InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A positive carbylamine test is given by:A. N.N-dimethylanilineB. 2,4-dimethylanilineC. N-methyl-O-methylanilineD. P-mehtylbenzyline |
| Answer» Correct Answer - D | |
| 2. |
The reation of `RCONH_(2)` with a mixture of `Br_(2)` and aqueous `KOH` gives `RNH_(2)` as the main product The intermediate (s) involved in this reation is (are) .A. `R-CO-NHBr`B. `R-NHBr`C. `R-N=C=O`D. `R-CO.NBr_(2)` |
| Answer» Correct Answer - A::C | |
| 3. |
`RCONH_2` is converted into `RNH_2` by means of Hofmann bromamide degradation. In this `RCONHBr` is formed form which this reaction has derived its name. Electron-donating group at phenyl activities the reaction. Hofmann degradation reaction is an intramolecular reaction. Which is the rate-determining step in Hofmann bromamide degradation ?A. Formation of (i)B. Formation of (ii)C. Formation of (iii)D. Formation of (iv) |
| Answer» Correct Answer - D | |
| 4. |
`RCONH_2` is converted into `RNH_2` by means of Hofmann bromamide degradation. In this `RCONHBr` is formed form which this reaction has derived its name. Electron-donating group at phenyl activities the reaction. Hofmann degradation reaction is an intramolecular reaction. Hoe can the conversation of `(i) to (ii)` be brought about ?A. KBrB. `KBr+CH_(3)ONa`C. KBr+KOHD. `Br_(2)+KOH` |
| Answer» Correct Answer - D | |
| 5. |
Which of the following amine does not react with Hinsberg reagent-A. Neopentyl amineB. Isopropyl AmineC. Triethyl AmineD. Ethyl methyl amine |
| Answer» Correct Answer - C | |
| 6. |
`Ph-overset(O)overset(||)(C)-NH_(2)+Ph-CH_(2)-overset(O)overset(||)(C)- overset(15)NH_(2)overset(Θ)overset(OH + Br_(2))(rarr)A+B` Product A and B are:A. `Ph-NH_(2)`B. `Ph-CH_(2)- overset(15)NH_(2)`C. `Ph-CH_(2)-NH_(2)`D. `Ph- overset(15)NH_(2)` |
| Answer» Correct Answer - A::B | |
| 7. |
Which of the following products will not form by following reaction? A. B. C. D. |
| Answer» Correct Answer - A::C::D | |
| 8. |
When a solution of aliphatic aminne is treated with `NANO_(2)`, the effervescence occurs due to the formation ofA. `CO_(2)`B. `NO_(2)`C. `N_(2)`D. `H_(2)` |
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Answer» Correct Answer - C `R-ddotNH_(2)overset(HNO_(2))rarrR-OH+N_(2)+H_(2)O` |
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| 9. |
Which of the following reaction represents major products?A. B. C. D. |
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Answer» Correct Answer - A::B::C Primary amide and `R-overset(O)overset(||)(C)-NH-Br` give Hoffmann broamamide reaction, |
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| 10. |
`C_(3)H_(9)N` represents aA. Primary aminesB. Secondary aminesC. Tertiary aminesD. All the above |
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Answer» Correct Answer - D `C-C-C-NH_(2),C-C-NH-C,C-overset(C)overset(|)(N)-C` |
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| 11. |
which of the following is produced by reducing RCN in sodium and alcohol?A. `RCONH_(2)`B. `RCOONH_(4)`C. `RCH_(2)NH_(2)`D. `(RCH_(2))_(3)N` |
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Answer» Correct Answer - C `R- CN overset(LiAlh_(4))rarr R-CH_(2)-NH_(2)` |
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| 12. |
The alkanenitriles are isomeric with-A. Primary alkanaminesB. secondary alkanaminesC. Alkyl isocyanidesD. Nitroalkanes |
| Answer» Correct Answer - C | |
| 13. |
Amide on heating with `P_(2)O_(5)` givesA. AlkalinenitrileB. Alkyl halideC. AmineD. None |
| Answer» Correct Answer - A | |
| 14. |
`P_(1),P_(2),P_(3),are:`A. B. C. D. |
| Answer» Correct Answer - A::B::D | |
| 15. |
Pthalimide`+ KOH(alc.)rightarrow[A]` `[A]+CH_(3)CH_(2)CH_(2)Br rightarrow[B]` `[B] + h_(2)O, OH^(-)overset(triangle)rarr [C]+[D]` The final products [C] [D] in the sequence of the above reactions areA. `CH_(3)NHC_(2)H_(5)`, B. `CH_(3)CH=CH_(2)`, C. `(CH_(3))_(3)N`, D. `CH_(3)CH_(2)CH_(2)NH_(2)`, |
| Answer» Correct Answer - D | |
| 16. |
The final Product is:A. B. C. D. |
| Answer» Correct Answer - A::B | |
| 17. |
Find the productA. `CH_(2)=CH_(2)`" " `underset(triangle) overset(N_(3)H)rarr`B. `CH_(3)-CH=CH_(2)" " underset(triangle) overset(N_(3)H)rarr`C. `C_(6)H_(5)-overset(O)overset(||)(C)=Cl " " underset(H_(2)O) overset(Nan_(3))rarr`D. `C_(6)H_(5)-overset(O)overset(||)(C)-NH-OH underset(H_(2)O) overset(H^(+))rarr` |
| Answer» Correct Answer - A::B::C::D | |
| 18. |
Which of the following statement is not correct?A. Primary amines show intermolecular hydrogen bonding.B. Secondary amines show intermolecular hydrogen bonding.C. Tertiary amines show intermolecular hydrogen bonding.D. Amines have a lower boiling point as compared to those of alcohols and carboxylic acids of comparab,e molar masses. |
| Answer» Correct Answer - C | |
| 19. |
Acetamide is treated separaately with the following reagents Which one of these would give methylamine ?.A. `PCL_(5)`B. SodalimeC. `NaOH+Br_(2)`D. `hot conc.H_(2)SO_(4)` |
| Answer» Correct Answer - C | |
| 20. |
Acetamide is treated separetely with the following reagents. Which one of these will give methylamine?A. `PCL_(5)`B. `NaOH+Br_(2)`C. soda limeD. hot conc. `H_(2)SO_(4)` |
| Answer» Correct Answer - B | |
| 21. |
In this reaction shown below, the major product(s) formed is //are A. B. C. D. |
| Answer» Correct Answer - A | |
| 22. |
A compound with molecular mass `180` is acylated with `CH_(3)COCI` to get a compound with molecule of the fomer compound is .A. 5B. 4C. 6D. 2 |
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Answer» Correct Answer - A Molecular mass of compound =180 Molecular mass after acetylation =390 Increases in molecular mass =210 `R-NH_(2)+CH_(3)-overset(O)overset(||)(C) -Cl to` `R-NH-overset(O)overset(||)(C)-Me` Increase in molecular mass for one` -NH_(2)` is 42 so total amino groups are present. |
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| 23. |
Butanenitrile may be prepared by heatingA. propyl alcohol with KCNB. butyl alcohol with KCNC. butyl chloride with KCND. propyl chloride with KCN |
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Answer» Correct Answer - D `CH_(3)-CH_(2)-CH_(2)-Cl overset("KCN")rarr CH_(3)-CH_(2)-CH_(2)-CN+KCI` |
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| 24. |
The compound which on rection with aqueous nirous acid at low temperature produces an oily nitrosamine, isA. methyl amineB. ethyl amineC. diethyl amineD. triethyl amine |
| Answer» Correct Answer - C | |
| 25. |
The compound which on rection with aqueous nirous acid at low temperature produces an oily nitrosamine, isA. Diethyl amineB. ethyl amineC. AnilineD. methyl amine |
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Answer» Correct Answer - A Secondry amines or treatment with `HNO_(2)` gives oily nitrosamine |
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| 26. |
The third member of homologous series of dimethy1 amine-A. `CH_(3)-CH_(2)-NH-CH_(2)-CH_(3)`B. `CH_(3)-NH-CH_(2)-CH_(2)-CH_(3-)`C. `CH_(3)-NH-CH(CH_(3))_(2)`D. `2^(nd)` and `3^(rd)` are correct |
| Answer» Correct Answer - D | |
| 27. |
Formalodoxime on reaction with Na/EtOH gives -A. `1^(@)`AmineB. `2^(@)`AmineC. `3^(@)`AmineD. All above |
| Answer» Correct Answer - A | |
| 28. |
Which are relateed with Curtius rearrangement?A. `NaN_(3)`B. `R-NH_(2)`C. `R-overset(O)overset(||)(C)-Cl`D. `R-overset(O)overset(||)(C)-OH` |
| Answer» Correct Answer - A::B::C | |
| 29. |
N-atom in quaternary ammmonium halide will have the form-A. B. C. D. |
| Answer» Correct Answer - A | |
| 30. |
Alkyl halide reacts with AgCN to from -A. AlcoholB. Cyanide C. IsocyanideD. Both B & C |
| Answer» Correct Answer - D | |
| 31. |
Alkyl halide reacts with AgCN to from -A. AlcoholB. CyanideC. IsocyanideD. Both B & C |
| Answer» Correct Answer - D | |
| 32. |
Which of the following compounds on reduction gives an amine-A. Alkyl cyanideB. AldoximeC. Alkyl isocyanideD. All above |
| Answer» Correct Answer - D | |
| 33. |
Which statement is not correct-A. methyl amine is more basic than `NH_(3)`B. Amines from hydrogen bondsC. Ethyl amine has higher boiling points than propaneD. Dimethyl amine is less basic than methyl amine |
| Answer» Correct Answer - D | |
| 34. |
Mendius reaction involves the reduction of-A. CyanoalkanesB. Alkyl isocyanidesC. OximesD. Nitroalkanes |
| Answer» Correct Answer - A | |
| 35. |
Which of the following compund gives the smell of mustard oil-A. Alkyl isocynateB. Allyl isothiocyanateC. Alkyl isocyanideD. Alkyl isonitrile |
| Answer» Correct Answer - B | |
| 36. |
Hydrolysis of alkyl isocyaide yeilds -A. Primary aminesB. Tert. AmineC. AlcohalD. Aldehyde |
| Answer» Correct Answer - A | |
| 37. |
Ethylamine can be prepared by the all except-A. Curtius reactionB. Hofmann reactionC. Mendius reaction Reduction of formaldoximeD. Reduction of formalodoxime |
| Answer» Correct Answer - D | |
| 38. |
Amines are basic in nature because-A. They produce `OH^(-)` ions when treated with waterB. They have replaceable H atoms on N atomsC. They have lone pair electron on N atomD. None of these |
| Answer» Correct Answer - C | |
| 39. |
The presence of primary amines can be confiremed by-A. Reaction with `HNO_(2)`B. Reaction with `CHCl_(3)`and `alc. KOH`C. Reaction with Grignard reagentD. Reaction with acetyl chloride |
| Answer» Correct Answer - B | |
| 40. |
Which of the following reaciton can be used to make ethyl isocynide?A. `CH_(3)CH_(2)NH_(2)+CHCL_(3) underset(triangle)overset("KOH")rarr`B. `CH_(3)CH_(2)Br+AgCN rarr`C. `CH_(3)CH_(2)-NH-underset(O)underset(||)(C)-H overset(POCl_(3))rarr`D. `CH_(3)CH_(2)Br +KCN rarr` |
| Answer» Correct Answer - A::B::C | |
| 41. |
By which pf the following reactions can methylcyanide be prepared?A. `CH_(3)Br underset(DMF)overset("KCN")rarr `B. `CH_(3)NH_(2)+CHCl_(3) overset("KOH") rarr `C. `CH_(3)-CH =N-OH underset(triangle) overset(P_(2) O_(5))rarr `D. `CH_(3)-overset(O)overset(||)(C)-NH_(2) overset(P_(4)O_(10))underset(triangle)rarr` |
| Answer» Correct Answer - A::C::D | |
| 42. |
An orgainc compound A upon reacting with `NH_(3)` gives `B` On heating `B` give `C.C` in presence `KOH` reacts with `Br_(2)` to yield `CH_(3)CH_(2)NH_(2) A` is .A. `CH_(3)CH_(2)CH_(2)COOH`B. `CH_(3)underset(CH_(3))underset(|)(CH)-COOH`C. `CH_(3)CH_(2)COOH`D. |
| Answer» Correct Answer - C | |
| 43. |
Lowest boiling point will be of the compound-A. EthylamineB. EthylmethylamineC. 1-PropaneamineD. N,N-Dimethylmethanamine |
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Answer» Correct Answer - A Due to lower molecular mass. |
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| 44. |
Which of the following amines, can give N-nitrosoamine on treatment with `HNO_2`?A. B. `H_(3)C-underset(CH_(3))underset(|)(CH)-NH_(2)`C. D. |
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Answer» Correct Answer - A::C Secondry amines give netrosoamine on treatment with `HNO_(2).` |
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