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Organic Nitrogen Compounds - Two Marks Study Materials

12th Standard EM

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Chemistry

Time : 00:45:00 Hrs
Total Marks : 30
    15 x 2 = 30
  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. Nitrobenezenelectrolytic reduction in strongly acidic medium.
    iii. Oxidation of tert – butylamine with KMnO4
    iv. Oxidation of acetoneoxime 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. Identify compounds A,B and C in the following sequence of reactions.
    i) \({ C }_{ 6 }{ H }_{ 5 }NO_{ 2 }\overset { Fe/HCL }{ \longrightarrow } A\overset { HN{ O }_{ 2 } }{ \underset { 273K }{ \longrightarrow } } B\overset { { C }_{ 6 }{ H }_{ 5 }OH }{ \longrightarrow } C\)
    ii) \({ C }_{ 6 }{ H }_{ 5 }N_{ 2 }cl\overset { CuCN }{ \longrightarrow } A\overset { H_{ 2 }O/H^{ + } }{ \longrightarrow } B\overset { NH_3 }{ \longrightarrow } C\)

    iii) \({ C }{ H }_{ 3 }{ C }{ H }_{ 2 }I\overset { NaCN}{ \longrightarrow } A\overset {OH^-}{ \underset {Partial hydrolysis}{ \longrightarrow } } B\overset {NaOH+Br_2 }{ \longrightarrow } C\)
    iv) \({ C }{ H }_{ 3 }NH_{ 2 }\overset { CH_3 Br }{ \longrightarrow } A\overset { CH_{ 3 }COCl}{ \longrightarrow } B\overset { B_2H_6 }{ \longrightarrow } C\)
    v) \({ C }_{ 6 }{ H }_{ 5 }NH_{ 2 }\overset { (CH_{ 3 }CO)_{ 2 }O }{ \underset { Pyridine }{ \longrightarrow } } A\overset { HNO_{ 3 } }{ \underset { H_{ 2 }SO_{ 4 },288K }{ \longrightarrow } } B\overset { { H }_{ 2 }O/{ H }^{ + } }{ \longrightarrow C } \)
    vi) 

    vii) \({ C }{ H }_{ 3 }CN_{ 2 }NC\overset { HgO }{ \longrightarrow } A\overset { H_{ 2 }O }{ \longrightarrow } B\overset { i)\quad NaN{ O }_{ 2 }/HCL }{ \underset { ii){ \quad H }_{ 2 }O }{ \longrightarrow } } \)

  6. Write short notes on the following
    i. Hofmann’s bromide reaction
    ii. Ammonolysis
    iii. Gabriel phthalimide synthesis
    iv. Schotten – Baumann reaction
    v. Carbylamine reaction
    vi. Mustard oil reaction
    vii. Coupling reaction
    viii. Diazotisation
    ix. Gomberg reaction

  7. Nitrobenzene does not undergo Friedel Crafts reaction - Give reason.

  8. What are amines? How are they classified?

  9. What·happens when aniline is treated with bromine?

  10. Explain why amines are more basic than amides.

  11. \({ C }_{ 6 }{ H }_{ 5 }{ NH }_{ 2 }\xrightarrow [ 273k,HCl ]{ { HNO }_{ 2 } } A\xrightarrow [ { Cu }_{ 2 }({ CN })_{ 2 } ]{ KCN } B\underrightarrow { { H }_{ 3 }O } C\)
    Identify A, Band C.

  12. Identify the compounds A,B,C in the following reactions
    (i) \(CH_{ 2 }CO{ NH }_{ 2 }\xrightarrow [ NaOH ]{ { Br }_{ 2 } } A\underrightarrow { { HNO }_{ 2 } } B\xrightarrow [ { I }_{ 2 } ]{ RedP } C\)
    (ii) \({ C }_{ 2 }{ H }_{ 5 }Cl\underrightarrow { AgCN } A\underrightarrow { Sn/HCl } B\underrightarrow { { HNO }_{ 2 } } C\)

  13. Convert methyl amine (1° primary amine) to 2°, 3° amine and Quarternary ammonium salt.

  14. Write a note on Libermann's nitroso test.

  15. Can aniline be prepared by Gabriel phthalimide reaction? Justify your answer.

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