Multiple Choice QuestionsWhich 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.
C.
The complex is an outer orbital complex.
In the case of d3 configuration, the number of unpaired electrons remains 3 whether the ligand is strong field or weak field. The hybridization scheme can be shown as follow :
Hence the complex is inner orbital complex as it involves (n - 1) d orbitals for hybridization, 3.93 = √n(n + 2) ; so n = 3 (where n is number of unpaired electron(s)).
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
The alkene that exhibits geometrical isomerism is
propene
2-methyl propene
2-butene
2-butene
Which of the following has an optical isomer ?
[CO(en)(NH3)2]2+
[CO(H2O)(en)]3+
[CO(H2O)(en)]3+
Switch
