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Aniline is treated with NaNO(2) and HCl ...

Aniline is treated with `NaNO_(2)` and HCl at `O^(@)C`, the product formed is

A

Nitroaniline

B

Chloroaniline

C

Benzene diazonium salt

D

Amino phenol

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The correct Answer is:
c
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when an primay aromatic amine is treated with NaNO_(2)+HCl at 0^(0)-5^(0)C , a diazonium salt is formed and the reaction is called diazo reaction. In this reaction mineral acid must be added to prevent the coupling reaction of diazonium salt with excess of aryl amine. Diazonium salt is highly useful in the synthesis of number of coloured dyes. When 2, 4-dinitroaniline react with NaNO_(2)+HCI at 5^(0)C followed by reaction with anisole, a coloured compound is formed which can be given as

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SIA PUBLICATION-ORGANIC CHEMISTRY-II-MCQ
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  3. Nitrobenzene on reduction with zinc and NH(4)Cl gives

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  4. Which of the folowing reactions can produce aniline as main product?

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  7. Which one of the following is the molecular formula of a teritiary ami...

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  8. Consider the following reactions C(2)H(2)overset("Redhot iron tube")u...

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  9. Considerd the following reaction, C(6)H(5)NO(2)overset(Sn//HCI)to Xov...

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  10. What of the following is a secondary amine?

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  11. Which of the following reagents converts nitrobenzene into N-phenyl hy...

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  12. By which of the following reactions can one get N-methyl aniline from ...

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  13. Which one of the following is not a busc?

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  14. Aniline when heated with NaNO(2) and HCl at 0.5^(@)C produces

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  15. Oxidation of aniline with potassium dichromate and sulphuric acid give...

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  16. Which one of the following is a tertiary amine?

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  17. Aniline on treatment with bromine water gives a white precipitate of

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  18. When aniline is treated with CHCl(3) and KOH, the product is

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  19. C(6)H(5)NO(2)overset( Sn//HCl)toA Product 'A' is

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  20. Aniline is treated with NaNO(2) and HCl at O^(@)C, the product formed ...

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