)4]
22%
b) [Co(NH3)6]2+
11%
c) [Ni(CN)4]2-
33%
d) [NiCl4]2-
Q.4.
Which of the following species represent the example of dsp2 hybridization? [ MP CEE 1999]
22%
a) [Fe(CN)6]3-
44%
b) [Ni(CN)4]2-
22%
c) [Zn(NH3)4]2+
11%
d) [FeF6]3-
Q.5.
According to the postulate of Werner for coordination compounds ..[ MP PMT 2002]
50%
a) Primary valency is ionizable
25%
b) Secondary valency is ionizable
25%
c) Primary and Secondary valencies are non-ionizable
0%
d) Only primary valency is non-ionizable
Q.6.
Which statement is incorrect? [ CBSE PMT 2001]
62%
a) Ni(CO4) - Tetrahedral, paramagnetic
25%
b) [Ni(CN)4]2- - Square planar, diamagnetic
12%
c) Ni(CO)4 - tetrahedral, diamagnetic
0%
d)[NiCl4]2- - tetrahedral, paramagnetic
Q.7.
The formula, dichlorobis (urea) copper (II) is [ CBSE PMT 1997]
25%
a) [Cu{O=C(NH2}]Cl2
25%
b) [CuCl2{O=C(NH2)2}2]
12%
c) [Cu{O=C(NH2)2]Cl]Cl
38%
d) [CuCl2{O=C(NH2)2}2]
Q.8.
Oxidation state of the metal ion in the complex [fe(CN)6]3- is [ AMU 1997]
86%
a) +3
0%
b) -3
14%
c) +6
0%
d) -6
Q.9.
Which one of the following shows maximum paramagnetic character?
38%
a) [Cr(H2O)6]3+
38%
b) [Fe(CN)6]4-
25%
c) [Fe(CN)6]3-
0%
d) [Cu(H2O)6]2+
Q.10.
in which of the following compound transition metal has zero oxidation state? [ CBSE PMT 1999]
25%
a) CrO5
12%
b) [Ni(NH2 . NH2)2]2+
12%
c) Co(ClO4)2
50%
d) [Fe(CO)5]
Q.11.
Which of the following will exhibit maximum ionic conductivity? [ CBSE PMT 2001]
50%
a) K4[Fe(CN)6]
25%
b) [Co(NH3)6]Cl3
0%
c) [Cu(NH3)4]Cl2
25%
d) [Ni(CO)4]
Q.12.
Which of the following is paramagnetic? [ BHU 1997]
25%
a) [Co(NH3)6]3+
25%
b) [Ni(CO)4]
12%
c) [Ni(NH3)4]2+
38%
d) [Ni(CN)4]2-
Q.13.
Cobalt is present in ..[CPMT 2003]
12%
a) Vitamin B1
0%
b) Vitamin B2
12%
c) Vitamin B6
75%
d) Vitamin B12
Q.14.
Which of the following will give four isomers? [ CBSE PMT 2000]
25%
a) [Co(en)(NH3)2Cl2]Cl
12%
b) [Co(PPh3)2(NH3)2Cl2]Cl
0%
c) [Co(en)3]Cl3
62%
d) [Co(en)2Cl2]Br
Q.15.
A complex compound of cobalt has molecular formula containing five NH3 molecules, one nitro group and two chlorine atoms for one Co atom. one mole of this compound produces three mole ions in aqueous solution, two moles of AgCl get precipitate. the ionic formula of the compound is ..[ CBSE PMT 1998]
33%
a) [Co(NH3)4 NO2Cl] [(NH3)Cl]
22%
b) [Co(NH3)5Cl] [Cl(NO)2]
33%
c) [Co(NH3)5 (NO2)]Cl2
11%
d)[Co(NH3)5] [(NO2)Cl2 ]
Q.16.
The coordination and oxidation number of X in the compound respectively are [ X(SO4)(NH3)5]Cl will be [JIPMER 1997]
12%
a) 10 and 3
0%
b) 6 and 4
0%
c) 2 and 6
88%
d) 6 and 3
Q.17.
The geometry of Ni(CO)4 and Ni(PPh3)2Cl2 are [IIT 1999]
11%
a) Both square planar
33%
b) tetrahedral and square planar
33%
c) Both tetrahedral
22%
d) Square planar and tetrahedral
Q.18.
The number of isomers exhibited by [Cr(NH3)3Cl3Cl3] is ..[ Kerala MEE 2000]
57%
a) 2
29%
b) 4
0%
c) 3
14%
d) 6
Q.19.
the priomary valency of iron in K4[Fe(CN)6] is ..[ kerala MEE 2001]
0%
a) 1
86%
b) 2
0%
c) 3
14%
d) 6
Q.20.
Which of the following has square planar structure? [ BHU 1997]
25%
a) [NiCl4]2-
0%
b) [Ni(CO)4]0
50%
c) [Ni(CN)4]2-
25%
d) None of these
Q.21.
In [Cr(C2O4)3]3-, isomerism shown is [ AIEEE 2001]
14%
a) Ligand
57%
b) Optical
0%
c) geometrical
29%
d) Ionization
Q.22.
An example for double salt is [KCET 2002]
0%
a) Curammonium sulphate
75%
b) Mohr's salt
0%
c) Potassium ferricyanide
25%
d) Cobalthexammine chloride
Q.23.
Ammonia forms the complex ion [Cu(NH3)4]2+ with copper ions in alkaline solution but not in acidic solutions. What is the reason for it? [AIEEE2003]
50%
a) In acidic solutions, protons coordinate with ammonia molecules forming NH4+ ions and NH3 molecules are not available
25%
b) In alkaline solutions insoluble Cu(OH)2 is precipitated which is soluble in excess of any alkali
0%
c) Copper hydroxide is an amphoteric substance
25%
d) In acidic solutions hydration protects copper ions
Q.24.
The complex used as an anticancer agent is [ AIIMS 2003]
11%
a) mer-[Co(NH3)3Cl3]
67%
b) cis-[PtCl2(NH3)2]
11%
c) cis-K2[PtCl2Br2]
11%
d) Na2CoCl4
Q.25.
Consider the following complex [Co(NH3)5CO3]ClO4 The coordination number, oxidation number, number of d-electrons and number of unpaired d-electrons on the metal are, respectively...[SCRA 2001]
56%
a) 6, 3, 6, 0
11%
b) 7, 2, 7, 1
22%
c) 7, 1, 6, 4
11%
d) 6, 2, 7, 3
Q.26.
The most stable complex among the following is [ MPPMT 2002]
0%
a) K3[Al;(C2O4)3]
12%
b) [Pt(en)2]Cl2
25%
c) [Ag(NH3)2]Cl
62%
d) K2[Ni(EDTA)]
Q.27.
The formula of ferrocene is ..[Haryana CEET 2003]
25%
a) [Fe(CN)6]3-
0%
b) [Fe(CN)6]4-
12%
c) [Fe(CO)5]
62%
d) [(C5H5)2Fe]
Q.28.
Potassium ferricyanide produces on ionization ..[CPMT 2003]
29%
a) 2 ions
0%
b) 1 ion
43%
c) 3 ions
29%
d) 4 ions
Q.29.
The geometry of the compound [Pt(NH3)2Cl2] is [ DEC 2001]
43%
a) Square planar
0%
b) Pyramidal
43%
c) tetrahedral
14%
d) Octahedral
Q.30.
The hypothetical complex chlorodiaquatriamminecobalt(III) chloride can be represented as [ CBSE PMT 2002]
22%
a) [CoCl(NH3)3(H2O)2]Cl2
11%
b) [Co(NH3)3(H2O)Cl3]
44%
c) [Co(NH3)3(H2O)2Cl]
22%
d) [Co(NH3)3(H2O)3]Cl3
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