Chemistry : Organic Chemistry – Some Basic Principles and Techniques

Identify, which of the below does not possess any element of symmetry?

• (+) and (-) tartaric acid

• Carbon tetrachlorid

• Methane

• Meso- tartaric acid

Which of the following fraction of coal tar distillation is obtained at 270-360° C ?

• Light oil

• Middle oil

• Green oil

• Heavy oil

Which one of the following can be purified by sublimation ?

• F₂

• Cl₂

• Br₂

• I₂

Corrosive sublimate (HgCl₂) can be used distinguish between

• formic acid and acetic acid

• acetaldehyde and butanone

• formaldehyde and propanone

• All of the above

The IUPAC name of crotonaldehyde is

• butenaldehyde

• butanal-1

• but-2-en-1-al

• prop-2-en-1-ol

Which of the following compounds is optically active?

• Butanal

• Butanol

• Butan-2-ol

• 2-methyl propan-2-ol

Which of the following compounds is not chiral?

• 1-chloro-2-methyl pentane

• 2-chloropentane

• 1-chloropentane

• 3-chloro-2-methyl pentane

The number of metamers possible for C₄H₁₀O is

• 1

• 2

• 3

• 4

Which of the following species is an electrophile?

• H₂O

• NH₃

• C₂H₅OH

• SO₃

Which of the following is a nucleophile?

• BH₃

• NH₃

• AlCl₃

• All of these