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12th Standard Chemistry Organic Nitrogen Compounds English Medium Free Online Test One Mark Questions 2020 - 2021

12th Standard

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Chemistry

Time : 00:20:00 Hrs
Total Marks : 20
    Answer all the questions
    20 x 1 = 20
  1. Which of the following reagent can be used to convert nitrobenzene to aniline

    (a)

    Sn / HCl

    (b)

    ZnHg / NaOH

    (c)

    LiAlH4

    (d)

    All of these

  2. Which one of the following will not undergo Hofmann bromamide reaction

    (a)

    CH3CONHCH3

    (b)

    CH3 CH2CONH2

    (c)

    CH3CONH2

    (d)

    C6H5CONH2

  3. Aniline + benzoylchloride \(\overset { NaOH }{ \longrightarrow } \)C6H5 - NH - COC6 H5 this reaction is known as

    (a)

    Friedel – crafts reaction

    (b)

    HVZ reaction

    (c)

    Schotten – Baumann reaction

    (d)

    none of these

  4. C6H5NO2 \(\overset { Fe/Hel }{ \longrightarrow } A\overset { { NaNO }_{ 2 }/HCl }{ \underset { 273K }{ \longrightarrow } } B\overset { { H }_{ 2 }O }{ \underset { 283 }{ \longrightarrow } } C\quad 'C'is\)

    (a)

    C6H5- OH

    (b)

    C6H5-CH2OH

    (c)

    C6H5- COH

    (d)

    C6H5NH2

  5. Which of the following amines does not undergo acetylation?

    (a)

    t – butylamine

    (b)

    ethylamine

    (c)

    diethylamine

    (d)

    triethylamine

  6. P Product ‘P’ in the above reaction is

    (a)

    (b)

    (c)

    (d)

  7. Identify X in the sequence give below

    (a)

    (b)

    (c)

    (d)


  8. The above structure represents

    (a)

    Vitamin B12

    (b)

    Vitamine B6

    (c)

    dopamine

    (d)

    Histamine

  9. Which among the following reactions will give a secondary amine?

    (a)

    \({ CH }_{ 3 }CO{ NH }_{ 2 }\underrightarrow { { Br }_{ 2 }/KOH } \)

    (b)

    \({ CH }_{ 3 }{ CONH }_{ 3 }\underrightarrow { { LIAlH }_{ 4 } } \)

    (c)

    \({ CH }_{ 3 }CN\xrightarrow [ Na/{ C }_{ 2 }{ H }_{ 5 }OH ]{ } \)

    (d)

    \({ CH }_{ 3 }NC\underrightarrow { { LiAlH }_{ 4 } } \)

  10. The gas leaked from storage tank of the union Carbide plant in Bhopal gas tragedy was

    (a)

    Phosgene

    (b)

    methyl isocyanide

    (c)

    methyl isocyanate

    (d)

    methyl isothiocyanide

  11.  Bromo ethane reacts with silver nitrite to give

    (a)

    C2H5NO2

    (b)

    C2H5-O-NO

    (c)

    C2H5Ag+NaBr

    (d)

    C2H5NC

  12. The compound that is most reactive towards electrophilic nitration is

    (a)

    Toluene

    (b)

    benzene

    (c)

    benzoic acid

    (d)

    nitrobenzene

  13. Which of the following compounds has the smell of bitter almonds?

    (a)

    aniline

    (b)

    nitro methane

    (c)

    benzene sulphonic acid

    (d)

    nitrobenzene

  14. The test for aniline is

    (a)

    Fehling's test

    (b)

    Ferric chloride test

    (c)

    Bromination test

    (d)

    Riemer Tiemann test

  15. The product obtained when nitrobenzene is treated with Zn/NaOH is

    (a)

    aniline

    (b)

    azoxybenzene

    (c)

    azobenzene

    (d)

    hydrazobenzene

  16. Amines have __________ odour.

    (a)

    carbolic

    (b)

    mustard oil

    (c)

    fishy

    (d)

    garlic

  17. The compound which gives an oily nitrosoamine on reaction with nitrous acid at low temperature is ____________

    (a)

    C2H5NH2

    (b)

    (CH3)2NH

    (c)

    (CH3)3N

    (d)

    (CH3)2CHNH2

  18. p-amino phenol is the product of reducing nitrobenzene in _________

    (a)

    acid medium

    (b)

    basic medium

    (c)

    electrolytic reduction

    (d)

    neutral medium

  19. The nitro group can be reduced to primary amino group by _________

    (a)

    Sn / conc. HCI

    (b)

    Zn dust

    (c)

    Zn / NH4 CI

    (d)

    Zn / NaOH

  20. The intermediate formed on electrolytic reduction of nitrobenzene in cone. H2SO4 is _______

    (a)

    C6H5NH-NHC6H5

    (b)

    C6H5-NHOH

    (c)

    C6H5-N=N-C6H5

    (d)

    All of these

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