Amines F324

F324 These are exam questions on Amines.

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1. Which is a suitable reagent which will convert -OH group in E110 into an -O– group?

  • KaOH or Ka or O–
  • NaOH or Na or OH–
  • KaO or Ka or H–
  • NaO or N or O–
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2. Sodium hydroxide was added, the phenylammonium chloride was converted to phenylamine, write an equation for this reaction?

  • C6H4NH3+Cl– + NaOH ---> C6H5NH2 + H2O +NaCl
  • C6H4NH3+Cl– + NaOH ----> C6H5NH2 + H2O +Na
  • C6H4NH3+Cl– + NaOH ----> C6H5NH2 + H2O

3. What are the reagents and conditions required in stage 1 of making an azo dye?

  • aromatic amine, H2SO4, <10°C
  • aromatic amine, NaNO3, H2SO4, <10°C
  • aromatic amine, NaNO3, SO4, >10°C
  • aromatic amine, NaNO3, H2, <10°C

4. What is formed after stage 1 of preparation of azo dye?

  • aromatic phenol
  • diazonium salt
  • aromatic amine
  • diazo

5. 1,4-diaminobenzene can be manufactured from 1,4-dinitrobenzene. What type of reaction is this?

  • Reforming
  • Reduction
  • Oxidation
  • Halogenation
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Comments

Najib K Uddin

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the last one's wrong

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