JEE Main > Coordination Compounds

Explore popular questions from Coordination Compounds for JEE Main. This collection covers Coordination Compounds previous year JEE Main questions hand picked by popular teachers.


Q 1.    

Correct4

Incorrect-1

Incorrect statement for addition compound is:

A

Simple salts do not lose their identify in double salt.

B

Complex compounds retain their identity in aqueous solution.

C

Simple salts lose their identity in complex compound.

Double salts retain their identity in aqueous solution.

Explanation

Q 2.    

Correct4

Incorrect-1

Neutral and symmetrical bidentate ligand is:

A

Oxalate

B

dien

C

gly

dipyridyl

Explanation



Q 3.    

Correct4

Incorrect-1

Which of the following pair contains only ambidenate ligand?

A

{tex} \mathrm { CN }^{-} , \mathrm { NH } _ { 3 } {/tex}

{tex} \mathrm { NO } _ { 2 } ^ { - } , \mathrm { SCN } ^ { - } {/tex}

C

{tex} \mathrm { H } _ { 2 } \mathrm { O } , \mathrm { en } {/tex}

D

en, dien

Explanation

Q 4.    

Correct4

Incorrect-1

EDTA is a:

A

Polydenate ligand

B

Chelating ligand

C

Flexidenate ligand

All of these

Explanation

Q 5.    

Correct4

Incorrect-1

Chelating ligand is:

A

thiocyanate

B

cyanide

Oxalate

D

Ammonia

Explanation

Q 6.    

Correct4

Incorrect-1

Which can't form chelates?

A

Didentate ligand

Ambidentate ligand

C

Tetradentate lignad

D

Flexidenate ligand

Explanation

Q 7.    

Correct4

Incorrect-1

An example for a double salt is:

A

Cuprammonium sulphate

Mohr's salt

C

Potassium ferricyanide

D

Cobalthexammine chloride

Explanation

Q 8.    

Correct4

Incorrect-1

Which of the following complexes are heteroleptic?

A

{tex} \left[ \mathrm { Cr } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] ^ { 3 + } {/tex}

{tex} \left[ \mathrm { Fe } \left( \mathrm { NH } _ { 3 } \right) _ { 4 } \mathrm { Cl } _ { 2 } \right] ^ { + } {/tex}

C

{tex} \left[ \mathrm { Mn } ( \mathrm { CN } ) _ { 6 } \right] ^ { 4 - } {/tex}

D

{tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] ^ { + 2 } {/tex}

Explanation

Q 9.    

Correct4

Incorrect-1

Which of the following can not act as ligand?

A

{tex} \mathrm { H } _ { 2 } \mathrm { N } - \mathrm { CH } _ { 2 } - \mathrm { COO } ^ { - } {/tex}

B

{tex} \mathrm { H } _ { 2 } \mathrm { N } - \mathrm { NH } _ { 2 } {/tex}

{tex} \left[ \mathrm { H } _ { 3 } \mathrm { N } - \mathrm { CH } _ { 2 } - \mathrm { CH } _ { 2 } - \mathrm { NH } _ { 3 } \right] ^ { 2 + } {/tex}

D

{tex} \mathrm { H } _ { 2 } \mathrm { N } - \mathrm { NH } _ { 3 } {/tex}

Explanation

Q 10.    

Correct4

Incorrect-1

The oxidizing agent is:

A

{tex} \mathrm { Fe } ( \mathrm { CO } ) _ { 5 } {/tex}

B

{tex} \mathrm { Mn } ( \mathrm { CO } ) _ { 5 } {/tex}

C

{tex} \mathrm { Mn } _ { 2 } ( \mathrm { CO } ) _ { 10 } {/tex}

{tex} \mathrm { Fe } _ { 2 } ( \mathrm { CO } ) _ { 9 } {/tex}

Explanation

Q 11.    

Correct4

Incorrect-1

Which follows EAN Rule?

A

{tex} \left[ \mathrm { Pd } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] \mathrm { Cl } _ { 4 } {/tex}

B

{tex} \left[ \mathrm { Cr } \left( \mathrm { NH } _ { 3 } \right) _ { 5 } \mathrm { Cl } \right] \mathrm { SO } _ { 4 } {/tex}

{tex} \mathrm { Na } _ { 4 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] {/tex}

D

{tex} \mathrm { K } _ { 3 } \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] {/tex}

Explanation

Q 12.    

Correct4

Incorrect-1

In sodium nitroprusside the oxidation number, coordination number and effective atomic number of iron are respectively:

A

{tex} + 3,6,35 {/tex}

B

{tex} + 3,6,36 {/tex}

C

{tex} + 2,3,36 {/tex}

{tex} + 2,6,36 {/tex}

Explanation

Q 13.    

Correct4

Incorrect-1

EAN of metal carbonyl {tex} \mathrm { M } ( \mathrm { CO } ) _ { \mathrm { x } } {/tex} is 36 if atomic number of metal {tex} \mathrm { M } {/tex} is {tex} 26 , {/tex} what is the value of {tex} \mathrm { x } ? {/tex}

A

4

B

8

5

D

6

Explanation



Q 14.    

Correct4

Incorrect-1

The IUPAC name of {tex} \left[ \mathrm { Pt } \left( \mathrm { NH } _ { 3 } \right) _ { 3 } ( \mathrm { Br } ) \left( \mathrm { NO } _ { 2 } \right) ( \mathrm { Cl } ) \right] \mathrm { Cl } {/tex} is:

A

Triamminechlorobromonitroplatinum (IV) chloride

Triamminebromochloronitroplatinum(IV) chloride

C

Triamminechlorobromoplatinum(IV) chloride

D

Triamminechloronitrobromoplatinum (IV) chloride

Explanation

Q 15.    

Correct4

Incorrect-1

Formula of potassium dicyanodioxalato nickelate (II) is:

A

{tex}{ K } _ { 4 } \left[ \mathrm { Ni } ( \mathrm { CN } ) ( \mathrm { OX } ) _ { 2 } \right] {/tex}

B

{tex} \mathrm { K } _ { 3 } \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 2 } ( \mathrm { OX } ) \right] {/tex}

{tex} \mathrm { K } _ { 4 } \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 2 } ( \mathrm { OX } ) _ { 2 } \right] {/tex}

D

{tex} \mathrm { K } _ { 2 } \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 2 } ( \mathrm { OX } ) _ { 2 } \right] {/tex}

Explanation

Q 16.    

Correct4

Incorrect-1

Select the correct IUPAC name of {tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] {/tex} {tex} \left[ \mathrm { Co } ( \mathrm { ONO } ) _ { 6 } \right] : {/tex}

A

Hexaamminecobalt (II) hexanitrito- {tex} O{/tex} cobalt (II)

B

Hexaamminecobalt (III) hexanitrito-N cobaltate (III)

C

Hexaamminecobalt (II) hexanitrito-{tex} \mathrm { O } {/tex} cobaltate (II)

Hexaamminecobalt (III) hexanitrito-{tex} \mathrm { O } {/tex} cobaltate (III)

Explanation

Q 17.    

Correct4

Incorrect-1

When 1 mol {tex} \mathrm { Cr } \mathrm { Cl } _ { 3 } \cdot 6 \mathrm { H } _ { 2 } \mathrm { O } {/tex} is treated with excess of {tex} \mathrm { AgNO } _ { 3 } , 2 \mathrm { mol } {/tex} of {tex} \mathrm { AgCl } {/tex} are obtained. The formula of the complex:

A

{tex} \left[ \mathrm { Cr } \mathrm { Cl } _ { 3 } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 3 } \right] \cdot 3 \mathrm { H } _ { 2 } \mathrm { O } {/tex}

B

{tex} \left[ \mathrm { Cr } \mathrm { Cl } _ { 2 } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 4 } \right] \cdot 2 \mathrm { H } _ { 2 } \mathrm { O } {/tex}

{tex} \left[ \mathrm { Cr } \mathrm { Cl } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 5 } \right] \mathrm { Cl } _ { 2 } \cdot \mathrm { H } _ { 2 } \mathrm { O } {/tex}

D

{tex} \left[ \mathrm { Cr } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 6 } \right] \mathrm { Cl } _ { 3 } {/tex}

Explanation

Q 18.    

Correct4

Incorrect-1

Which of the following shows maximum conductance?

{tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] \mathrm { Cl } _ { 3 } {/tex}

B

{tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 3 } \mathrm { Cl } _ { 3 } \right] {/tex}

C

{tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 4 } \mathrm { Cl } _ { 2 } \right] \mathrm { Cl } {/tex}

D

{tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 5 } \mathrm { Cl } \right] \mathrm { Cl } _ { 2 } {/tex}

Explanation



Q 19.    

Correct4

Incorrect-1

Which of the following ligand act as WFL for octahedral complex of {tex} \mathrm { Co } ^ { + 3 } {/tex} ion?

{tex} \mathrm { F } ^ { - } {/tex}

B

{tex} \mathrm { H } _ { 2 } \mathrm { O } {/tex}

C

{tex} \mathrm { C } _ { 2 } \mathrm { O } _ { 4 } ^ { - 2 } {/tex}

D

All of these

Explanation

Q 20.    

Correct4

Incorrect-1

{tex} \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 4 } \right] ^ { - 2 } {/tex} and {tex} \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 4 } \right] ^ { - 4 } {/tex} are not differ in:

A

Oxidation state and co-ordination number

B

Hybridisation state and geometry

Magnetic behavior

D

None of these

Explanation



Q 21.    

Correct4

Incorrect-1

Inner orbital complex which is paramagnetic in nature?

A

{tex} \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 5 } \right] ^ { - 3 } {/tex}

B

{tex} \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] ^ { - 4 } {/tex}

C

{tex} \left[ \mathrm { Fe } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 5 } ( \mathrm { NO } ) \right] \mathrm { SO } _ { 4 } {/tex}

{tex} \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] ^ { - 3 } {/tex}

Explanation

Q 22.    

Correct4

Incorrect-1

The complex ion {tex} \left[ \mathrm { Fe } ( \mathrm { CN } ) _ { 6 } \right] ^ { 4 - } {/tex} contains:

total of 36 electrons on {tex} \mathrm { Fe } ^ { 2 + } {/tex} cation

B

{tex} \mathrm { sp } ^ { 3 } \mathrm { d } ^ { 2 } {/tex} hybrid orbitals with octahedral structure

C

Twelve coordinate bonds

D

six sigma bonds

Explanation

Q 23.    

Correct4

Incorrect-1

{tex} \left[ \mathrm { NiCl } _ { 4 } \right] ^ { - 2 } {/tex} and {tex} \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 4 } \right] ^ { - 2 } {/tex} show similarity in:

A

Geometry

B

Magnetic nature

C

Hybridisation of state of Ni

Primary valency of Ni

Explanation

Q 24.    

Correct4

Incorrect-1

VBT can not explain the geometry of:

A

{tex} \left[ \mathrm { Cr } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] ^ { + 3 } {/tex}

B

{tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] ^ { + 3 } {/tex}

{tex} \left[ \mathrm { Cu } \left( \mathrm { NH } _ { 3 } \right) _ { 4 } \right] ^ { + 2 } {/tex}

D

{tex} \left[ \mathrm { Zn } \left( \mathrm { NH } _ { 3 } \right) _ { 4 } \right] ^ { + 2 } {/tex}

Explanation

Q 25.    

Correct4

Incorrect-1

Incorrect order of splitting energy is:

A

{tex} \left[ \mathrm { NiF } _ { 6 } \right] ^ { - 4 } < \left[ \mathrm { NiF } _ { 6 } \right] ^ { - 2 } {/tex}

B

{tex} \left[ \mathrm { Fe } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 6 } \right] ^ { + 3 } < \left[ \mathrm { Ru } \left( \mathrm { H } _ { 2 } \mathrm { O } \right) _ { 6 } \right] ^ { + 3 } {/tex}

C

{tex} \left[ \mathrm { Co } \left( \mathrm { NH } _ { 3 } \right) _ { 6 } \right] ^ { + 3 } < \left[ \mathrm { Co } ( \mathrm { en } ) _ { 3 } \right] ^ { + 3 } {/tex}

{tex} \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 4 } \right] ^ { - 2 } < \left[ \mathrm { Ni } ( \mathrm { CN } ) _ { 6 } \right] ^ { - 4 } {/tex}

Explanation