Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

51.

What is the coordination number in [Ni (en)3]Cl2 ? Explain it.

Answer»

In [Ni (en)3]Cl2 , the coordination number of Ni2+ is also 6. The ligand “en” represents ethane -1, 2- diamine (H2N – CH2 – CH2 – NH2) and it contains two donor atoms (Nitrogen). Each ligand forms two coordination bonds with nickel. So, totally there are six coordination bonds between them.

52.

Among the following complexes which one shows zero CFSE? (a) [Mn (H2O)6 ]3+ (b) [Fe (H2O)6 ]3+(c) [CO (H2O)6 ]2+ (d) [CO (H2O)6 ]3+

Answer»

(b) [Fe (H2O)6 ]3+

53.

The hybridization involved in the complex [Ni (CN)4 ]2- is …………….. (a) sp3 (b) d2 sp3+ (c) dsp2 (d) sp3d2

Answer»

The hybridization involved in the complex [Ni (CN)4]2- is dsp2.

54.

Find out the incorrect pair (a) CN- and NO2- (b) CO and NO (c) F- and Br (d) en and (COO-)2

Answer»

(a) CN and NO2 . Others are weak ligands

55.

Number of possible isomers for the complex [CO (en)2 Cl2 ]Cl will be …………….. (a) 1 (b) 4 (c) 3(d) 2

Answer»

Number of possible isomers for the complex [CO (en)Cl2 ]Cl will be 2.

56.

Assertion (A) – [CO (NH3)6 ] [Cr(CN)6 ] can exist in coordination isomerism. Reason (R) – In a bimetallic complex, the interchange of one or more ligands between the cationic and the anionic coordination entities result in coordination isomerism (a) Both A and R are correct and R is the correct explanation of A. (b) Both A and R are correct but R is not the correct explanation of A. (c) A is correct but R is wrong. (d) A is wrong but R is correct.

Answer»

(a) Both A and R are correct and R is the correct explanation of A.

57.

Fill in the blanks:[Pt (NH3)2Cl2]2+ shows …….. isomerism.

Answer»

Cis-trans isomerism

58.

Consider the following statements ………(i) Mohr’s salt answers the presence of Fe2+ , NH4+ and SO2-4 ions. (ii) Potassium Ferri thio cyanate answers the presence of K+ , Fe3+ , SCN ions(iii) In coordination compound, the complex ion does not loose its identity and never dissociate to give simple ions. Which of the above statements is/are correct?(a) (ii) only (b) (i) and (iii) (c) (ii) and (iii) (d) (iii) only

Answer»

(b) (i) and (iii)

59.

What are primary and secondary valency of cobalt in COCl3 .6NH3 ? (a) 3, 3 (b) 6, 3 (c) 3, 6 (d) 6, 6

Answer»

3, 6 are primary and secondary valency of cobalt in COCl3 .6NH3

60.

How many moles of AgCl are precipitated on the reaction of one mole of COCl3 . 5NH3 with AgNO3 ? (a) 3 (b) 1 (c) 2 (d) 5

Answer»

2 moles of AgCl are precipitated on the reaction of one mole of COCl3 . 5NH3 with AgNO3

61.

The hormone that influences ripening of fruits A) Gibberellins B) Ethylene C) Cytokinins D) Auxin

Answer»

(B) Ethylene

62.

Which plant hormone is responsible for closing of stomata ? A) Abscisic acid B) Auxin C) Cytokinin D) Ethylene

Answer»

(A) Abscisic acid

63.

Identify the incorrect pair. A) Thyroxin – Thyroid B) Adrenalin – Pituitary C) Insulin – PancreasD) Progesterone – Ovary

Answer»

B) Adrenalin – Pituitary

64.

Identify the following terms in the complex [K4Fe (CN)6] (i) Cation (ii) Anion (iii) ligands (iv) central metal ion (v) Oxidation state of metal (vi) IUPAC name

Answer»
K4[Fe(CN)6]
iCation(Simple)K+Potassium
iiAnion(Complex)[Fe(CN)6]4-
iiiLigands6CN-Cyanido(Hexa cynanido) - KC
ivCentral metal ionFe2+Ferrate(II)
vOxidation state of metalx + 6(-1) = -4
x = +2
(II)
viIUPAC NamePotassiumhexacynanido - KC ferrate(II)
65.

Give the IUPAC names of the following compounds. 1. Na2[Ni(EDTA)] 2. [CO (NH3)5Cl]2+

Answer»

1. Na2[Ni(EDTA)]  – Sodium 2,2′,2″,2″ – (ethane -1, 2- diyldinitrilo) tetraacetato nickelate (II) 

2. [CO (NH3)5Cl]2+ – Pentaamine chloro cobalt (III) ion

66.

Which of the following is an example of anionic complex? (a) [Ag(NH3)2]Cl (b) [CO (NH3)6]Cl3(c) [Fe (CO)5] (d) K4 [Fe(CN)6]

Answer»

(d) K4 [Fe(CN)6]

67.

Give one test to differentiate [CO(NH3)5Cl] SO4 and [CO(NH3)5SO4]Cl.

Answer»

(a) [CO(NH3)5Cl] SO4 → [CO(NH3)5Cl]+2 + SO42- 

(b) [CO(NH3)5 SO4] Cl → [CO(NH3)5Cl] SO4 

1. Aqueous solution of (a) gives sulphate ion. When an addition of BaCL, solution (a) gives white precipitate of BaSO4. But (b) does not give any precipitate.

2. Aqueous solution of (b) gives chloride ion. When an addition of AgNO3 solution (b) gives curdy white precipitate of AgCl. But (a) does not give any precipitate.

68.

Fill in the blanks:The shape of [Fe(H2O)6]2+ and [COF6]4- is ……

Answer»

The shape of [Fe(H2O)6]2+ and [COF6]4- is Octahedral

69.

Fill in the blanks:The hybridisation take place in [FeF6]4- and [Fe(H2O)6]2+is ……

Answer»

The hybridisation take place in [FeF6]4- and [Fe(H2O)6]2+is SP3d2 

70.

Fill in the blanks:The IUPAC name of [Cr (en)3] [Cr F6] is ......

Answer»

Tris (ethane -1,2- diamine) chromium (III) hexa fluorido chromate (III)

71.

Fill in the blanks:The coordination number of [Cr (en)3] [Cr F6] and oxidation state of Cr are ……

Answer»

The coordination number of [Cr (en)3] [Cr F6] and oxidation state of Cr are 6, +3.

72.

The IUPAC name of Na2 [Ni (EDTA)] is …………….. (a) Disodium tetra acetato nickalate (II) (b) Sodium 2, 2′, 2″, 2″‘ – (ethane 1,2 – diyldinitrilo) tetra acetato nickelate (II)(c) Ethylene tetra acetato nickalate (II) (d) Sodium tetraacetato nickel (II)

Answer»

(b) Sodium 2, 2’ , 2″, 2′” – (ethane – 1, 2 – diyldinitrilo) tetra acetato nickelate (II)

73.

Which one of the following is a homoleptic complex? (a) [CO(NH3)3](Cl3)](b) [Pt(NH3)2Cl2] (c) [Pt(NO2)(H2O)(NH3)2]Br (d) [Co(NH3)6]Cl3

Answer»

(d) [Co(NH3)6]Cl3

74.

Find the Odd one out(a) CN- (b) CI- (c) SO42-(d) NH3

Answer»

(d) It is a neutral ligand whereas others are negative ligands.

75.

The geometry possible in [Fe F6]4- and [CoF6]4- is …………….. (a) Trigonal bipyramidal (b) Square planar (c) Octahedral (d) Tetrahedral

Answer»

(c) Octahedral

76.

Find the Odd one out(a) [Ti (H2O)6]3+(b) [Fe (CO)5] (c) [FeF6]4+(d) [COF6]4-

Answer»

(b) Fe (CO)I has trigonalbipyramidal shape whereas others have octahedral shape.

77.

Find out the correct pair(a) [Ni(CO)4], [NiCl4]2- (b) [CuCl2], [Fe(CO)5] (c) [FeF6]4- , [Fe(CN)6]2- (d) [Ni(CO)4], [HgI3]-

Answer»

(a) It is tetrahedral whereas others have different shapes.

78.

What is the IUPAC name of [CO(CO3) (NH3)4]Cl? (a) Carbonato tetraammine cobalt (III) chloride (b) Tetraamminecarbanatocobalt(III) chloride (c) Carbonato tetra ammonium cobaltate (HI) . (d) Carbonato tetraammine cobaltate (II)

Answer»

(b) Tetraamminecarbanatocobalt(III) chloride

79.

Which one of the following is the IUPAC name of [Cr(en)3] [CrF6] ……(a) Triethylamine chromium (III) hexa fluriod chromium (III). (b) Tris (ethane -1, 2 – diamine) chromium (III) hexa flurido chromate (III) (c) Hexa fluoro chromium (III) tris (ethane – 1, 2 – diamined) chromium (III) (d) Hexa fluoro chromate (III) triethyl amine chromium (III)

Answer»

(b) Tris (ethane -1, 2 – diamine) chromium (III) hexa flurido chromate (III) 

80.

Which one of the following is a heteroleptic complex? (a) [Pt (NO2) (H2O) (NH3)2]Br (b) [Ni(CO)4] (c) [Cb(NH3)6]Cl3(d) K4[Fe(CN)6]

Answer»

(a) [Pt (NO2) (H2O) (NH3)2]Br 

81.

Fill in the blanks :The enzyme important in digestion is …… contains …….. coordinated to protein

Answer»

Carboxy peptidase, Zinc ion (Zn2+

82.

Find the Odd one out (a) NH3 (b) CN (c) H2O (d) PPh3

Answer»

(b) It is a negative ligand whereas others are neutral ligands

83.

Match the List I and List II using the code given below the lsit. List I List IIA. Octahedral1. [Ni(CO)]4B. Trigonal bipyramidal2. [COF6]3-C. Trigonal Planar3.  [Fe(CO)5]D. Trtrahedral4. [HgI3]-ABCD(a)1234(b)2341(c)3412(d)4123

Answer»

(b) 2, 3, 4, 1

84.

Give the IUPAC names of the following compounds. 1. [PdI2(ONO)2(H2O)2] 2. [Cr (PPh3)(CO)5]

Answer»

1. [PdI2(ONO)2(H2O)2] – Diaquadiiododinitrito – kopalladium (iv)

2. [Cr (PPh3)(CO)5] – Pentacarbonyltriphenylphosphanechromium (O)

85.

Find the Odd one out(a) [Ag (CN)2]-(b) [Fe (H2O)6]2+(c) [Fe F6]4-(d) [CO F​​​6]4-

Answer»

(a) [Ag (CN)2] is linear in shape whereas others arc in octahedral shape.

86.

The IUPAC name of [CO(NH3)4Cl2] Cl is ….(a) Tetrammine dichlorido cobalt (III) chloride (b) Dichlorido tetrammine cobalt (III) chloride (c) Tetrammine cobalt (III) trichloride (d) Tetrammine dichlorido cobaltate (III)

Answer»

(a) Tetramminedichloridocobalt (III) chloride

87.

Which one of the following is called as Zeise’s salt? (а) [Pt (NH3)4] [Pt Cl4] (b) K[PtCl3(C2H4)] (c) K4[Fe(CN)6](d) [Fe (CO)5]

Answer»

(b) K[PtCl3(C2H4)] 

88.

Fill in the blanks :……….. is used as antitumor drug in cancer treatment.

Answer»

Cis – Platin is used as antitumor drug in cancer treatment.

89.

Match the List I and List II using the code given below the listLIST ILIST IIA . Unpaired electron 01. [MnCl4]2+B . Unpaired electron 12. [CoF6]3-C . Unpaired electron 43. [Fe(CN6)]3D . Unpaired electron 54. [Ni(CN)4]2-Code :ABCD(a)4321(b)3214(c)1432(d)2143

Answer»

(a) 4, 3, 2, 1

90.

Which one of the following is not an example of complex salt? (a) Haemoglobin (b) Chlorophyll (c) Cobalamine (d) Ferrous ammonium sulphate

Answer»

(d) Ferrous ammonium sulphate

91.

The complex compound act as oxygen transporter of human is ……(a) Haemoglobin(b) Chlorophyll (c) Cyano cobalamine (d) Wilkinson compound

Answer»

(a) Haemoglobin

92.

Match the List I and List II using the code given below the listLIST I LIST IIA. [(PPh3)3 Rh Cl]1 . Ziegler Natta catalystB. TiCl4 + Al(C2H5)32. Cis - PlatinC. Na3[Ag(S2O3)2]3. Wilkinson's catalystD . [Pt(NH3)2Cl2]4. Sodium dithiosulphato Argentato(I)Code :ABCD(a)2431(b)4213(c)3142(d)1324

Answer»

(c) 3, 1, 4, 2

93.

How is spectrochemical series is used to identify the type of ligands?

Answer»

1. I- < Br- < SCN- < Cl < S2- < F- < OH- ≈ urea < OH2- < H2O < NCS- < EDTA4- < NH3 < en < NO-2 < CN < CO  

The above series is known as spectrochemical series.

2. The ligands present on the right side of the series such as carbonyl causes relatively larger crystal field splitting and are called strong ligands (or) strong field ligands.

3. The ligands on the left side are called weak field ligands and causes relatively smaller crystal field splitting.

94.

Which of the following is the IUPAC name of [CO(NH3)6]Cl3? (a) Hexamminecobalt (III) chloride (b) Hexammine cobalt (II) chloride (c) Hexamminechloro cobaltate(III) (d) Trichlorohexammine cobalt (III)

Answer»

(a) Hexamminecobalt (III) chloride

95.

Find the Odd one out (a) [CO (NH3)6]3+ (b) [Fe (H2O)6]2+ (c) [CO (NH3)3Cl3] (d) [Fe (CN)6]3+ 

Answer»

(c) It is heteroleptic complex whereas others are homoleptic complex.

96.

Write the IUPAC names of the following complexes. 1. [CO (NH3)5 CN] [CO(NH3)(CN)5] 2. [Pt (Py)4] [Pt Cl4]3. [CO (NH3)4Cl2]3 [Cr(CN)6]

Answer»

1. [CO (NH3)5 CN] [CO(NH3)(CN)5]  

Penta ammine cyanido – K C Cobalt (III) ammine penta cyanido – K C Cobaltate (III) 

2. [Pt (Py)4] [Pt Cl4]

Tetra pyridine platinum (II) tetrachlorido platinate (II) 

3. [CO (NH3)4Cl2]3 [Cr(CN)6]

Tetraammine dichlorido cobalt (III) hexacyanido KC chromate (III)

97.

[Pt (NH3)4] [Pt Cl4] is called as ……(a) Zeigler Natta Catalyst (b) Zeises’ salt (c) Magnus’s green salt (d) Mohr’s salt

Answer»

(c) Magnus’s green salt

98.

Give the structure for the following compounds.1. diamminesilver (I) dicyanidoargentate(I)2. Pentaammine nitrito-KNcobalt (III) ion 3. hexafluorido cobaltate (III) ion 4. dichloridobis(ethylenediamine) Cobalt (III) sulphate 5. Tetracarbonylnickel (0)

Answer»

1. diamminesilver(I) dicyanidoargentate(I) – [Ag(NH3)9] [Ag(CN)2

2. Pentaammine nitrito - KNcobalt (III) ion – [CO(NH3)5 NO2]+ 

3. hexafluorido cobaltate (III) ion – [COF6]3-

4. dichloridobis(ethylenediamine) Cobalt (III) sulphate – [CO(en)2Cl2]SO4

5. Tetracarbonylnickel (0) – [Ni (CO)4]

99.

Identify the lewis acid in K4[Fe(CN)6]? (a) Fe3+(b) Fe2+(c) K+(d) CN-

Answer»

The lewis acid in K4 [Fe(CN)6] is Fe2+ 

100.

Which one of the complex salt is acting as a photo sensitiser in photosynthesis process? (a) Wilkinson’s compound(b) Cobalamine (c) Chlorophyll (d) Haemoglobin

Answer»

(c) Chlorophyll