Chemistry : Organic Chemistry – Some Basic Principles and Techniques

Geometrical isomers can exist for:

• CH₃CH(CH₃)CH₂CH₂CH₃

• CH₃CH=CH.CH₃

• CH₃CH=CH₂

• ClH₂C-CH₂Cl

Which of the following will have a meso-isomer also?

• 2-chlorobutane

• 2,3-dichlorobutane

• 2,3-dichloropentane

• 2-hydroxypropanoic acid

In this reaction

CH₃CHO + HCN → CH₃CH(OH)CN $\stackrel{\mathrm{H}.\mathrm{OH}}{\to }$ CH₃CH(OH)COOH

an asymmetric centre is generated. The acid obtained would be

• 50% D + 50% L-isomer

• 20% D + 80% L-isomer

• D-isomer

• L-isomer

Which one of the following octahedral complexes will not show geometrical isomerism? (A and B are monodentate ligands)

• [MA₄B₂]

• [MA₅B]

• [MA₂B₄]

• [MA₃B₃]

According to IUPAC nomenclature sodium nitroprusside is named as

• sodium pentacyanonitrosyl ferrate (II)

• sodium pentacyanonitrosyl ferrate (III)

• sodium nitroferricyanide

• sodium nitroferrocyanide

The IUPAC name for

• 5-chloro-hex-2-ene

• 2-chloro-hex-5-ene

• 1-chloro-1-methyl-pent-3-ene

• 5-chloro-5-methyl-pent-2-ene

In cyclopropane, cyclobutane and cyclohexane, the common group is

• 

• 

• -CH₃

• 

CH₃CH₂OH and CH₃OCH₃ are the examples of

• chain isomerism

• functional isomerism

• position isomerism

• metamerism

In the following reaction

RCH₂COOH $\stackrel{{\mathrm{Br}}_2/ \mathrm{P}}{\to } \mathrm{X} \stackrel{\mathrm{excess} {\mathrm{NH}}_3}{\to }$ Y

The major maounts of X and Y are

• RCHBrCONH₂; RCH(NH₂)COOH

• RCHBrCOOH; RCH(NH₂)COOH

• RCH₂COBr; RCH₂COONH₄

• RCHBrCOOH; RCH₂CONH₂

Naphthalene can be easily purified by

• sublimation

• crystallisation

• distillation

• vaporisation