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Chlorination of toluene in the presence of sublight produces

1. Benzyl chloride
2. o - chlorotoluene
3. p - chlorotoluene
4. benzoic acid

✅ Correct Answer: 1

The heat of hydrogenation of cyclohexene is

1. ?239 kJ mol-1
2. ?208 kJ mol-1
3. ?119.5 kJ/mol
4. ?119.5 kcal/mol

✅ Correct Answer: 3

The resonance energy of benzene is

1. 150.5 kJ/mol
2. 250.5 kJ/mol
3. 150.5 Cal/mol
4. 250.5 Cal/mol

✅ Correct Answer: 1

What catalyst is employed when benzene is prepared from acetylene at 70?C?

1. Cr2O3 + A?2O3 + SiO2
2. Raney nickel
3. Organo-nickel
4. Ni 250 - 300?C

✅ Correct Answer: 3

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

✅ Correct Answer: 2

Which one of the following methods will not give benzene?

1. Heating sod. Salt of Benzoic acid with soda lime
2. Distilling phenol with Zn dust
3. Chlorobenzene with NaOH at 360?C & 150atm.
4. Hydrolysis of benzene sulphonic acid with super heated steam.

✅ Correct Answer: 3

Which is fused cyclic aromatic compound

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

✅ Correct Answer: 3

In Friedel Craft Alkylation A?C?3 is used to generate

1. Strong nucleophile
2. Weak nucleophile
3. Strong electrophile
4. Weak electrophile

✅ Correct Answer: 3

Acetophenone is a

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

✅ Correct Answer: 2

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

✅ Correct Answer: 3

Benzene does not undergo

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

✅ Correct Answer: 3

During sulphonation of benzene H2SO4 generates the electrophile

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

✅ Correct Answer: 3

Nitronium ion is

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

✅ Correct Answer: 4

Which compound will readily undergo sulphonation?

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

✅ Correct Answer: 3

Benzene is heated in air with V2O5 at 450?C it undergoes

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

✅ Correct Answer: 4

Which one of the following statement is not correct about benzene?

1. On hydrogenation 208 KJ/mole is liberated
2. C-H bond length in benzene is 1.09 A?
3. Molecular mass of benzene is 78.108
4. Resonance energy of benzene is 150.5 K Cal/mole

✅ Correct Answer: 4

The preparation of benzene from acetylene can also be said as

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

✅ Correct Answer: 2

What is required other than anhydrous A?C?3 when toluene is prepared by Friedal craft reaction?

1. C6H6
2. C6H6 + CH3C?
3. C6H5C2H5
4. C6H5C? & CH3Cl

✅ Correct Answer: 2

Replacement of hydrogen of benzene by alkyl group in the presence of alkyl halide & aluminum chloride is known as

1. Dows process
2. Friedel & Craft acylation
3. Friedel & Craft alkylation
4. Clemmenson reduction

✅ Correct Answer: 3

Which one of the following radical is called benzyl radical?

1. C6H5?
2. C6H5?C
3. C6H5?CH-
4. C6H5?CH2-

✅ Correct Answer: 4

Which compound form benzoic acid on oxidation with acidified KMnO4 or K2Cr2O7

1. Toluene
2. Ethyl benzene
3. n-propyl benzene
4. All

✅ Correct Answer: 4

Ozonolysis of benzene produces

1. Glycol
2. Glyoxal
3. Vicinal diol
4. Both b & c

✅ Correct Answer: 2

Which one of the following is benzal chloride?

1. C6H5 CH2C?
2. C6H5 CHC?2
3. C6H5 -CH = CHC?
4. None of the above

✅ Correct Answer: 2

What is the molecular formula of Benzenetriozonide?

1. C6H6O9
2. C6H5O8
3. C6H5O9
4. C6H6O6

✅ Correct Answer: 1

The hydrolysis of Benzenetrizonide will yield three moles of

1. Glyoxime
2. Benzaldehyde
3. Glycol
4. Glyoxal

✅ Correct Answer: 4

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