Organic Compounds Containing Nitrogen Quiz - ICSE Class 12 Chemistry

Free practice quiz: Organic Compounds Containing Nitrogen (ICSE Class 12 Chemistry). 28 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 12 Chemistry practice quiz has 28 multiple-choice questions on Organic Compounds Containing Nitrogen, and 28 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which of the following is the strongest base among the given options?

   1. Ammonia (NH3)
   2. Methylamine (CH3NH2)
   3. Dimethylamine ((CH3)2NH)
   4. Trimethylamine ((CH3)3N)
   Show answer

   Answer: C. Dimethylamine ((CH3)2NH)

   In the gaseous phase, basicity increases with the number of electron-donating alkyl groups. However, in aqueous solution, solvation effects play a crucial role. For methylamines in water, the order of basicity is generally (CH3)2NH > CH3NH2 > (CH3)3N > NH3. Dimethylamine exhibits the best balance of inductive effect and solvation.

2. When aniline is heated with chloroform in the presence of alcoholic KOH, it forms:

   1. Phenyl isocyanide
   2. Aniline hydrochloride
   3. Diphenylamine
   4. Ammonia
   Show answer

   Answer: A. Phenyl isocyanide

   This is the carbylamine reaction, a characteristic test for primary amines. Aniline, being a primary amine, reacts with chloroform and alcoholic KOH to produce phenyl isocyanide, which has a foul smell.

3. Diazotization of aniline with NaNO2 and HCl at 0-5°C produces:

   1. Phenol
   2. Benzenediazonium chloride
   3. Nitrobenzene
   4. Aniline hydrochloride
   Show answer

   Answer: B. Benzenediazonium chloride

   Diazotization is the reaction of a primary aromatic amine with nitrous acid (generated in situ from NaNO2 and a strong acid like HCl) at low temperatures (0-5°C) to form a diazonium salt. In this case, aniline reacts with NaNO2 and HCl to form benzenediazonium chloride.

4. The reaction of an aliphatic primary amine with nitrous acid typically leads to:

   1. N-nitrosoamine
   2. Aliphatic diazonium salt
   3. Alcohol
   4. Aldehyde
   Show answer

   Answer: C. Alcohol

   Aliphatic diazonium salts formed by the reaction of aliphatic primary amines with nitrous acid are very unstable. They readily decompose in the aqueous acidic medium to form alcohols, with the evolution of nitrogen gas. The intermediate formation of an N-nitrosoamine occurs with secondary amines.

5. The Schotten-Baumann reaction is used for:

   1. Acylation of amines
   2. Alkylation of amines
   3. Nitration of amines
   4. Diazotization of amines
   Show answer

   Answer: A. Acylation of amines

   The Schotten-Baumann reaction is a method for the acylation of amines (both primary and secondary) and alcohols. It typically involves the reaction with an acid chloride or anhydride in the presence of a base (like NaOH) in an aqueous or mixed solvent system.

More questions in this quiz

Answers and explanations are in the full quiz.

1. A compound 'X' on treatment with HNO2 gives a yellow oily nitrosoamine. 'X' is a:
2. Which of the following reagents can distinguish between aniline and N-methylaniline?
3. Carbylamine test is given by:
4. Aniline reacts with bromine water to give:
5. Which of the following reagents can be used to convert nitrobenzene to aniline?
6. The basicity of aliphatic amines is due to the presence of:
7. Which of the following amines is amphoteric?
8. The IUPAC name of acetanilide is:
9. Which reagent is used for the conversion of a nitro compound to an amine via reduction?
10. The functional group present in nitriles is:
11. The reaction of an alkyl cyanide with water in the presence of acid or base catalyst yields:
12. Electrophilic substitution in aniline primarily occurs at:
13. Which of the following is a diazonium compound?
14. Which of the following is a Sandmeyer reaction product?
15. The carbon atom in the cyano group of a nitrile is:
16. Which of the following amines is least basic?
17. Which of the following can be prepared by the Gabriel phthalimide synthesis?
18. The hydrolysis of benzonitrile gives:
19. The product of the reaction between benzenediazonium chloride and phenol in alkaline solution is:
20. The reduction of an imine by catalytic hydrogenation yields a:
21. The reaction of sodium ethoxide with chloroacetonitrile will yield:
22. The basicity of aniline is less than ammonia due to:
23. Which of the following reagents can distinguish between a primary and a secondary amine based on the solubility of the product in alkali?

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