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Federal (FBISE) · Chapter test · Free

1st Year Chemistry Chapter 20 Test20. Nitrogen Compounds-Amines

30 marks · 40 minutes · 21 questions. Covers: 20. Nitrogen Compounds-Amines.

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1st Year Chemistry Chapter 20 Test

1st 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. Amines are derivatives of:
    1. Water
    2. Ammonia
    3. Alcohol
    4. Ether
  2. Catalytic reduction of nitriles uses:
    1. H₂ / Ni
    2. H₂ / Cu
    3. H₂ / Fe
    4. H₂ / MnO₂
  3. Which can donate an electron pair?
    1. RX
    2. RCOR
    3. RCHO
    4. RNH2RNH_2
  4. The polar nature of the N-H bond in amines leads to:
    1. Ionic bonding
    2. Covalent bonding
    3. Hydrogen bonding
    4. Metallic bonding
  5. Nitrogen in amines is:
    1. sp² hybridized
    2. sp³ hybridized
    3. sp hybridized
    4. Unhybridized
  6. The reaction of alkyl halides with ammonia produces:
    1. Only primary amine
    2. Mixture of all salts
    3. Only tertiary amine
    4. Only quaternary salt
  7. Reaction of amine with acid halide produces:
    1. Ester
    2. Alcohol
    3. Amide
    4. Ether
  8. Hoffmann degradation of amides produces:
    1. Secondary amines
    2. Primary amines
    3. Tertiary amines
    4. Quaternary salts
  9. Reaction of amines with nitrous acid produces:
    1. Amide
    2. Alkane
    3. Alcohol
    4. Diazomium salt
  10. General formula for secondary amine is:
    1. RNH2RNH_2
    2. RNHR
    3. NH3NH_3
    4. RCONH2RCONH_2

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

  1. Why must the temperature be kept below 10°C during diazonium salt formation?
  2. What are the products obtained when alkyl halide reacts with ammonia?
  3. How are amines prepared from alkyl halides?
  4. Why is excess ammonia used in the preparation of amines from alkyl halides?
  5. What are amines?
  6. Why is methyl amine more basic than ammonia?
  7. What is the function of KOH in the preparation of amines from alkyl halides?
  8. How would you prepare Diazonium salt?

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

  1. Explain how LiAlH₄ and bromine with KOH convert amides into primary amines.
  2. Explain the basicity of ammonia and methyl amine.
  3. What are nitriles? How they can be reduced?