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question_answer1) What are amines?
question_answer2) Which ammo group is present in biologically active compounds adrenaline and ephedrine?
question_answer3) Name the biologically active compound used to increase blood pressure which contains secondary amino group.
question_answer4) Name an amino compound used as an an aesthetic in dentistry
question_answer5) Name the antihistamine drug which contains tertiary amino group.
question_answer6) Which amino compound is used as surfactants?
question_answer7) What is the hybridization of orbitals of nitrogen in a mine?
question_answer8) What is ammonolysis?
question_answer9) What is the order of reactivity of halides with ammonia?
question_answer10) What is the order of boiling points of isomeric amines?
question_answer11) Boiling points of amines are higher than the alkanes of same molecular mass. Why?
question_answer12) Boiling points of amines are less than the alcohols of similar molecular mass. Why?
question_answer13) Amines behave as nucleophiles. Why?
question_answer14) What is the order of basicity of p, s, t ethyl substituted amines?
question_answer15) What is the order of basicity of methyl substituted p, s and t-amines?
question_answer16) What happens when amine reacts with carboxylic acid?
question_answer17) What is acylation of amine?
question_answer18) What is benzoylation of amine?
question_answer19) Which reaction is used in the estimation of amino acids and proteins?
question_answer20) What is Hinsberg reagent?
question_answer21) For an amine write the expression fo1 to indicate its base strength.
question_answer22) Alkyl amines are .......... base than ammonia.
question_answer23) Mention the chief use of quaternary ammonium salts derived from long chain amines.
question_answer24) Mention the medicinal use of Novocain.
question_answer25) What is aniline?
question_answer26) How is nitrobenzene converted to aniline?
question_answer27) Which reaction is used for the test of p-aromatic amine?
question_answer28) What happens when aniline reacts with bromine water?
question_answer29) What are alkaloids? Give examples.
question_answer30) Complete the following reaction :
question_answer31) Predict the product :
question_answer32) What are diazonium salts?
question_answer33) What is diazotisation?
question_answer34) Benzene diazonium chloride is soluble in water. Why?
question_answer35) Complete the following reaction :
question_answer36) Complete the reaction :
question_answer37) Give an example of coupling reaction.
question_answer38) How are amines classified?
question_answer39) What are simple and mixed amines?
question_answer40) How are amines prepared from nitro compounds?
question_answer41) Iron scrap and hydrochloric acid is preferred for reduction of nitro compound to amine. Why?
question_answer42) What are the reducing agents that can be used for reduction of nitro compound to amine?
question_answer43) How is aliphatic amine prepared from alkyi halide?
question_answer44) How are amines prepared from nitriles?
question_answer45) How are amines prepared from amides?
question_answer46) Explain Gabriel phthalimide synthesis.
question_answer47) Explain Hermann bromamide degradation reaction.
question_answer48) Lower aliphatic amines are soluble in water. Why?
question_answer49) Amines are less soluble in water than alcohols. Why?
question_answer50) Amines are basic. Why?
question_answer51) Alkyl amines are more basic than Why?
question_answer52) What are the factors that affect basicity of amines?
question_answer53) Explain carbylamine reaction.
question_answer54) Acylation of amines with acid chloride is carried out in presence of stronger base. Why?
question_answer55) Why do primary amines have higher boiling points than tertiary amines?
question_answer56) An organic compound A having molecular formula on treatment with gave an oily yellow substance. Identify 'A'.
question_answer57) What is Mendius reduction? Give equation.
question_answer58) Give a chemical test to distinguish between a primary and a secondary amine.
question_answer59) Account for the following : (i) Ammonolysis of alkyl halide does not give a corresponding amine in pure state. (ii)dissolves in aqueous methyl amine solution.
question_answer60) Explain the observed order in aqueous solution.
question_answer61) Describe a test to distinguish between : (i) ethyl amine and aniline (ii)and (iii)and
question_answer62) Describe the following processes giving a suitable example: (i) Acetylation (ii) Carbylamine reaction (iii) Hinsberg test.
question_answer63) Give a chemical test to distinguish between and.
question_answer64) Arylamines are weaker bases than alkyl amines. Why?
question_answer65) How nitrous acid reacts with p, s and famines?
question_answer66) How p, s and t-amines react with benzene sulphonyl chloride?
question_answer67) How are p, s and famines distinguished?
question_answer68) How are p, s and t-amines separated from a mixture of amines?
question_answer69) Complete the following equations : (i) (ii) (iii)
question_answer70) Complete the following reactions : (i) (ii)
question_answer71) What is Gabriel phthalimide synthesis? What is its use? Give equation only.
question_answer72) How is ethyl amine prepared from acetonitrite? Compare its basic strength with
question_answer73) How are the following reactions carried out? Write the equations and conditions. (i) Acetic acid to ethylamine (ii) Bromocyclohexane to cyclohexanamine. (iii) Methylamine to Dimethylamine.
question_answer74) Which amine in each of the following pairs is a stronger base? Give reason. (i)and (ii)and
question_answer75) Account for the following : (i) Tertiary amines do not undergo acylation reaction, (ii) The basic strength of aliphatic amines in solution is in the order sec > tert > prim. (iii) Amines are more basic than comparable alcohols.
question_answer76) Why are secondary amines more basic than primary amines?
question_answer77) Describe the following with one example each. (i) Hermann Bromamide degradation (ii) Preparation of azo compound.
question_answer78) How is aniline prepared commercially? Describe the carbylamines test for primary amine.
question_answer79) How is benzonitrile converted to benzyl amine?
question_answer80) How is benzamide converted to aniline?
question_answer81) How is benzamide converted to benzyl amine?
question_answer82) Aniline gets coloured on storage. Why?
question_answer83) What is the effect of substituents on basicity of amines?
question_answer84) Aromatic amines are weaker base than ammonia. Why?
question_answer85) How will you distinguish between aliphatic and aromatic primary amine?
question_answer86) Aniline is o, p-directing. Why?
question_answer87) Aniline is more reactive than benzene towards electrophonic substitution reaction. Explain.
question_answer88) Aniline reacts with water to give 2,4,6-tribromoaniline Why?
question_answer89) How can you prepare monobromo aniline from aniline?
question_answer90) Acetanilide is less reactive than aniline towards electrophilic substitution reaction. Why?
question_answer91) What happens when aniline is treated with a mixture of cone. and cone. at 298 K?
question_answer92) How is p-nitro aniline prepared from aniline?
question_answer93) What product is obtained when aniline reacts with concentrated sulphuric acid?
question_answer94) Aniline does not undergo Friedel-Craft's reaction. Why?
question_answer95) Mention two important uses of sulphanilic acid?
question_answer96) Convert aniline to : (i) Phenyl isocyanide (ii) Benzonitrile (iii) Sulphanilic acid (iv) Fluoro benzene.
question_answer97) How is acetanilide prepared from aniline?
question_answer98) How is aniline obtained from nitrobenzene?
question_answer99) Identify A and B in the following sequence
question_answer100) Give the chemical formula and name of the product obtained when chloroform is heated with aniline in presence of ale KOH.
question_answer101) Give a chemical test to distinguish between and
question_answer102) How is phenol obtained from aniline?
question_answer103) How is the basic strength of aromatic amines affected by the presence of an electron releasing group on the benzene ring?
question_answer104) Complete the following reactions : (i) (ii)
question_answer105) Give a chemical test to distinguish between aniline and N-methyl aniline.
question_answer106) Write the chemical equations for the following conversions : (i) Aniline to N-phenyl ethanamide. (ii) Aniline to Benzonitrite (iii) Aniline to p-nitro aniline.
question_answer107) Aniline is weaker base than methyl amine. Explain.
question_answer108) Before reacting aniline with for nitration it is converted to acetanilide. Why is this done and how is nitro aniline obtained subsequently?
question_answer109) Identify the substance A and B
question_answer110) How are following conversions carried out (give equations only) (i) Aniline to chlorobenzene (ii) Nitrobenzene to phenol (iii) Aniline to benzoic acid (iv) Aniline to benzene.
question_answer111) Alkyl diazonium salts are highly unstable. Why?
question_answer112) Aryl diazonium salts are stable for a short time in solution at low temperature. Why?
question_answer113) How is benzene diazonium chloride prepared?
question_answer114) Write notes on Sandmeyer reaction.
question_answer115) Explain Gatterman reaction.
question_answer116) What is coupling reaction?
question_answer117) How will you prepare the following compounds from benzene diazonium chloride (i) Chloro benzene (ii) Bromo benzene (iii) lodo benzene (iv) Fluoro benzene (v) Benzonitrile (vi) Nitro benzene (vii) Benzene (viii) Phenol (ix) A yellow dye (x) An orange dye.
question_answer118) Give one example for each of the following : (i) Coupling reaction (ii) Sandmeyer's reaction.
question_answer119) Give appropriate reason for the following. The diazonium ion acts as an electrophilie.
question_answer120) Acetanilide is less reactive than aniline towards electrophilie substitution reaction Why?
question_answer121) Nitration of aniline gives m-nitro aniline in good yield although group is o,p-directing. Explain.
question_answer122) Acetamide is less basic than ethanamine.
question_answer123) In gaseous phase basicity order is whereas in aqueous solution Why?
question_answer124) In aqueous solution basic strength is in order of whereas for methyl substituted amines it is Explain.
question_answer125) Why is aniline converted into acetanilide before nitration?
question_answer126) How will you convert benzene to w-bromoaniline?
question_answer127) Give the common and IUPAC names of the following compounds : (a) (b) \[{{O}_{2}}NC{{H}_{2}}C{{H}_{2}}OH\] (c) \[C{{H}_{3}}CH(N{{O}_{2}})C{{H}_{2}}C{{H}_{3}}\]
question_answer128) Write the structure of the following compounds: (a) TNT (b) Picric acid (c) p-Nitrotoluene (d) Azoxybenzene (e) Benzene diazonium chloride (f) Sulphanilic acid.
question_answer129) Explain what happens when aniline reacts with a mixture of conc. sulphuric acid and conc. nitric acid.
question_answer130) Why are the following names incorrect? (a) Methylaniline (b) Propanediamine
question_answer131) What for the abbreviation PABA stand?
question_answer132) How will you prepare a pure sample of primary amine having one more carbon than the alkyl halide used?
question_answer133) Why is \[{{C}_{6}}{{H}_{5}}{{N}^{+}}\,{{(C{{H}_{3}})}_{3}}O{{H}^{-}}\] a stronger base than \[N{{H}_{4}}OH\]?
question_answer134) Which is more basic, an aqueous solution of \[{{(C{{H}_{3}})}_{3}}N\] or tetramethyl ammonium hydroxide solution of the same concentration?
question_answer135) Prepare n-butylamine by Gabriel's synthesis.
question_answer136) In which of the following, the nitrogen atom is the most nucleophilic in nature? Justify your answer. (a) (b) (c) (d)
question_answer137) Convert acetic acid to dimethylamine.
question_answer138) Boiling point of 4-Methylpiperidine is higher than that of N-Methylpiperidine. Explain.
question_answer139) In the following reaction sequence, predict the products formed:
question_answer140) How can a carboxylic acid be converted to an amine having one carbon atom less than the carboxylic acid used?
question_answer141) Explain the observed \[{{K}_{b}}\] order: \[E{{t}_{2}}NH>E{{t}_{3}}N>EtN{{H}_{2}}\] in aqueous solution.
question_answer142) How can you find out whether a given amine is a primary amine? Write the chemical reaction involved in the test that you perform.
question_answer143) How do aromatic and aliphatic tertiary amines react with nitrous acid?
question_answer144) How will you prepare ethylamine from acetaldehyde?
question_answer145) How can you convert p-toluidine to 2-bromo-4-methylaniline?
question_answer146) How can you convert aniline to iodobenzene?
question_answer147) Why is silver chloride soluble in aqueous solution of methylamine?
question_answer148) Primary amines can be alkylated to form secondary amines but tertiary amines and quaternary ammonium salts are also obtained as the side products. Can you suggest a way to convert primary amine to secondary amine only?
question_answer149) How will you purify aniline containing non-basic impurities?
question_answer150) How will you prepare methyl orange from sulphanilic acid?
question_answer151) Tert. butylamine cannot be prepared by the action of ammonia on tertiary butylbromide. Explain.
question_answer152) Aniline cannot be prepared by the ammonolysis of chlorobenzene under normal conditions. Discuss.
question_answer153) Can we prepare aniline by Gabriel-phthalimide reaction?
question_answer154) \[{{(C{{H}_{3}})}_{3}}N\]boils at 276 K while \[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}N{{H}_{2}}\] boils at 322 K although both are isomeric in nature. Justify.
question_answer155) It is difficult to prepare pure amine by the ammonolysis of alkyl halides. Explain.
question_answer156) Aniline is a weaker base than cyclohexylamine. Assign reason.
question_answer157) Explain how does the presence or absence of hydrogen on N atom of amines affect the mode of their reaction with nitrous acid.
question_answer158) Why does aniline even under mild conditions give 2, 4, 6 tribromoaniline instantaneously when brominated with aqueous solution of bromine?
question_answer159) Dimethylamine is a stronger base than trimethylamine. Explain.
question_answer160) Dimethyl is a stronger base than methyl amine but trimethyl is a weaker base than both in protic solvent. Explain.
question_answer161) Write the increasing order of \[p{{K}_{b}}\] values : \[{{C}_{2}}{{H}_{5}}N{{H}_{2}},\,{{C}_{6}}{{H}_{5}}\,C{{H}_{2}}N{{H}_{2}},\,\,{{({{C}_{2}}{{H}_{5}})}_{2}}NH\]and\[{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]
question_answer162) Compare the basicities of the following amines and justify the order : \[\underset{\begin{smallmatrix} \\ \text{(I)} \end{smallmatrix}}{\mathop{C{{H}_{2}}=CHC{{H}_{2}}N{{H}_{2}}}}\,\] \[\underset{(II)}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}N{{H}_{2}}}}\,\] \[\underset{(III)}{\mathop{CH\equiv CC{{H}_{2}}N{{H}_{2}}}}\,\]
question_answer163) How is classification of amines different from that of alcohols?
question_answer164) Can we prepare aniline by Gabriel phthalimide reaction? Or Aromatic primary amines cannot be prepared by Gabrial phthalimide reaction.
question_answer165) Suggest chemical reactions for the following conversions : (i) Cyclohexanol\[\xrightarrow{\,}\]Cyclohexylamine (ii) 1-Hexanentrile \[\xrightarrow{\,}\] 1-Aminopentane
question_answer166) Although trimethylamine and n-propylamine have the same molecular weight, the former boils at a lower temperature (276 K) than the latter (322 K). Explain.
question_answer167) Amines are more basic than comparable alcohols.
question_answer168) The presence of a base is needed in the ammonolysis of alkyl halides. Explain
question_answer169) Predict, giving reasons, the order of basicity of the following compounds in (i) gaseous phase and (ii) in aqueous solution. \[{{(C{{H}_{3}})}_{3}}N,\,\,{{(C{{H}_{3}})}_{2}}NH,\,\,C{{H}_{3}}N{{H}_{2}},\,N{{H}_{3}}\]
question_answer170) How will you distinguish between \[{{(C{{H}_{3}})}_{2}}NH\]and \[{{(C{{H}_{3}})}_{3}}N\]?
question_answer171) (i) Arrange the following in an increasing order of basic strength in water \[{{C}_{6}}{{H}_{5}}N{{H}_{2}},\,{{({{C}_{2}}{{H}_{5}})}_{2}}NH,\]\[{{({{C}_{2}}{{H}_{5}})}_{3}}N\]\[and\text{ }N{{H}_{3}}\] (ii) Arrange the following in an increasing order of basic strength in gas phase \[{{C}_{2}}{{H}_{5}}N{{H}_{2}},\,{{({{C}_{2}}{{H}_{5}})}_{2}}NH,\]\[{{({{C}_{2}}{{H}_{5}})}_{3}}N\]\[\text{and}\,\,C{{H}_{3}}N{{H}_{2}}.\]
question_answer172) Why is it necessary to add excess of mineral acid to diazotisation of amines?
question_answer173) Give increasing order towards electrophilic substitution of the following compounds,
question_answer174) Identify A and B in each of the following processes : (i) \[C{{H}_{3}}C{{H}_{2}}Cl\xrightarrow[{}]{\text{NaCN}}\,A\,\xrightarrow[\text{Ni/}{{\text{H}}_{\text{2}}}]{\text{reduction}}B\] (ii) \[{{C}_{6}}{{H}_{5}}N{{H}_{2}}\xrightarrow{NaN{{O}_{2}}/HCl}\,A\xrightarrow[O{{H}^{-}}]{{{C}_{6}}{{H}_{5}}\,N{{H}_{2}}}\,B\].
question_answer175) Rearrange the following in an increasing order of their basic strengths : \[{{C}_{6}}{{H}_{5}}N{{H}_{2}},\,{{C}_{6}}{{H}_{5}}N{{(C{{H}_{3}})}_{2}},\,{{({{C}_{6}}{{H}_{5}})}_{2}}NH\]and \[C{{H}_{3}}N{{H}_{2}}\].
question_answer176) Describe a chemical test to distinguish between N-methylpropan-2-amine and N-ethyl-N-methylethanamine.
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