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Fluorobenzene (C(6)H(5)F) can be synthes...

Fluorobenzene `(C_(6)H_(5)F)` can be synthesized in the laboratory ,

A

By heating phenol with HF and KF

B

From aniline by diazotisation followed by heating the diazonium salt with `HBF_(4)`

C

By direct fluorination of benzene with `F_(2)` gas

D

By reacting bromo benzene with `NaF` soltuion

Text Solution

Verified by Experts

The correct Answer is:
B
Aniline on diazotisation gives benzene diazonium chloride. This on treatment with `HBF_(4)` gives chlorobenzene
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NARAYNA-HYDROCARBONS -EXERCISE - 2 (H.W) (PROPERTIES OF ALKENES)
  1. 1-butyne on reaction with hot alkaline KMnO(4) gives:

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  2. Order of acidity of H(2)O, NH(3) and acetylene is :

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  3. Which of the following is expected to aromatic

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  4. Which of the following carbocation is expected to be least stable

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  5. Which of the following carbocations is expected to be most stable ?

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  6. Which of the following structure will not have 4pi electrons

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  7. CaC(2)overset(H(2)O)toAoverset("Red tube hot")toBunderset(CH(3)Cl)over...

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  8. C(2)H(2)overset("Red hot tube")toAoverset("fuming "H(2)SO(4))toB then ...

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  9. Aoverset("soda lime")toC(6)H(6)overset(Cl(2),hv)toB, In this reaction ...

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  10. A & B respectively are

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  11. The descending order of reactivity of C(2)H(6), C(2)H(4), C(2)H(2) and...

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  12. A new carbon-carbon bond is formed in

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  13. X overset("Dil. "H(2)SO(4))underset("Boil")rarr Yoverset("Zndust")unde...

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  14. In which of the following reactions, aromatic character is retained?

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  15. Number of sigmasp^(2)-sp^(2) bonds present in a molecule of X in the p...

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  16. What is 'X' in the following reaction ? C(6)H(5)-C-=C-H overset(Hg^(...

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  17. Fluorobenzene (C(6)H(5)F) can be synthesized in the laboratory ,

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  18. The electrophile in Acetylation of Benzene is

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  19. Four structures are given in option (1) to (4). Examine them and selec...

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  20. Which of the following is the correct IUPAC Name of the compound

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