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Q.1: Mixture of catalysts Cr2O3 + A?2O3 + SiO2 at 500?C are used when benzene is prepared from——–?

  1. acetylene
  2. N-hexane
  3. Benzene sulphonic acid
  4. Sodium benzoate

B

Q.2: Which is fused cyclic aromatic compound ———–?

  1. diphenyl amine
  2. diphenyl methane
  3. naphthalene
  4. biphenyl

C

Q.3: Acetophenone is a———–?

  1. Ether
  2. Ketone
  3. Aldehyde
  4. Ester

B

Q.4: Benzene does not undergo———-?

  1. Substitution reaction
  2. Addition reaction
  3. Polymerization reactions
  4. Oxidation reactions

C

Q.5: Nitronium ion is———-?

  1. NO3
  2. NO
  3. NO2-
  4. NO2+

D

Q.6: Benzene is heated in air with V2O5 at 450°C it undergoes——–?

  1. Substitution reaction
  2. Addition reaction
  3. Elimination reaction
  4. Oxidation reaction

D

Q.7: The preparation of benzene from acetylene can also be said as———?

  1. Oxidation
  2. Polymerization
  3. Dehydration
  4. Condensation

B

Q.8: Reacting bromine with benzene in the presence of sunlight will result in——–?

  1. The rupturing of benzene ring
  2. Substitution reaction
  3. Addition reaction
  4. No-reaction

C

Q.9: During sulphonation of benzene H2SO4 generates the electrophile ———?

  1. HSO4-
  2. SO2
  3. SO3
  4. H+

C

Q.10: Which compound will readily undergo sulphonation ?

  1. Benzene
  2. Nitro benzene
  3. Toluene
  4. Chlorobenzene

C