JEE Main > Coordination Compounds

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				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

						

						

						

					



				

			

		

	













 






	

		

			

			

















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