Multiple Choice QuestionsWhich of the following compounds is not chiral?
1-Chloropentane
2-Chloropentane
1 -Chloro-2-methylpentane
3-Chloro-2-methylpentane
Amongst the following, the most stable complex is
[Fe(H2O)6]3+
[Fe(NH3)6]3+
[Fe(C2O4)3]3-
[FeCl6]3-
Assertion : Linkage isomerism arises in coordination compounds containing ambidentate ligand.
Reason: Ambidentate ligand has two different donor atoms.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Which of the following complexes do not follow EAN rule ?
[Fe(CN)6]4-
[Fe(CN)6]3-
Ni(CO)4
[PdCl4]2-
Assertion : EDTA forms complex with divalent metals of 3d-series in the ratio of 1:1.
Reason: EDTA has 4-COOH groups.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion : In a mixture of Cd(II) and Cu(II),Cd2+ gets precipitated in presence of KCN by H2S.
Reason : The stability constant of [Cu(CN)4]3- is greater than [Cd(CN)4]2-.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
A.
If both assertion and reason are true and reason is the correct explanation of assertion.
Cd2+ + 2CN- Cd(CN)2
Cd(CN)2 + 2CN- [Cd(CN)4]2-
[Cd(CN)4]2- is colourless compound and not too stable. When hydrogen sulphide gas is added, cadmium sulphide is precipitated.
[Cd(CN)4]2- + H2S CdS + 2H+ + 4CN-
But in case of Cu2+,
Cu2+ + 2CN- Cu(CN)2
2Cu(CN)2 2CuCN + (CN)2
CuCN + 3CN- [Cu(CN)4]3-
This complex is so stable (i.e., [Cu+] is too low) that H2S cannot precipitate Cu(I) sulphide (Cu2S).
Assertion : [Fe(H2O)5NO]SO4 is paramagnetic.
Reason : The Fe in [Fe(H2O)5NO]SO4 has three unpaired electrons.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
The wavelength of light absorbed is highest in
[Co(NH3)5Cl]2+
[Co(NH3)5H2O]3+
[Co(NH3)6]3+
[Co(en)3]3+
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