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.
| 51. |
which of the following compounds cannot give Hofmann rearrangement ?A. `Ph-overset(CH_(3))overset(|)underset(CH_(3))underset(|)C-overset(O)overset("||")C-NH_(2)`B. `CH_(3)-CH_(2)-overset(O)overset("||")C-NH-Ph`C. D. `Ph-overset(O)overset("||")C-NH_(2)` |
| Answer» Correct Answer - B | |
| 52. |
An organic compound (A) `C_(5)H_(10)O_(2)` reacts with `Br_(2)` in presence of phosphorus to give (B). Compound (B) contains an asymmetric carbon atom and yields (C) on dehydrobromination compound (C) does not show geometrical isomerism and on decarboxylation gives an alkene (D) which on ozonolysis gives E and F. Compound (E) gives positive Schiff test but (F) does not. Identify correct structure of A:A. B. C. D. None of these |
| Answer» Correct Answer - B | |
| 53. |
An organic compound (A) `C_(5)H_(10)O_(2)` reacts with `Br_(2)` in presence of phosphorus to give (B). Compound (B) contains an asymmetric carbon atom and yields (C) on dehydrobromination compound (C) does not show geometrical isomerism and on decarboxylation gives an alkene (D) which on ozonolysis gives E and F. Compound (E) gives positive Schiff test but (F) does not. Find out structure of D :A. B. C. D. |
| Answer» Correct Answer - C | |
| 54. |
Choose the incorrect rate of decarboxylation in the mentioned conditions:A. `H_(3)C-CH=CH-CH_(2)-overset(O)overset("||")C-OH gtH_(3)C-CH_(2)-CH=CH-overset(O)overset("||")C-OH` (decarboxylation on heating)B. `F_(3)C-COOH gtCl_(3)C-overset(O)overset("||")C-OH ("decarboxylation on heating with sosalime")`C. (decarboxylation on heating with `H_(2)SO_(4))`D. (decarboxylation on heating) |
| Answer» Correct Answer - B::C | |
| 55. |
Arrange the following amides according to their relative reactivity when treated with `Br_(2)` in excees of strong base. A. `P gt Q gt R gt S`B. `R gt S gt P gt Q`C. `Q gt P gt S gt R`D. `S gt P gt Q gt R` |
| Answer» Correct Answer - C | |
| 56. |
Which of the following reactions does not involve decarboxylation?A. `CH_(3)COOAg+Br_(2)overset(C Cl_(4))underset(Delta)rarr`B. C. D. |
| Answer» Correct Answer - D | |
| 57. |
Which of the following statements are correct for benzoic acid ?A. Nitration gives o- and - p- nitrobenzoic acidB. Bromination gives m- bromo benzoic acidC. The Friedel- Crafts reaction with `CH_(3)-underset(O)underset("||")C-Cl//AlCl_(3)` gives m- carboxy acetophenone.D. The reaction with oleum gives 3- sulphobenzoic acid |
| Answer» Correct Answer - B::D | |
| 58. |
The product of reaction is:A. B. C. D. |
| Answer» Correct Answer - B | |
| 59. |
Which reaction would best accomplish the following conversion? A. `LiAlH_(4), "Collins reagent"`B. `NaBH_(4),"Jones reagent"`C. `NaBH_(4), CrO_(3),H^(oplus)`D. |
| Answer» Correct Answer - A | |
| 60. |
The correct sequence of regents for the following conversion is: A. `overset(SOCl_(2))rarroverset(Ag)underset(H_(2)O)rarroverset(CH_(2)N_(2))rarr`B. `overset(SOCl_(2))rarroverset(CH_(2)N_(2))rarroverset(Ag,H_(2)O)rarr`C. `overset(CH_(2)N_(2))rarroverset(SOCl_(2))rarroverset(Ag)underset(H_(2)O)rarr`D. `overset(Ag)underset(H_(2)O)rarroverset(SOCl_(2))rarroverset(CH_(2)N_(2))rarr` |
| Answer» Correct Answer - B | |
| 61. |
Which of the following will not produce benzoic acid by oxidation with alkaline `KMnO_(4)` ?A. `Ph-CH_(3)`B. `Ph-CH_(2)-Cl`C. `Ph-CH_(2)CH_(3)`D. `Ph-overset(CH_(3))overset(|)underset(CH_(3))underset(|)C-CH_(3)` |
| Answer» Correct Answer - D | |
| 62. |
In the esterificaiton reaction: Which of the following is formed as an intermediate ?A. B. C. D. |
| Answer» Correct Answer - A | |
| 63. |
Name the end product in the following series of reaction `CH_(3)COOH overset (NH_(3)) to A overset (Delta)underset (P_(2)O_(5)) to B`A. `CH_(4)`B. `CH_(3)OH`C. ethanenitrileD. ammonium acetate |
| Answer» Correct Answer - C | |
| 64. |
The end product in the following sequence is: `"Accetamide"overset(P_(2)O_(5))rarr(A) overset(H_(2),Ni)rarr(B)`A. `CH_(3)NH_(2)`B. `C_(2)H_(5)NH_(2)`C. `CH_(3)CN`D. `CH_(3)COONH_(4)` |
| Answer» Correct Answer - B | |
| 65. |
`underset((X))(C_(4)H_(11))N+HNO_(2)rarrC_(4)H_(10)O(3^(@) "alcohol")` (X) will give:A. carbylamine reactionB. Hofmann mustard oil reactionC. diazonium salt with `HNO_(2)`D. base insoluble product with Hinsberg reagents |
| Answer» Correct Answer - A::B::C | |
| 66. |
In a reaction, `(A)overset(NH_(3))rarr(B)overset(Heat)rarr(C)overset(P_(2)O_(5))rarrC_(2)H_(5)CN` (A), (B) and (C) are:A. `CH_(3)COOH, CH_(3)COONH_(4) and CH_(3)CONH_(2)`B. `CH_(3)COCl, CH_(3)CONH_(2) and CH_(3)COONH_(4)`C. `C_(2)H_(5)COOH, C_(2)H_(5)COONH_(4) and C_(2)H_(5)CONH_(2)`D. `C_(2)H_(5)CONH_(4),C_(2)H_(5)CONH_(2) and C_(2)H_(5)COOH` |
| Answer» Correct Answer - C | |
| 67. |
The intemediates formed during the reaction: `C_(6)H_(5)CH_(2)COOAg+Br_(2)overset(C Cl_(4))underset(Delta)rarrC_(6)H_(5)CH_(2)Br`A. `C_(6)H_(5)-CH_(2)-overset(O)overset("||")C-O^(.)`B. `C_(6)H_(5)overset(.)CH_(2)`C. `Br^(.)`D. |
| Answer» Correct Answer - A::B::C | |
| 68. |
`(CH_(3))_(3)C-overset(O)overset("||")C-CH_(2)-overset(O)overset("||")C-O-C_(2)H_(5)overset(C_(2)H_(5)oversetΘO(1"Mole"))underset(PhCH_(2)Br)rarroverset(H^(oplus)"//"H_(2)O)underset(Delta)rarr" Final product":`A. `(CH_(3))_(3)C-overset(O)overset("||")C-CH_(2)-overset(O)overset("||")C-OH`B. `(CH_(3))_(3)C-overset(O)overset("||")C-CH_(3)`C. `(CH_(3))_(3)C-overset(O)overset("||")C-underset(CH_(2)Ph)underset(|)CH-overset(O)overset("||")C-OC_(2)H_(5)`D. `(CH_(3))_(3)C-overset(O)overset("||")C-CH_(2)-CH_(2)-Ph` |
| Answer» Correct Answer - D | |
| 69. |
Choose the correct case of hydrolysis for the following molecules : (P) `CH_(3)-overset(O)overset("||")C-OCPh_(3)` (Q) `CH_(3)-underset(CH_(3))underset(|)CH-overset(O)overset("||")C-O-CPh_(3)` (R) `Ph-underset(CH_(3))underset(|)CH-overset(O)overset("||")C-O-CPh_(3)` (S) `CH_(3)CH_(2)-underset(CH_(3))underset(|)CH-overset(O)overset("||")C-O-CPh_(3)`A. `P gt Q gt R gt S`B. `P = Q = R = S`C. `S gt R gt Q gt P`D. `Q gt P gt S gt R` |
| Answer» Correct Answer - B | |
| 70. |
In the reaction sequence : `CH_(3)-C-=C-H overset(CH_(3)MgBr)to CH_(4)+(A) overset((i) CO_(2))underset((ii) H_(2)O // H^(+))to` (B) will be :A. B. C. D. |
| Answer» Correct Answer - C | |
| 71. |
The end product in the reaction is: `CH_(3)CONH_(2)overset(P_(2)O_(5))rarrBoverset(H_(2),Ni)rarrCoverset(HNO_(2))rarrDoverset(Cu)underset(300^(@))rarrE`A. `CH_(3)CHO`B. `CH_(3)COCH_(3)`C. `CH_(3)COOC_(2)H_(5)`D. `(CH_(3)CO)_(2)O` |
| Answer» Correct Answer - A | |
| 72. |
Identify Z in the following reaction sequence. `CH_(3)Iunderset("Ether")overset(Mg)rarrXunderset(H_(3)O^(+))overset("Dry ice")rarr Y underset("Red P")overset(Cl_(2))rarrZ`A. `CH_(3)COOH`B. `CH_(3)MgI`C. `KCN,H^(+)`D. `HCN, PBr_(3),H^(+)` |
| Answer» Correct Answer - D | |
| 73. |
Which of the following will give the racemised product on hydrolysis in pressure of `H_(2)SO_(4)` ?A. `Ph-underset(CH_(3))underset(|)CH-overset(O)overset("||")C-O-CH_(2)CH_(3)`B. C. D. |
| Answer» Correct Answer - D | |
| 74. |
Phenol is a weaker acid than acetic acid because:A. phenoxide ion is better stabilized by resonance than acetic ionB. acetate ion is better stabilized by resonance than phenoxide ionC. phenol is less soluble in water than acetic acidD. both phenoxide ion and acetate ion are equally stable |
| Answer» Correct Answer - B | |
| 75. |
The decarboxylation of `beta` - ketoacids, `beta, gamma` - unsaturated acid and geminal diacid proceed through the formation of cyclic transition state in presence of heat. `CH_(3)-overset(O)overset("||")C-CH_(2)-overset(O)overset("||")C-OHoverset(Delta)rarrCH_(3)-overset(O)overset("||")C-CH_(3)` Mechanism: Find the correct product of following reaction: `H_(3)C-CH=CH-CD_(2)-overset(O)overset("||")C-OHoverset(Delta)rarr`A. `H_(3)C-CH_(2)-CH=CD_(2)`B. `CH_(3)-CH=CH-CHD_(2)`C. `H_(3)C-underset(CHD_(2))underset(|)C=CH_(2)`D. None of these |
| Answer» Correct Answer - A | |
| 76. |
The decarboxylation of `beta` - ketoacids, `beta, gamma` - unsaturated acid and geminal diacid proceed through the formation of cyclic transition state in presence of heat. `CH_(3)-overset(O)overset("||")C-CH_(2)-overset(O)overset("||")C-OHoverset(Delta)rarrCH_(3)-overset(O)overset("||")C-CH_(3)` Mechanism: Find the product of following reaction : A. B. C. D. |
| Answer» Correct Answer - A | |
| 77. |
Which of the following sets of reagents X and Y will convert propanoic acid into alanine (an amino acid)? `H_(3)C-CH_(2)-overset(O)overset(||)C-OHoverset(X)rarrH_(3)C-overset(Br)overset(|)CH-overset(O)overset(||)C-OHoverset(Y)rarrH_(3)C-overset(oplus)overset(NH_(3))overset(|)CH-C-COO^(-)`A. `Br_(2),NaNH_(2)`B. `Br_(2)//P,NaOH`C. `Br_(2)//P,NH_(3)`D. `Br_(2)//HBr,NaNH_(2)` |
| Answer» Correct Answer - C | |
| 78. |
Which of the following is the weakest acid ?A. `Cl_(3)C COOH`B. `Cl_(2)CHCOOH`C. `ClCH_(2)COOH`D. `CH_(3)COOH` |
| Answer» Correct Answer - D | |
| 79. |
the reaction, `CH_(3)COOC_(2)H_(5) overset(Na+C_(2)H_(5)OH)underset(4[H])rarr C_(2)H_(5)OH+CH_(3)CH_(2)OH` is called:A. Claisen reductionB. Clasiden condensationC. Bouveault Blanc reductionD. Tischenko reduction |
| Answer» Correct Answer - C | |
| 80. |
Name of the reaction which converts F into G:A. Cannizzaro reactionB. Claisen condensationC. Aldol condensationD. Reformatsky reaction |
| Answer» Correct Answer - C | |
| 81. |
The Hunsdiecker reaction is believed to proceed by a free radical mechanism and involves the formation of an acyl hypohalite. A. `R-overset(O)overset("||")C-O-Ag+Br_(2)rarrR-overset(O)overset("||")C-O-Br+AgBr` B. `R-overset(O)overset("||")C-O-BrrarrR-overset(O)overset("||")C-overset(.)O+Boverset(.)r` C. `R-overset(O)overset("||")C-overset(.)CrarrR^(.)+CO_(2)` D. `R•+R-overset(O)overset("||")C-OBrrarrR-Br+R-overset(O)overset("||")C-O^(.)` The rate determining step is :A. Step IB. Step IIC. Step IIID. Step IV |
| Answer» Correct Answer - D | |
| 82. |
The Hunsdiecker reaction is believed to proceed by a free radical mechanism and involves the formation of an acyl hypohalite. A. `R-overset(O)overset("||")C-O-Ag+Br_(2)rarrR-overset(O)overset("||")C-O-Br+AgBr` B. `R-overset(O)overset("||")C-O-BrrarrR-overset(O)overset("||")C-overset(.)O+Boverset(.)r` C. `R-overset(O)overset("||")C-overset(.)CrarrR^(.)+CO_(2)` D. `R•+R-overset(O)overset("||")C-OBrrarrR-Br+R-overset(O)overset("||")C-O^(.)` `H_(3)C-overset(CH_(3))overset(|)underset(CH_(3))underset(|)C-overset(O)overset("||")C-OAgoverset(Br_(2))underset(Delta)rarr " Major product":`A. `H_(3)C-overset(CH_(3))overset(|)underset(CH_(3))underset(|)C-CH_(2)-Br`B. `H_(3)C-overset(CH_(3))overset(|)underset(CH_(3))underset(|)C-Br`C. D. `H_(3)C-overset(CH_(3))overset(|)underset(CH_(3))underset(|)C-overset(CH_(3))overset(|)underset(CH_(3))underset(|)C-CH_(3)` |
| Answer» Correct Answer - C | |
| 83. |
The Hunsdiecker reaction is believed to proceed by a free radical mechanism and involves the formation of an acyl hypohalite. A. `R-overset(O)overset("||")C-O-Ag+Br_(2)rarrR-overset(O)overset("||")C-O-Br+AgBr` B. `R-overset(O)overset("||")C-O-BrrarrR-overset(O)overset("||")C-overset(.)O+Boverset(.)r` C. `R-overset(O)overset("||")C-overset(.)CrarrR^(.)+CO_(2)` D. `R•+R-overset(O)overset("||")C-OBrrarrR-Br+R-overset(O)overset("||")C-O^(.)` `Ph-CH=CH-underset(CH_(3))underset(|)CH-overset(O)overset("||")C-OAgoverset(Br_(2))underset(Delta)rarr" Product"` The major product is :A. `Ph-CH=CH-underset(CH_(3))underset(|)CH-Br`B. `Ph-overset(Br)overset(|)CH-CH=CH-CH_(3)`C. `PH-CH=overset(Br)overset(|)C-CH_(2)-CH_(3)`D. `Ph-CH=CH-underset(CH_(3))underset(|)CH-CH_(2)Br` |
| Answer» Correct Answer - B | |
| 84. |
Which of the following is not an acid anhydride ?A. B. C. D. |
| Answer» Correct Answer - A | |
| 85. |
`Ph-CH_(2)-O-overset(O)overset("||")C-CH_(3)+overset(Θ18)(OH)rarrX+Y:`A. `X " is"Ph-CH_(2)-overset(18)(OH)`B. `X " is "Ph-CH_(2)-OH`C. `Y " is "CH_(3)-underset(O)underset("||")C-O^(Θ)`D. `Y " is "CH_(3)-underset(O)underset("||")C-overset(18)(O^(Θ))` |
| Answer» Correct Answer - B::D | |
| 86. |
X + Y X and Y are:A. B. C. D. all of these |
| Answer» Correct Answer - B::C | |
| 87. |
`Ph-CH_(2)-overset(CH_(2))overset(|)underset((+))CH-OHoverset(TaCl)rarrXoverset(KSH)rarrY:`A. `X " is "Ph-underset((+))CH_(2)-overset(CH_(3))overset(|)CH-OTs`B. `X " is "Ph--CH_(2)-underset((-))overset(CH_(3))overset(|)CH-OTs`C. `Y " is "Ph-underset((-))CH_(2)-overset(CH_(3))overset(|)CH-SH`D. `Y " is "Ph-underset((+))CH_(2)-overset(CH_(3))overset(|)CH-SH` |
| Answer» Correct Answer - A::C | |
| 88. |
Which of the following organic acid decolourises bromine water as well as forms anhydride ?A. `HOOC-COOH`B. `HOOC-CH_(2)-COOH`C. `underset(H-C-COOH)underset(||)overset(H-C-COOH)"`D. `underset(HOOC-C-H)overset(H-C-COOH)overset(||)"` |
| Answer» Correct Answer - C | |
| 89. |
`H_(3)C-overset(O)overset("||")C-O-underset(Ph)underset(|)C=CH_(2)+H_(2)O overset(NaOH)underset(H_(3)^(oplus)O)rarrX+Y` X and Y are:A. `X " is "CH_(3)-overset(O)overset("||")C-O-CH_(2)-Ph`B. `Y " is "HCHO`C. `Y " is "H_(3)C-overset(O)overset("||")C-OH`D. `X " is "Ph-underset(O)underset("||")C-CH_(3)` |
| Answer» Correct Answer - C::D | |
| 90. |
`underset((X))(C_(4)H_(8)O_(4))overset(LiAlH_(4))rarroverset(HBr)rarroverset(NaCN)rarroverset(H_(3)overset(oplus)O,CaO)underset(Delta)rarrYoverset(CaO, Delta)larr` hexanedioic acid :A. B. C. D. |
| Answer» Correct Answer - B::C | |
| 91. |
`H_(2)C(COOEt)_(2)overset(1.EtO^(Theta)Na^(oplus))underset(2.Br-CH_(2)-COOEt)rarrAoverset(1.KOH,Delta)underset(2.H_(3)^(oplus)O)rarrB` The end product B will be:A. `EtOOC-CH_(2)-HC(COOEt)_(2)`B. C. D. |
| Answer» Correct Answer - B | |
| 92. |
`Poverset(PhMgBr)underset(H^(oplus)//H_(2)O)rarrCH_(3)-overset(OH)overset(|)underset(Ph)underset(|)C-Ph` Identify structures of P :A. `CH_(3)-overset(O)overset("||")C-Cl`B. `CH_(3)-overset(O)overset("||")C-OC_(2)H_(5)`C. `CH_(3)-overset(O)overset("||")C-Ph`D. `CH_(3)OH` |
| Answer» Correct Answer - A::B::C | |
| 93. |
X and Y in the reaction sequence `R-C-=Noverset(H_(3)O^(oplus))rarrXoverset("diazomethane")rarrY` ,are given by the set:A. Carboxamide, CarbonitrileB. Caboxylic acid, CarbonitrileC. `RCOOH,RCOOH_(3)`D. `RCONH_(2),RCOCH_(3)` |
| Answer» Correct Answer - C | |
| 94. |
`PhCOOH and Ph-CH_(3)` can be separated by:A. `NaHCO_(3)`B. aq. `NaHCO_(3)+n- "Hexane"`C. `H_(2)O`D. n- Hexane |
| Answer» Correct Answer - A | |
| 95. |
Compound A having molecular formula `C_(7)H_(7)NO_(2)` can undergo reduction with `Sn+HCl` treatement of A with `KMnO_(4)` gives a compound B `(C_(7)H_(5)NO_(4))` which has lower boiling point compared to its other isomer. B when treated with `SOCl_(2)` produces C. C when treated with `CH_(2)N_(2)` produces D of molecular formula `C_(8)H_(5)N_(3)O_(3)` D when treated with `Ag//H_(2)O` produces E. Find out structure of C :A. B. C. D. |
| Answer» Correct Answer - B | |
| 96. |
Which of the following compounds will undergo decarboxlation on heating? A. B. C. D. |
| Answer» Correct Answer - C | |