Chapter 13: Organic Nitrogen Compounds — Online MCQ Test
CHEMISTRY · CLASS 12th · Tamil Nadu State Board
Practice Chapter 13: Organic Nitrogen Compounds with a free chapter-wise online MCQ test.
This chapter covers: Exploring organic nitrogen chemistry this chapter details preparation properties and synthetic uses of nitro compounds amines and diazonium salts. It covers basicity trends and che....
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Chapter 13: Organic Nitrogen Compounds — Important Questions & Answers
Which of the following is a nitro compound?
- A. CH3NH2
- B. C2H5NO2
- C. C6H5NH2
- D. CH3CONH2
Answer: B. C2H5NO2
Nitro compounds contain the nitro group, –NO2. C2H5NO2 represents a nitro compound.
Nitro compounds contain the nitro group, –NO2. C2H5NO2 represents a nitro compound.
Aniline is also called:
- A. Methylamine
- B. Phenylamine
- C. Benzamide
- D. Nitrobenzene
Answer: B. Phenylamine
Aniline is the common name for phenylamine, C6H5NH2.
Aniline is the common name for phenylamine, C6H5NH2.
Which reagent is used to convert an aromatic primary amine into a diazonium salt at 0–5 °C?
- A. HCl and NaNO2
- B. NaOH and Br2
- C. Zn/HCl
- D. LiAlH4
Answer: A. HCl and NaNO2
Nitrous acid is generated in situ using NaNO2 and HCl, which diazotizes aromatic primary amines at low temperature.
Nitrous acid is generated in situ using NaNO2 and HCl, which diazotizes aromatic primary amines at low temperature.
Which of the following pairs can be distinguished by the azo-dye test?
- A. Aniline and acetamide
- B. Ethylamine and diethylamine
- C. Nitrobenzene and aniline
- D. Ammonia and methylamine
Answer: C. Nitrobenzene and aniline
Aniline gives a positive azo-dye test through diazotization and coupling, whereas nitrobenzene does not.
Aniline gives a positive azo-dye test through diazotization and coupling, whereas nitrobenzene does not.
Which of the following is the correct product when benzene diazonium chloride is treated with CuCN?
- A. Chlorobenzene
- B. Benzonitrile
- C. Phenol
- D. Aniline
Answer: B. Benzonitrile
This is the Sandmeyer reaction, where the diazonium group is replaced by CN to form benzonitrile.
This is the Sandmeyer reaction, where the diazonium group is replaced by CN to form benzonitrile.