Skip to content

Federal (FBISE) · Chapter test · Free

2nd Year Chemistry Chapter 12 Test12. Nitrogen Compounds

30 marks · 40 minutes · 21 questions. Covers: 12. Nitrogen Compounds.

Your school name

2nd Year Chemistry Chapter 12 Test

2nd Year · Chemistry · Federal (FBISE)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 30Time: 40 minutes

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

  1. Reaction of acyl chloride with primary amines produces:
    1. N-substituted amides
    2. Alcohols
    3. Esters
    4. Aldehydes
  2. The product formed when acetaldehyde reacts with HCN is:
    1. Acetone cyanohydrin
    2. Formaldehyde cyanohydrin
    3. Acetaldehyde cyanohydrin
    4. Ethanol
  3. Warming benzene diazonium chloride with water gives:
    1. Aniline
    2. Phenol
    3. Benzoic acid
    4. Benzaldehyde
  4. Which reducing agent is used for nitrile reduction?
    1. LiAlH4LiAlH_4
    2. H2SO4H_2SO_4
    3. NaCl
    4. KMnO4KMnO_4
  5. The product formed when CH₃Br reacts with KCN in ethanol is:
    1. CH₃OH
    2. CH₃CN
    3. CH₄
    4. CH₃COOH
  6. Which catalyst is used in the formation of cyanohydrin?
    1. H₂SO₄
    2. KCN
    3. NaOH
    4. Ni
  7. Phenylamine is a weaker base than ammonia because:
    1. Lone pair is delocalized in the ring
    2. Lone pair is easily available
    3. Ethyl group stabilizes it
    4. It has no resonance
  8. Ethyl group in ethyl amine is:
    1. Electron-donating
    2. Electron-withdrawing
    3. Resonance group
    4. None of these
  9. Azo compounds are widely used as:
    1. Fuels
    2. Dyes
    3. Fertilizers
    4. Explosives
  10. What happens when benzenediazonium chloride reacts with phenol in NaOH(aq)?
    1. Formation of phenylhydrazine
    2. Formation of an azo compound
    3. Formation of a nitro compound
    4. Formation of an ester

Q2. Short questions (Attempt any 6 of 8 · 6 × 2 = 12)

  1. Why is HCN not used directly in reactions?
  2. Give the equation for the reduction of ethanamide.
  3. Explain the role of ethyl group as an electron-donating group.
  4. Why do amino acids exist as zwitter ions in solid state?
  5. Mention one industrial use of azo dyes.
  6. Write the pKb values of ammonia, ethyl amine, and phenylamine.
  7. Name the yellow dye obtained from benzene diazonium chloride and phenylamine.
  8. What is the difference between an amine and an amide?

Q3. Long questions (Attempt any 2 of 3 · 2 × 4 = 8)

  1. Describe the reduction of nitriles to form amines. Support with chemical reactions.
  2. Write a detailed note on essential and non-essential amino acids and their biological importance.
  3. Describe the reaction of phenylamine with HNO₂ and dilute acid below 1°C to produce the diazonium salt. What is the significance of this reaction in organic chemistry?