Chemistry : Organic Chemistry – Some Basic Principles and Techniques

The product of following reaction is

2CH₃MgBr + CH₂O $\to$

• CH₃OH

• C₂H₅OH

• CH₄

• C₂H₆

Sodium formate on heating gives

• oxalic acid and H₂

• sodium oxalate and H₂

• sodium oxalate

• CO₂ and caustic soda

Which among the following is the most stable carbocation?

• 

• 

• $\stackrel{+}{\mathrm{C}}{\mathrm{H}}_3$

• CH₃$\stackrel{+}{\mathrm{C}}$H₂

Products of the following reaction

CH₃C $\equiv$C.CH₂CH₃ $\underset{\left(2\right) \mathrm{Hydrolysis}}{\overset{\left(1\right)\hspace{0.17em}{\mathrm{O}}_3}{\to }}$.... are

• CH₃CHO + CH₃CH₂CHO

• CH₃COOH + CH₃COCH₃

• CH₃COOH + HOOC.CH₂CH₃

• CH₃COOH + CO₂

Which one of the following compounds is most acidic?

• Cl - CH₂ - CH₂ - OH

• 

• 

• 

Which one of the following is expected to exhibit optical isomerism? (en = ethylenediamine)

• cis-[Pt (NH₃)₂Cl₂]

• trans-[Co (en)₂ Cl₂]

• trans- [Pt (NH₃)₂Cl₂]

• cis-[Co(en)₂Cl₂]

Names of some compounds are given. Which one is not correct in IUPAC system?

• $\underset{3-\mathrm{methyl}-2-\mathrm{butanol}}{{\mathrm{CH}}_3 - \mathrm{CH}\left(\mathrm{OH}\right) -\hspace{0.17em}\mathrm{CH}\left({\mathrm{CH}}_3\right) - {\mathrm{CH}}_3}$

• $\underset{4-\mathrm{methyl}-2-\mathrm{pentyne}}{{\mathrm{CH}}_3 - \mathrm{C}\equiv \mathrm{C} - \mathrm{CH}\left({\mathrm{CH}}_3\right)}$

• $\underset{2-\mathrm{ethyl}-3\mathrm{methyl}-\mathrm{but}-1-\mathrm{ene}}{{\mathrm{CH}}_3 - {\mathrm{CH}}_2 - \mathrm{C}\left({\mathrm{CH}}_2\right) - \mathrm{CH}\left({\mathrm{CH}}_3\right) -{\mathrm{CH}}_3}$

• 

The best method for the separation of naphthalene and benzoic acid from their mixture is

• chromatography

• crystallisation

• distillation

• sublimation

R - NH - COH $\underset{\mathrm{Pyridine}}{\overset{{\mathrm{POCl}}_3}{\to }}$ Product

In the given reaction, what will be the product?

• R - N = C = O

• R - $\stackrel{+}{\mathrm{N}}$ $\equiv$ C^-

• R - C $\equiv$ N

• None of these

Which of the following will show geometrical isomerism?

• but-1-ene

• but-2-ene

• 2, 3-dichlorobutane

• ethene