Coordination Compounds Test

Result

Coordination Compounds Test - 17

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Weekly Quiz Competition

Question 1
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Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.
Q. According to IUPAC nomenclature, sodium nitroprusside is named as

A
sodium nitroferricyanide

B
sodium nitroferrocyanide

C
sodium pentacyanonitrosylferrate (III)

D
sodium pentacyanonitrosyliumferrate (II)

Solution

IUPAC name of sodium nitroprusside Na₂[Fe(CN)₅NO] is sodium pentacyanonitrosyl ferrate (III) because in it NO is neutral ligand and the oxidation number of Fe is +3. Which is calculated as Na₂[Fe(CN)₅NO]
2×(+1)+x+5×(−1)+1×0 = 0
2 + x - 5 = 0
x - 3 = 0
x = + 3
Question 2
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The formula of the complex hexamminecobalt (III) chloride sulphate is

A
[Co(NH₃)₆]CISO₄

B
[Co(NH₃)₆CI]SO₄

C
[Co(NH₃)₆CISO₄]

D
None of these

Solution

The formula of complex hexamminecobalt (III) chloride sulphate is [Co(NH₃)₆]CISO₄.
Question 3
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The IUPAC name of the compound [Cr(NH₃)₅(NCS)][ZnCI₄] is

A
pentammine isothiocyanatochromium (III) tetrachlorozincate (II)

B
pentaammine thiocyanatochromium (III) tetrachlorozincate (II)

C
pentammine isothiocyanatochromium (0) tetrachlorozincate (IV)

D
pentammine thiocyanatochromium (0) tetrachlorozincate (IV

Solution

The lUPAC name of [Cr(NH₃)₅(NCS)][ZnCI₄] is pentammine isothiocyanatochromium (III) tetrachlorozincate (II).
Question 4
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The IUPAC name of the complex [(CO)₅Mn - Mn(CO)₅] is

A
bis (pentacarbonyl dimanganese)

B
decacarbonyldimanganate (0).

C
bis (pentracarbonylmanganese) (0)

D
bis (pentacarbonyldimanganate) (ll)

Solution

Decacarbonyldimanganese (0), Mn₂(CO)₁₀, is made up of two square pyramidal Mn(CO)₅ units joined by a Mn-Mn bond.
Question 5
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The donor sites of EDTA ligand are

A
O-atoms only

B
N-atoms only

C
two N-atoms and four O-atoms

D
three N-atoms of EDTA ion

Solution

Ethylenediaminetetraacetate ion (EDTA)^4- is an important hexadentate ligand. It can bind through two nitrogen and four oxygen atoms to a central metal ion.
Question 6
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The IUPAC name of [Ni(PPh₃)₂CI₂]²⁺ is

A
bis dichloro(triphenylphosphine) nickel (II) ion

B
dichloro bis (triphenylphosphine) nickel (ll)ion

C
dichloro triphenylphosphine nickel (II) ion

D
triphenylphosphine nickel (ll)dichloride

Solution

The IUPAC name of [Ni(PPh₃)CI₂]²⁺ is dichloro bis (triphenylphosphine) nickel (ll)ion.
Question 7
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Formula of brown ring complex is

A
[Fe(H₂O)(NO₂)₅]SO₄

B
[Fe(H₂O)₃(NO₂)₃]SO₄

C
[Fe(H₂O)₅(NO)]SO₄

D
[Fe(H₂O)₄(NO)₂]SO₄

Solution

The brown ring test for nitrates depend on the ability of Fe²⁺ to reduce nitrates to nitric oxide, which reacts with Fe²⁺ to form a brown coloured complex.
Question 8
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The IUPAC name of the compound K[SbCl₅Ph] is

A
Potassium chlorophenylantimonate (V)

B
Potassium pentachloro(phenyl) antimonate (V)

C
Potassium pentachlorobenzylantimonate (V)

D
None of the above

Solution

The IUPAC name of the compound K[SbCl₅Ph] is potassium pentachloro(phenyl) antimonate (V).
Question 9
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K₂[OsCI₅N] is named as

A
potassium pentachloroazoosmate(VI)

B
potassium pentachloroazoosmate(VII)

C
potassium pentachloroazidoosmate(VI)

D
potassium pentachloronitroniumosmate(VI)

Solution

K2[OsCI5N] is named as potassium pentachlorozoosmate (VI)
Question 10
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What is the IUPAC name of compound NaBH₄?

A
Sodium boronhydride

B
Sodium tetrahydridoboron (III)

C
Sodium tetrahydridoborate (III)

D
Sodium tetrahydridoborate (I)

Solution

The IUPAC name of NaBH₄ is sodium tetrahydridoborate
Question 11
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Matching List Type
Direction (Q. Nos. 11 and 12) Choices for the correct combination of elements from Column I and Column II are given as options (a), (b), (c) and (d), out of which one is correct.
Q.
Match the Column I with Column II and mark the correct option from the codes given below.

A
a

B
b

C
c

D
d

Solution

(i) → (q,t), (ii) → (q ,s), (iii) → (r,t), (iv) → (p ,s)

The complex PtCl4.5NH3 is designated as [Pt(NH3)5Cl]Cl3 which ionizes to [Pt(NH3)5Cl]3+ + 3Cl- ions. Thus, three moles of AgCl are produced from 3Cl- ions with AgNO3.
So, PtCl4.5NH3 is Cationic Complex.
Question 12
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Match the Column I with Column II and mark the correct option from the codes given below.

A
a

B
b

C
c

D
d

Solution

(i) → (q), (ii) → (p), (iii) → (s,t), (iv) → (r)
Question 13
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Statement Type
Direction (Q. No. 13) This section is based on Statement I and Statement II. Select the correct answer from the codes given below.
Q.
Statement l : IUPAC name of the complex [(NH₃)₅—Cr—OH—Cr (NH₃)₅]CI₅ is pentammine chromium-μ-hydroxopentammine chromium (III) chloride.
Statement II : IUPAC name of the complex [Ni(dmg)₂] is bis (dimethylglyoximato) nickel (III).

A
Both Statement I and Statement II are correct and Statement II is the correct explanation of Statement I

B
Both Statement I and Statement II are correct but Statement II is not the correct explanation of Statement I

C
Statement I is correct but Statement II is incorrect

D
Statement II is correct but Statement I is incorrect

Solution

[Ni(dmg)₂] : bis (dimethylglyoximato) nickel (II)