March 08, 2012

Organic Nitrogen Compounds One Mark Questions

1. Aniline differs from ethylamine in its reaction with
a) CH3I     b) CHCl3 and Caustic KOH c) HNO2                     d) CH3COCl
2. Aniline reacts with benzoyl chloride in the presence of sodium hydroxide and gives benzanilide. This reaction is known as
a) Gattermann reaction                             b) Sandmeyer's reaction
c) Schotten-Baumann reaction                  d) Gomberg-Bachmann reaction.
                    Cu2Cl2 / HCl
3. C6H5N2Cl      X; the compound X is
a) C6H5NH2        b) C6H5NHNH2        c) C6H5-C6H5           d) C6H5Cl.
                 NaNO2 / HCl
4. C6H5NH2       X. X is
                               273 K
a) C6H5Cl             b) C6H5NHOH          c) C6H5N2Cl              d) C6H5OH.
5. CCl3NO2 is used as / Use of chloropicrin (CCl3NO2) is as
a) explosive           b) dye                          c) anaesthetic              d) sterilizing agent. /
a) soil sterilizing agent b) organic synthesis c) good solvent        d) antioxidant.
6. Conversion of benzene diazonium chloride to chlorobenzene is called
a) Sandmeyer's reaction                            b) Stephan's reaction
c) Gomberg reaction                                 d) Schotten-Baumann reaction.
7. Electrophile used in the nitration of benzene is
a) hydronium ion   b) sulphonic acid         c) nitronium ion           d) bromide ion.
8. In nitroalkanes - NO2 group is converted to - NH2 group by the reaction with / The - NO2 group in nitro-alkane is converted into - NH2 group by the reagent / The nitro group can be reduced to primary amino group by
a) Zn / NH4Cl       b) Zn dust       c) Sn / HCl (Sn / conc. HCl)   d) Zn / NaOH.
a) o-dinitro benzene                                  b) 1,3,5-trinitro benzene
c) p-dinitrobenzene                                   d) m-dinitrobenzene.
10. Nitro-acinitro tautomerism is exhibited by
a) nitromethane     b) nitrobenzene           c) chloropicrin             d) o-toluidine.
11. Nitromethane condenses with acetaldehyde to give
a) nitropropane                                          b) 1-nitro-2-propanol
c) 2-nitro-1-propanol                                 d) 3-nitropropanol.
12. Organic compound that does not undergo diazotisation is
a) m-toluidine        b) aniline                     c) p-aminophenol        d) benzylamine.
13. Oxidation of aniline with acidified K2Cr2O7 gives
a) p-benzoquinone b) benzoic acid           c) benzaldehyde          d) benzyl alcohol
14. Primary amine acts as
a) Electrophile       b) Lewis base              c) Lewis acid               d) Free radical
15. The basic character of amines is due to
a) tetrahedral structure                              b) presence of nitrogen atom
c) lone pair of electrons on nitrogen atom d) high electronegativity of nitrogen.
16. The basic strength of amine is in the order of
a) NH3 > CH3NH2 > (CH3)2NH            b) (CH3)2NH > CH3NH2 > NH3
c) CH3NH2 > (CH3)2NH > NH3            d) NH3 > (CH3)2NH > CH3NH2.
17. The compound most reactive towards electrophillic nitration is
a) Methyl benzene / Toluene b) Benzene c) Benzoic acid            d) Nitrobenzene.
18. The compound that does not show tautomerism is
a) nitrobenzene      b) nitromethane           c) nitroethane              d) 2-nitropropane.
19. The intermediate formed in the nitration of benzene is
a) Arenium ion      b) Carbanion               c) Oxonium ion           d) Nitrite ion.
20. Nitrobenzene on electrolytic reduction in conc. Sulphuric acid, the intermediate formed is /
       The intermediate formed on electrolytic reduction of nitrobenzene in conc. H2SO4 is
a) C6H5NH-NHC6H5                              b) C6H5-NHOH
c) C6H5-N=N-C6H5                               d) C6H5.HSO4 / all of these.
21. The isomerism exhibited by CH3-CH2-NO2 and CH3-CH2-O -N = O is
a) position                         b) chain                       c) functional                d) tautomerism.
22. The isomerism exhibited by CH3-N=O and CH2=N-OH is
                                                          O                       O
       a) position            b) chain                       c) functional                d) tautomerism.
23. The nitrogen compound used in the preparation of sulpha drugs is
a) methylamine      b) nitromethane           c) aminobenzene / aniline d) nitrobenzene.
24. The organic compound that undergoes carbylamine reaction is
a) (C2H5)2NH      b) C2H5NH2              c) (C2H5)3N               d) (C2H5)4N+I-
25. The product obtained when Nitro benzene is treated with Zn / NaOH is
a) aniline                                                    b) azoxy benzene
c) azo benzene                                           d) hydrazo benzene / N, N' - diphenyl hydrazine
26. The reaction between benzene diazonium chloride and benzene in the presence of NaOH is
a) Perkin's reaction                                    b) Gattermann's reaction
c) Sandmeyer reaction                               d) Gomberg-Bachmann reaction
27. The tertiary nitro compound is
a)   2-nitropropane                                     b) 1-nitropropane
c) 1-nitro-2, 2-dimethyl propane               d) 2-nitro-2-methyl propane.
28. When aqueous solution of benzene diazonium chloride is boiled, the product formed is
a) Benzyl alcohol b) Benzene + N2         c) Phenol         d) Phenyl hydroxyl amine.
29. When nitromethane is reduced with Zn dust + NH4Cl we get
a) CH3NH2          b) C2H5NH2              c) CH3NHOH            d) C2H5COOH.
30. Which among the following is a tertiary amine?
a) (CH3)3-C-NH2                                     b) CH3 - CH (CH3) - NH - CH3
c) (CH3)2-N-C2H5                                   d) CH3-CH2- C (CH3) (C2H5) NH2
31. Which of the following compounds has the smell of bitter almonds?
a)   Aniline            b) Nitromethane          c) Benzene sulphonic acid d) Nitrobenzene
32. Which of the following nitro-compounds behave as an acid in the presence of strong alkali?
a) Primary              b) Secondary               c) Tertiary                    d) both (a) and (b).
33. Which of the following will not undergo diazotisation?
a) m-toluidine        b) aniline                     c) p-amino phenol       d) benzyl amine.
34. Which of the following will not undergo Hoffman’s bromamide reaction?
a) ethanamide        b) propanamide           c) methanamide             d) phenyl methanamide.
35. Which one of the following is a secondary amine?
a) Aniline b) Diphenyl amine       c) Secondary butyl amine       d) tertiary butyl amine.
36.Which of the following will not undergo diazotisation? / The compound which does not undergo diazotization reaction is
a) m-toluidine          b) aniline                      c) p-amino phenol           d) benzyl amine
37. Which one of the following is the most basic?
a) ammonia             b) methylamine              c) diethylamine                 d) aniline

38. Oil of mirbane is 
a) nitrobenzene         b) benzaldehyde            c) methyl salicylate            d) aspirin. 

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