Which one of the following alkali metals forms only normal oxide when it reacts with O2 ?
A. Lithium
B. Sodium
C. Potassium
D. Rubidium
Submitted by :- Jamil Ahmed
CHEMISTRY
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Replacement of hydrogen of benzene by alkyl group in the presence of alkyl halide & aluminum chloride is known as__________________?
A. Dows process
B. Friedel & Craft acylation
C. Friedel & Craft alkylation
D. Clemmenson reduction
Submitted by :- Jamil Ahmed
During sulphonation of benzene H2SO4 generates the electrophile _________________?
A. HSO4-
B. SO2
C. SO3
D. H+
Submitted by :- Jamil Ahmed
Reacting bromine with benzene in the presence of sunlight will result in_______________?
A. The rupturing of benzene ring
B. Substitution reaction
C. Addition reaction
D. No-reaction
Submitted by :- Jamil Ahmed
Which one of the following methods will not give benzene ?
A. Heating sod. Salt of Benzoic acid with soda lime
B. Distilling phenol with Zn dust
C. Chlorobenzene with NaOH at 36°C & 15atm.
D. Hydrolysis of benzene sulphonic acid with super heated steam
Submitted by :- Jamil Ahmed
How many moles of H2 are added up when benzene is heated with hydrogen in the presence of platinum ?
Michael Faraday discovered benzene in the gas which was produced by destructive distillation of vegetable oil that is done in________________?
A. The presence of Oxygen
B. The presence of Hydrogen
C. The absence of Oxygen
D. The presence of excessive Oxygen
Submitted by :- Jamil Ahmed
Which is fused cyclic aromatic compound _____________________?
A. diphenyl amine
B. diphenyl methane
C. naphthalene
D. biphenyl
Submitted by :- Jamil Ahmed
Mixture of catalysts Cr2O3 + A?2O3 + SiO2 at 5?C are used when benzene is prepared from_______________?
A. acetylene
B. N-hexane
C. Benzene sulphonic acid
D. Sodium benzoate
Submitted by :- Jamil Ahmed
Chlorination of toluene in the presence of sunlight produces_________________?
A. Benzyl chloride
B. o – chlorotoluene
C. p – chlorotoluene
D. benzoic acid
Submitted by :- Jamil Ahmed