Acetophenone is a
1.Ether
2.Ketone
3.Aldehyde
4.Ester
Benzene does not undergo
1.Substitution reaction
2.Addition reaction
3.Polymerization reactions
4.Oxidation reactions
Benzene is heated in air with V2O5 at 450?C it undergoes
1.Substitution reaction
2.Addition reaction
3.Elimination reaction
4.Oxidation reaction
Chlorination of toluene in the presence of sublight produces
1.Benzyl chloride
2.o - chlorotoluene
3.p - chlorotoluene
4.benzoic acid
During sulphonation of benzene H2SO4 generates the electrophile
1.HSO4-
2.SO2
3.SO3
4.H+
In Friedel Craft Alkylation A?C?3 is used to generate
1.Strong nucleophile
2.Weak nucleophile
3.Strong electrophile
4.Weak electrophile
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
Nitronium ion is
1.NO3
2.NO
3.NO2-
4.NO2+
Ozonolysis of benzene produces
1.Glycol
2.Glyoxal
3.Vicinal diol
4.Both b & c
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
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
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
The hydrolysis of Benzenetrizonide will yield three moles of
1.Glyoxime
2.Benzaldehyde
3.Glycol
4.Glyoxal
The preparation of benzene from acetylene can also be said as
1.Oxidation
2.Polymerization
3.Dehydration
4.Condensation
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
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
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
What is the molecular formula of Benzenetriozonide?
1.C6H6O9
2.C6H5O8
3.C6H5O9
4.C6H6O6
Which compound form benzoic acid on oxidation with acidified KMnO4 or K2Cr2O7
1.Toluene
2.Ethyl benzene
3.n-propyl benzene
4.All
Which compound will readily undergo sulphonation?
1.Benzene
2.Nitro benzene
3.Toluene
4.Chlorobenzene
Which is fused cyclic aromatic compound
1.diphenyl amine
2.diphenyl methane
3.naphthalene
4.biphenyl
Which one of the following is benzal chloride?
1.C6H5 CH2C?
2.C6H5 CHC?2
3.C6H5 -CH = CHC?
4.None of the above
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.
Which one of the following radical is called benzyl radical?
1.C6H5?
2.C6H5?C
3.C6H5?CH-
4.C6H5?CH2-
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