Question No:1

Assertion : Cu(OH)₂is soluble in NH₄OH but not in NaOH.
Reason : Cu(OH) ₂forms a soluble complex with NH₃.

[A] If both the assertion and reason are true and reason explains the assertion
[B] If both the assertion and reason are true but reason does not explain the assertion
[C] If assertion is true but reason is false
[D] If assertion is false but reason in true
[E] Both Assertion and Reason are false



Question No:2

Assertion :[Fe(H₂O)₅NO]SO₄is paramagnetic.
Reason :The Fe in [Fe(H₂O)₅NO]SO₄has three unpaired electrons.

[A] If both the assertion and reason are true and reason explains the assertion
[B] If both the assertion and reason are true but reason does not explain the assertion
[C] If assertion is true but reason is false
[D] If assertion is false but reason in true
[E] Both Assertion and Reason are false



Question No:3

Assertion :EDTA forms complex with divalent metals of 3d-series in the ratio of 1:1
Reason :EDTA has 4 – COOH groups.

[A] If both the assertion and reason are true and reason explains the assertion
[B] If both the assertion and reason are true but reason does not explain the assertion
[C] If assertion is true but reason is false
[D] If assertion is false but reason in true
[E] Both Assertion and Reason are false



Question No:4

Assertion :Linkage isomerism arises in coordination compounds containing ambidentate ligand.
Reason :Ambidentate ligand has two different donor atoms.

[A] If both the assertion and reason are true and reason explains the assertion
[B] If both the assertion and reason are true but reason does not explain the assertion
[C] If assertion is true but reason is false
[D] If assertion is false but reason in true
[E] Both Assertion and Reason are false



Question No:5

Assertion :CO[Hg(SCN)₆] and Hg[Co(SCN)₆] are isomers.
Reason :SCN^– is a stronger ligand as compared to NCS^–.

[A] If both the assertion and reason are true and reason explains the assertion
[B] If both the assertion and reason are true but reason does not explain the assertion
[C] If assertion is true but reason is false
[D] If assertion is false but reason in true
[E] Both Assertion and Reason are false



Question No:6

Assertion :[Fe(CN)₆] ^3– is weakly paramagnetic while [Fe(CN)₆]^4– is diamagnetic.
Reason :[Fe(CN₆)]^3– has +3 oxidation state while [Fe(CN₆) ] ^4– has +2 oxidation state.

[A] If both the assertion and reason are true and reason explains the assertion
[B] If both the assertion and reason are true but reason does not explain the assertion
[C] If assertion is true but reason is false
[D] If assertion is false but reason in true
[E] Both Assertion and Reason are false



Question No:7

Assertion :NF₃ is a weaker ligand than N(CH₃) ₃.
Reason :NF₃ ionizes to give F^– ions in aqueous solution.

[A] If both the assertion and reason are true and reason explains the assertion
[B] If both the assertion and reason are true but reason does not explain the assertion
[C] If assertion is true but reason is false
[D] If assertion is false but reason in true
[E] Both Assertion and Reason are false



Question No:8

Assertion :In zieses salt coordination no. of Pt is five
Reason :ethene is bidentate ligand

[A] If both the assertion and reason are true and reason explains the assertion
[B] If both the assertion and reason are true but reason does not explain the assertion
[C] If assertion is true but reason is false
[D] Both assertion and reason are false
[E] Both Assertion and Reason are false



Question No:9

Assertion :d⁵ configuration is more stable than d⁴
Reason :d⁵ has more exchange energy as compared to d⁴ because 10 & 6 exchanges are possible in d⁵ & d⁴ respectively.

[A] If both the assertion and reason are true and reason explains the assertion
[B] If both the assertion and reason are true but reason does not explain the assertion
[C] If assertion is true but reason is false
[D] If assertion is false but reason in true
[E] Both Assertion and Reason are false



Question No:10

The total number of Ligands attached to the central metal ion through coordination(sigma) bond is called.

[A] Valency of the metal ion
[B] Oxidation state of the metal ion
[C] Coordination number of metal ion
[D] None of the above



Question No:11

Select bidentate or didentate ligand from the following.

[A] CO
[B] SCN^–
[C] CH₃COO^–
[D] D) C₂O₄^2-



Question No:12

The oxidation state of Ag in Tollen’s reagent is –

[A] 0
[B] 1
[C] 1.5
[D] 2



Question No:13

The co-ordination number of a metal in co-ordination compound is

[A] Same as primary valency
[B] Sum of primary and secondary valencies
[C] Same as secondary valency
[D] None of the above



Question No:14

For a stable complex, the value of ionic potential [ ionic charge/ ionic radius] must be.

[A] Small
[B] Large
[C] Zero
[D] None of these