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Benzene can be obtained in the reaction...

Benzene can be obtained in the reaction

A

Ethene + 1, 3-butadiene

B

Trimerisation of ethyne

C

Reduction of PhCHO

D

All of these

Text Solution

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The correct Answer is:
B
Benzene can be obtained by polymerisation of acetylene
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ERRORLESS-HYDROCARBONS-NCERT BASED QUESTION (AROMATIC HYDROCARBON)
  1. Friedel-Crafts reaction using MeCI and anhydrous AICI(3) will take pla...

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  2. On heating a mixture of sodium benzoate and sodalime, the following is...

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  3. Benzene can be obtained in the reaction

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  4. Benzene reacts with CH(3)Cl in the presence of anyhydrous AlCl(3) to f...

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  5. Benzene is prepared in laboratory from which one of the following comp...

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  6. Electrophile in the case of chlorination of benzene in presence of FeC...

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  7. Benzne can be obtained by heating either benzoic acid with X or phenol...

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  8. Find the major product in the following reaction

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  9. Which among the following is very strong o-p-directing groups?

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  10. Which of the following compounds react slower than benzene in electrop...

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  11. Which of the following order is correct for the decreasing reactivity ...

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  12. Attacking or reactive or electrophilic species in nitration of benzene...

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  13. The attacking reagent in electrophilic sulphonation of benzene is

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  14. The compound that is most reactive towards electrophilic nitration...

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  15. Which of the following would be least reactive towards bromide

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  16. Acylation of benzene to produce aliphatic aromatic ketones is known as

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  17. (i)Chlorobenzene and (ii) benzene hexachloride are obtained from benze...

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  18. Which of the following group activates the benzene ring most towards e...

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  19. A compound 'A' when treated with HNO(3) (in presence of H(2)SO(4)) giv...

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  20. The strongest ortho/para and the strongest meta directing groups, resp...

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