Entry Test MCQ :: Aromatic Hydrocarbons
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11. |
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 |
Answer: Option C
Explanation:
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12. |
By which method the molecular mass of benzene was determined as 78.108? |
A. |
Specific gravity method |
B. |
Vapour density method |
C. |
X-ray diffraction method |
D. |
Distillation methos |
Answer: Option B
Explanation:
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13. |
How many moles of H2 are added up when benzene is heated with hydrogen in the presence of platinum? |
Answer: Option B
Explanation:
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14. |
Chlorination of toluene in the presence of sublight produces |
A. |
Benzyl chloride |
B. |
o - chlorotoluene |
C. |
p - chlorotoluene |
D. |
benzoic acid |
Answer: Option A
Explanation:
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15. |
The heat of hydrogenation of cyclohexene is |
A. |
?239 kJ mol-1 |
B. |
?208 kJ mol-1 |
C. |
?119.5 kJ/mol |
D. |
?119.5 kcal/mol |
Answer: Option C
Explanation:
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16. |
The resonance energy of benzene is |
A. |
150.5 kJ/mol |
B. |
250.5 kJ/mol |
C. |
150.5 Cal/mol |
D. |
250.5 Cal/mol |
Answer: Option A
Explanation:
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17. |
What catalyst is employed when benzene is prepared from acetylene at 70?C? |
A. |
Cr2O3 + A?2O3 + SiO2 |
B. |
Raney nickel |
C. |
Organo-nickel |
D. |
Ni 250 - 300?C |
Answer: Option C
Explanation:
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18. |
Mixture of catalysts Cr2O3 + A?2O3 + SiO2 at 500?C are used when benzene is prepared from |
A. |
acetylene |
B. |
N-hexane |
C. |
Benzene sulphonic acid |
D. |
Sodium benzoate |
Answer: Option B
Explanation:
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19. |
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 360?C & 150atm. |
D. |
Hydrolysis of benzene sulphonic acid with super heated steam. |
Answer: Option C
Explanation:
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20. |
Which is fused cyclic aromatic compound |
A. |
diphenyl amine |
B. |
diphenyl methane |
C. |
naphthalene |
D. |
biphenyl |
Answer: Option C
Explanation:
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