Organic compounds containing Nitrogen - Online Test

Q1. In Pyridine, preferred site of nucleophilic substitution is one of the following positions
Answer : Option B
Explaination / Solution:

Due to resonance, this position is electron rich and steric hindrance will be least.

Q2. Which of the following is an intermediate in the mechanism for amide synthesis through acylation o
Answer : Option C
Explaination / Solution:

  1. A is the intermediate formed by nucleophilic attack by CH3NH2 on carbonyl carbon of CH3COCl.

Q3. Aniline does not undergo one of the following
Answer : Option C
Explaination / Solution:

Because of lot of electron density on N of NH2.
Q4. Benzene diazonium chloride reacts with phenol in which the phenol molecule at its para position is coupled with the diazonium salt to form p – hydroxyazobenzene
Answer : Option D
Explaination / Solution:

This normal N-N coupling.

Q5. The reaction of Benzene diazonium chloride with aniline yields
Answer : Option A
Explaination / Solution:

This is also N-N coupling.

Q6. Anisole reacts with a mixture of concentrated sulphuric and nitric acids to yield a mixture of ortho and para nitroanisole 

Answer : Option C
Explaination / Solution:

Para isomer is major because ethere is no steric hinderance and also at para +M effect will work effectively.

Q7. In a coupling reaction, the azo products obtained, involve an
Answer : Option D
Explaination / Solution:

In coupling reaction Diazonium salt to act as a electrophile and –N=N- bond forms.

Q8. When one of the following reacts with NaOH, the product is sodium benzoate
Answer : Option B
Explaination / Solution:

Benzoic acid reacts with NaOH to form sodium benzoate.

Q9. Esterification is the reaction of one of the below compounds with alcohol
Answer : Option A
Explaination / Solution:

Carboxylic acid and alcohol reacts to form an ester.

Q10. When methylamine reacts with HCl the product is
Answer : Option B
Explaination / Solution:

reacts with HCl to form salt.