Chemistry MCQs Online Quiz Test 34

– by
Solved MCQ on acid bases and salts class 7 thermochemistry MCQs. Objective type MCQ of is matter around us pure with MCQs chemistry 9th class solved quiz tests. Thermodynamics class 11 chemistry MCQs with 20 MCQ on is matter around us pure chemistry MCQs for class 9 chapter 5 notes in MCQs. Online chemistry class 10 MCQs of chemical bonding with solution and colligative properties MCQs.
Start Chemistry MCQs Quiz Test !

Chemistry MCQs For Competitive Exams

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