9. CO-ORDINATION COMPOUNDS Objective

9. CO-ORDINATION COMPOUNDS


1. K2[Fe(CN)6] is a/an

(A) double salt
(B) complex salt
(C) acid
(D) base

Answer тЗТ (B)


2. Which of the following compounds has tetrahedral geometry ?

(A) [Ni(CN)4]2-
(B) [Pd(CN)4]2-
(C) [PdCl4]2-
(D) (NiCl4]2-

Answer тЗТ (D)


3. The number of possible isomers for the complex

[Co(C2O4)(NH3)2]

(A) 1
(B) 2
(C) 3
(D) 4

Answer тЗТ (B)


4. The oxidation state of nickel in [Ni(CO4)] is

(A) 1
(B) 4
(C) 2
(D) 3

Answer тЗТ (B)


5. According to Werner’s theory of coordination compounds

(A) Primary valency is ionisable
(B) Secondary valency is ionisable
(C) Primary and secondary valencies are ionisable
(D) Neither primary nor secondary valency is ionisable

Answer тЗТ (A)


6. The 1igand N (CH2CH2NH2) is

(A) bidentate
(B) tridentate
(C) tetradentate
(D) pentadentate

Answer тЗТ (C)


7. Which of the following is a tridentate ligand ?

(A) EDTA4-
(B) (COO)Which of the following is a
(C) dien
(D) NOWhich of the following is a

Answer тЗТ (C)


8. Among the following which are ambidentate ligands ?

(i) SCN-
(ii) NOAmong the following which are
(iii) NOWhich of the following is a
(iv) C2OWhich of the following is not

(A) (i) and (iii)
(B) (i) and (iv)
(C) (ii) and (iii)
(D) (ii) and (iv)

Answer тЗТ (A)


9. Which of the following ligands form a chelate ?

(A) Acetate
(B) Oxalate
(C) Cyanide
(D) Ammonia

Answer тЗТ (B)


10. The correct IUPAC name of the following compound is

[Cr(NH3)5(NCS)] [ZnCl4]

(A) Penta amine isothiocyanato chromium (III) tetrachlorozincate (II)
(B) Penta amine isothicocyanatezinc chloride- chromate (III)
(C) Penta amine isothicoyanato chromate (II)
(D) isothiocyanatopenta amine chromium (II) zinc chloride (IV)

Answer тЗТ (A)


11. Correct formulae of tetraamine chloronitro- platinum (IV) sulphate can be written as

(A) (Pt(NH3)4 (ONO) Cl]SO4
(B) [Pt (NH3)4Cl2NO2]2
(C) (Pt(NH3)4 (NO2) Cl]SO4
(D) (PtCl (ONO)NH3(SO4)]

Answer тЗТ (C)


12. Which of the following isomers will give white precipitate with BaCl2 solution ?

(A) (Co(NH3)5SO4]Br
(B) (Co(NH3)5Br]SO4
(C) (Co(NH3)4(SO4)2]Br
(D) (CO(NH3)4(SO4)]

Answer тЗТ (C)


13. Which of the following compounds exhibits linkage isomerism ?

(A) [Co(en)3]Cl3
(B) [Co(NH3)6] [Cr(en)3]
(C) [Co(en)2(NO2)Cl]Br
(D) [Co(NH3)5Cl] Br2

Answer тЗТ (C)


14. Which of the following will not show geometrical isomerism ?

(A) [Cr(NH3)4Cl2]Cl
(B) (Co(en)2Cl2]Cl
(C) (Co(NH3)5NO2]Cl2
(D) [Pt(NH3)2Cl2]

Answer тЗТ (C)


15. The hybridisation involved in [Co(C2O4)3]3- is

(A) sp3 d2
(B) sp3 d3
(C) dsp3
(D) d2 sp3

Answer тЗТ (D)


16. The lowest value of paramagnetism is shown by

(A) [Co(CN)6]3-
(B) [Fe(CN)6]3-
(C) [Cr(CN)6]3-
(D) [Mn(CN)6]3-

Answer тЗТ (A)


17. The magnitude of magnetic moment (spin only) of [NiCl4]2- will be

(A) 2.82 BM
(B) 3.25 BM
(C) 1.23 BM
(D) 5.64 BM

Answer тЗТ (A)


18. Which of the following has largest paramag- netism ?

(A) [Cr(H2O)6]3+
(B) [Fe(H2O)6]2+
(C) Cu(H2O)6]2+
(D) Zn(H2O)2]2+

Answer тЗТ (B)


19. Indicate the complex ion which shows geometrical isomerism

(A) [Cr(H2O)4Cl2]+
(B) (Pt(NH3)3Cl]
(C) (Co(NH3)]6]3+
(D) [Co(CN)5 (NC)]3-

Answer тЗТ (A)


20. A chelating agent has two or more than two donor atoms to bind to a single metal ion. Which of the following is not a chelating agent ?

(A) Thiosulphato
(B) Oxalato
(C) Glycinato
(D) Ethane-1, 2-diamine

Answer тЗТ (A)


21. What kind of isomerism exists between [Cr(H2O)6]C13 (violet) and [Cr(H2O)5C1]Cl2H2O (greyish-green) ?

(A) Linkage isomerism
(B) Solvate isomerism
(C) Ionisation isomerism
(D) Coordination isomerism

Answer тЗТ (B)


22. What is the coordination number of Cr in K3 [Cr(ox)3]

(A) – 6
(B) 5
(C) 4
(D) 3

Answer тЗТ (A)


23. The EAN of cobalt in the complex ion [Co(en)2Cl2] is

(A) тАУ 72
(B) 36
(C) 33
(D) 35

Answer тЗТ (B)


24. Spleter is

(A) Pure zinc
(B) Impure zinc
(C) Impure aluminium
(D) Impure mercury

Answer тЗТ (B)


Class 12th Chemistry Objective Question English

S.N CHEMISTRY OBJECTIVE English Medium
1 SOLID STATE┬а
2 SOLUTION
3 ELECTROCHEMISTRY
4 CHEMICAL KINETICS
5 SURFACE CHEMISTRY
6 GENERAL PRINCIPLES & PROCESSES OF ISOLATION OF ELEMENTS
7 THE P-BLOCK ELEMENTS
8 THE D- AND f-BLOCK ELEMENTS
9 CO-ORDINATION COMPOUNDS
10 HALOALKANES AND HALOARENES
11 ALCOHOLS, PHENOLS AND ETHERS
12 ALDEHYDES, KETONES AND CARBOXYLIC ACIDS
13 AMINES
14 BIOMOLECULES
15 POLYMERS
16 CHEMISTRY IN EVERYDAY LIFE
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