12th Chemistry Important Questions Unit 13 ORGANIC NITROGEN COMPOUNDS

TN 12th Chemistry Important Questions Unit 13 ORGANIC NITROGEN COMPOUNDS. 12th Chemistry Important Questions Chapter 13. +2 Chemistry Important 2 Marks, 12th Chemistry Important 3 Marks, Chemistry Important 5 Marks Questions Based on reduced Syllabus 2021-2022. 12th Free Online Test (MCQs). HSC 12th Chemistry Revision Test Important Questions. 12th Tamil Full Guide.

12th Chemistry Important Questions Unit 13 ORGANIC NITROGEN COMPOUNDS

12th Chemistry All Units Important Questions

13. ORGANIC NITROGEN COMPOUNDS

• 1. Write down the possible isomers of the C₄H₉NO₂ give their IUPAC names
• 2. There are two isomers with the formula CH₃NO₂. How will you distinguish between them?
• 3. What happends when
  i. 2 – Nitropropane boiled with HCl
  ii. Nitrobenzene undergo electrolytic-reduction in strongly acidic medium.
  iii. Oxidation of tert – butylamine with KMnO₄
  iv. Oxidation of acetone oxime with trifluoroperoxy acetic acid.
• 4. How will you convert nitrobenzene into
  i. 1,3,5 -trinitrobenzene
  ii. o and p-nitrophenol
  iii. m – nitro aniline
  iv. azoxybenzene
  v. hydrozobenzene
  vi. N –phenylhydroxylamine
  vii. Aniline
• 5. Write short notes on thefollowing
  i. Hofmann‟sbromide reaction ii. Ammonolysis
  iii. Gabrielphthalimide synthesis iv. Schotten – Baumannreaction v.Carbylamine reaction vi. Mustard oil reaction
  viii. Diazotisation
• 6. How will you distinguish between primary secondary and tertiary alphatic amines.
• 7. Account for the following
  i. Aniline does not undergo Friedel – Crafts reaction
  ii. Diazonium salts of aromatic amines are more stable than those of aliphatic amines
  iii. pKb of aniline is more than that of methylamine
  iv. Gabriel phthalimide synthesis is preferred for synthesising primary amines.
  v. Ethylamine is soluble in water whereas aniline is not
  vi. Amines are more basic than amides
  vii. Although amino group is o – and p – directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of
  m –nitroaniline.
• 8. How will you prepare propan – 1- amine from i) butane nitrile ii) propanamide ii) 1-nitropropane
• 9. How will you convert diethylamineinto i) N, N–diethylacetamide ii) N –nitrosodiethylamine
• 10. A dibromo derivative (A) on treatment with KCN followed by acid hydrolysis and heating gives a monobasic acid (B) along with liberation of CO₂ . (B) on heating with liquid ammonia followed by treating with Br₂ /KOH gives (c) which on treating with NaNO₂ and HCl at low temperature followed by oxidation gives a monobasic acid (D) having molecular mass 74. Identify A to D.
• 11. On nitration of alkanes except methane, other alkanes (upto n – hexane) give a mixture of nitroalkanes – give the reason
• 12. Convert thefollowings
  a) Monochloro acetic acid ® Nitromethane
  b) Bromoethane ® Nitroethane
  c) n-butylamine ® 2-Methyl-2-nitropropane
  d) Acetone oxime ® Nitromethane
  e) Benzene ® Nitrobenzene
  f) Nitrobenzene ® p-dinitrobenzene
• 13. How will you prepare the following compounds from Nitromethane? a,Methylamine b,Methylhydroxylamine c, Ethanal d, Ethanoicacid
• 14. How will you prepare the following compounds from Nirobenzene? a, Aniline b, Hydroazobenzene c, p-aminobenzene
• 15. How will you prepare the following compounds fromAniline?
  a,Aniliniumchloride b,p-Nitroaniline c, Zwitter ion d, Benzene diazonium chloride
• 16. Convert the followings
• a) m-dinitrobenzene –> m – Nitroaniline
• b) Nitrobenzene –> m – Nitrobenzenesulphonic acid
• c) Methylcyanide –> Aminoethane
• d) Methylisocyanide –> Dimethylamine
• e) Acetamide –> Aminoethane
• f) Methylbromide –> Methylazide
• g) Aminoethane –> Ethylacetamide
• h) Ethylamine –> Ethanol
• i) Grignard reagent –> Methylcyanide
• Explain the Nitration reaction in Aniline?
• 17. Give the test for1⁰ Amine
• 18. Convert the following
  a) Nitrobenzene –> N-phenyl hydroxylamine
  b) Propanamide –> Propan-1-amine
  c) Aniline –> p-Nitro aniline
• 19. Give reasons for the following
  a) Aniline does not undergoes Friedel – craft‟s reaction.
  b) Ethylamine soluble in water but Aniline not soluble .
  c) Amines are more basic than Amides.
• 20. Mention the uses of Nitroalkanes.
• 21. How will you prepare Chloropicrin?
• 22. An organic compound (A) gives (B) on reduction .(B) react with CHCl3 & alcoholic KOH to give (C)
  . (C) undergoes reduction using catalyst to give N-methyl aniline. Find out A,B & C. Write the equations.
• 23. An organic compound (A) – C₇H₇NO on treatment with Br₂ and KOH gives an amine (B), which gives carbylamine test. (B) upon diazotization to give (C) . (C) on coupling with p-cresol to give compound (D). identify A, B, C and D with necessary reaction.
• 24. An Organinc Nitro Compound (A) on reduction with Sn/HCl gives compound (B). C₆H₇N, which on treatment with Benzoyl Chloride in the presence of pyridine to give compound (C). Compound „B‟ on treatment with CH₃Br to give compound (D) which further reacts with NaNO₂/HCl to give compound € with yellow oil liquid. Identify „A‟ to „E‟ and write the reactions.