You are currently viewing NEET Previous Year Chemistry Questions Coordination Compounds

NEET Previous Year Chemistry Questions Coordination Compounds

1. The correct order of the stoichiometries of AgCl formed when AgNO3 in excess is treated with the complexes : CoCl3.6NH3, CoCl3.5NH3, CoCl3.4NH3 respectively is              (NEET 2017)

(a) 3AgCl, 1AgCl, 2AgCl

(b) 3AgCl, 2AgCl, 1AgCl

(c) 2AgCl, 3AgCl, 2AgCl

(d) 1AgCl, 3AgCl, 2AgCl

2. Cobalt(III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at 25°C?                      (2015)

(a) CoCl3 · 5NH3                       (b) CoCl3 · 6NH3

(c) CoCl3 . 3NH3                       (d) CoCl3 · 4NH3

Chemistry Notes

Physics Notes

Biology Notes

3. An excess of AgNO3 is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium(III) chloride. The number of moles of AgCl precipitated would be                                               (NEET 2013)

(a) 0.003         (b) 0.01

(c) 0.001        (d) 0.002

4. Which of the following will exhibit maximum ionic conductivity?                           (2001)

(a) K4[Fe(CN)6]         (b) [Co(NH3)6]Cl3

(c) [Cu(NH3)4]Cl2        (d) [Ni(CO)4]

6. The correct increasing order of trans-effect of the following species is (2016)

(a) NH3 > CN > Br > C6H5

(b) CN > C6H5 > Br > NH3

(c) Br > CN > NH3 > C6H5

(d) CN > Br > C6H5 > NH3

7. The sum of coordination number and oxidation number of the metal M in the complex [M(en)2(C2O4)]Cl (where en is ethylene diamine) is           (2015)        

(a) 6                            (b) 7

(c) 8                            (d) 9

8. The anion of acetyl acetone (acacia) forms Co(acacia)3 Chelate with Co3+. The rings of the chelate are                                                                    (2013)

(a) Five membered     (b) four membered

(c) Six membered       (d) three membered

13. The name of complex ion, [Fe(CN)6]3– is                              (2015)

(a) Hexacyanitoferrate(III) ion

(b) Tricyanoferrate (III) ion

(c) Hexacyanidoferrate (III) ion

(d) Hexacyanoiron (III) ion.

14. The correct IUPAC name for [CrF2(en)2]Cl is                                 (2013)

(a) Chlorodifluoridoethylenediaminechromium (III) chloride

(b) Difluoridobis (ethylene diamine) chromium (III) Chloride

(c) difluorobis-(ethylene diamine) chromium (III) Chloride

(d) Chlorodifluoridobis (ethylene diamine) Chromium (III).

18. The type of isomerism shown by the complex [CoCl2(en)2] is   (NEET2018)

(a) Geometrical isomerism

(b) Coordination isomerism

(c) Ionization isomerism

(d) Linkage isomerism

19. Number of possible isomers for the complex [Co(en)2Cl2]Cl will be (en = ethylene diamine)                                                                               (2015)

(a) 1                                           (b) 3

(c) 4                                           (d) 2

20. The complexes [Co(NH3)6][Cr(CN)6] and [Cr(NH3)6][Co(CN)6] are the examples of which type of isomerism?                                        (2011)

(a) Linkage isomerism

(b) Ionization isomerism

(c) Coordination isomerism

(d) Geometrical isomerism

21. The complex, [Pt(py)(NH3)BrCl] will have how many geometrical isomers? (2011)

(a) 3                (b) 4

(c) 0                (d) 2

22. The existence of two different colored complexes with the composition of [Co(NH3)4Cl2]+ is due to                                                         (2010)

(a) Linkage isomerism

(b) Geometrical isomerism

(c) Coordination isomerism

(d) Ionization isomerism.

23. Which one of the following complexes is not? Expected to exhibit isomerism? (2010)

(a) [Ni(NH3)4(H2O)2]2+                (b) [Pt(NH3)2Cl2]

(c) [Ni(NH3)2Cl2]                       (d) [Ni(en)3]2+

24. Which of the following does not show optical isomerism?    (2009)

(a) [Co (NH3)3Cl3]0

(b) [Co (en)Cl2(NH3)2]+

(c) [Co (en)3]3+

(d) [Co (en)2Cl2]+(en = ethylenediamine)

25. Which of the following will give a pair of enantiomorphism?           (2007)

(a) [Cr(NH3)6][Co(CN)6]

(b) [Co(en)2Cl2]Cl

(c) [Pt(NH3)4 ][PtCl6]

(d) [Co(NH3)4Cl2]NO2

(en = NH2CH2CH2NH2)