Multiple Choice QuestionsWhich one of the following molecules is expected to exhibit diamagnetic behaviour?
C2
O2
N2
N2
Which among the following will be named as dibromidobis(ethylene diamine)chromium(III) bromide?
[Cr(en)3]Br3
[Cr(en)2Br2]Br
[Cr(en)Br4]-
[Cr(en)Br4]-
Which one of the following statements is correct?
All amino acids except lysine are optically active
All amino acids are optically active
All amino acids except glycine are optically active
All amino acids except glycine are optically active
How many chiral compounds are possible on monochlorination of 2–methyl butane?
8
2
4
4
Which of the following facts about the complex [Cr(NH3)6]Cl3 is wrong?
The complex involves d2sp3 hybridisation and is octahedral in shape.
The complex is paramagnetic.
The complex is an outer orbital complex.
The complex is an outer orbital complex.
The magnetic moment (spin only) of [NiCl4]2- is:
1.82 BM
5.46 BM
2.82 BM
2.82 BM
C.
2.82 BM
In the paramagnetic and tetrahedral complex [NiCl4]2-, the nickel is in +2 oxidation state and the ion has the electronic configuration 3d8. The hybridization scheme is as shown in the figure.
A solution containing 2.675 of CoCl3. 6NH3(molar mass = 267.5 g mol–1) is passed through a cation exchanger. The chloride ions obtained is solution was treated with excess of AgNO3 to give 4.78 g of AgCl (molar mass = 143.5 g mol–1 ). The formula of the complex is
(At. mass of Ag = 108 u)
[Co(NH3)6]Cl3
[CoCl2(NH3)4]Cl
[CoCl3(NH3)3]
[CoCl3(NH3)3]
Which one of the following has an optical isomer?
[Zn(en)(NH3)2]2+
[Co(H2O)4(en)]3+
[Co(en)3]3+
[Co(en)3]3+
Out of the following, the alkene that exhibits optical isomerism is
2–methyl–2–pentene
3–methyl–2–pentene
4–methyl–1–pentene
4–methyl–1–pentene
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