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.
| 101. |
A compound with molecular mass `180` is acylated with `CH_(3)COCI` to get a compound with molecule of the fomer compound is .A. 6B. 2C. 5D. 4 |
| Answer» Correct Answer - C | |
| 102. |
The diazonium salts are the reaction products in presence of excess of mineral acid with nitrous acid andA. Primary aliphatic amineB. secondary aromatic amineC. primary aromatic amineD. Tertiary aliphatic amine |
| Answer» Correct Answer - C | |
| 103. |
(A) Rate of nitration of benzene and hexadeuterobenzene are different. (R) C-H bond is stronger than C-D bond.A. If both A and R are correct and R is the correct explanation of A.B. If both A and R are correct and R is not the correct explanation of A.C. If A is the correct but R is incorect.D. If both A and R is incorect. |
| Answer» Correct Answer - D | |
| 104. |
Which of the following is most basic?A. B. C. D. |
| Answer» Correct Answer - C | |
| 105. |
In the reaction the product E is :-A. B. C. D. |
| Answer» Correct Answer - D | |
| 106. |
(a) Both assertion and reason are correct and the reason is correct expansion to assertion. (b) Both assertion and reason are correct but reason is not the correct expansion of assertion (c) Assertion is correct but reasion is wrong (d) Assertion is incorrect but reason is correct. Q. Assertion: `Phoverset(c+)(N)_2Br^(Theta)` on reaction with nitrobenzene in the presence of `NaOH` gives p-nitro biphenyl. Reason: The reaction takes place by free radical mechanism. |
| Answer» It is an example of gomberg reaction which takes place by free radical mechanism. | |
| 107. |
The compound that will react most readily with `NaOH` to from methanol isA. `(CH_3)_4N^+ I^-`B. `CH_3OCH_3`C. `(CH_3)_3S^(+) I^-`D. `(CH_3)_3Cl` |
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Answer» Correct Answer - A `(CH_3)_4N^+ I^(-) + NaOH to (CH_3)_4N^(+)OH^(-) + NaI (CH_3)_4 N^(+) OH^(-) oversetDeltato (CH_3)_3 N + underset"Methanol"(CH_3OH) ` |
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| 108. |
In the following reactions, the major product W is:A. B. C. D. |
| Answer» Correct Answer - A | |
| 109. |
(a) Both assertion and reason are correct and the reason is correct expansion to assertion. (b) Both assertion and reason are correct but reason is not the correct expansion of assertion (c) Assertion is correct but reasion is wrong (d) Assertion is incorrect but reason is correct. Q. Assertion: `Phoverset(c+)(N)_2Br^(Theta)` is more acidic than `NH_4Br`. Reason: `PhNoverset(c+)(H)_3` (anilinium ion) is resonance stabilised. |
| Answer» `NH_3` is a stronger base than aniline, therefore, the conjugate acid of aniline (i.e., `Phoverset(c+)(N)H_2)` is more acidic than the conjugate acid of `NH_3` (i.e., `overset(c+)(N)H_3` ion). | |
| 110. |
The major product of the following reaction is: A. B. C. D. |
| Answer» Correct Answer - A | |
| 111. |
In the following reaction, the structure of the major product (X) is:A. B. C. D. |
| Answer» Correct Answer - B | |
| 112. |
The conjugate base of `[(CH_(3))_(3)NH]^(+)` is:A. `(CH_(3))_(3)N`B. `(CH_(3))_(3)N^(-)`C. `(CH_(3))_(2)N^(+)`D. `(CH_(3))_(3)N^(+)` |
| Answer» Correct Answer - A | |
| 113. |
`C_(3)H_(9)N` represents aA. primary amineB. secondary amineC. tertiary amineD. all of these |
| Answer» Correct Answer - D | |
| 114. |
The reduction of benzenediazonium chloride to phenyl hydrazine can be accomplished by:A. `CH_(3)CH_(2)OH`B. `H_(3)PO_(2)`C. `SnCl_(2), HCl`D. `Na_(2)SO_(3)` |
| Answer» Correct Answer - C::D | |
| 115. |
Nitrobenzene on reaction with conc `HNO_(3)//H_(2)SO_(4)` at `80-100^(@)C` forms which one of the following products .A. 1,2-DinitrobenzeneB. 1,3-DinitrobenzeneC. 1,4-DinitrobenzeneD. 1,2,4-Trinitrobenzene |
| Answer» Correct Answer - B | |
| 116. |
Which one of the following is an-expolsive?A. NitrobenzeneB. NitrophenolC. NitromethaneD. Trinitrobenzene |
| Answer» Correct Answer - D | |
| 117. |
Friedel-Crafts reaction is not given by:A. B. C. D. |
| Answer» Correct Answer - B | |
| 118. |
Which of the following compounds will not undergo Friedel`-` Crafts reaction easily ?A. NitrobenzeneB. TolueneC. CumeneD. Xylene |
| Answer» Correct Answer - A | |
| 119. |
Idendify the correct method for the synthesis of the compound shown below from the following alternatives ? A. B. C. D. |
| Answer» Correct Answer - A | |
| 120. |
Which of the following is not the property of ethanenitrile `(CH_3CN)` ?A. Undergoes acidic hydrolysis to give carboxylic acid.B. Undergoes alkaline hydrolysis to give salt of carboxylic acid.C. It tautomerises to give methyl isocyanide.D. It gives carbylamine reaction with chloroform |
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Answer» Correct Answer - D Carbykamine reaction is given by aliphatic and aromatic primary amine. `CH_3CN` does not give carbylamine reaction with chloroform because it is not an amine . `CH_3CN` undergoes acidic hydrolysis to give carboxylic acid. `CH_3CN underset"Partial hydrolysis"overset(H_2O // H^+) to CH_3CONH_2 underset"Complete hydrolysis " overset(H_2O // H^+) to underset"Acetic acid"(CH_3COOH)+CH_3` `CH_3CN` undergoes alkaline hydrolysis to give salt of carboxylic acid . `CH_3CN underset(H_2O)overset(NaOH)to CH_3CONH_2 underset(H_2O)overset(NaOH)to underset("Sodium acetate" ) (CH_3COoverset-Ooverset+Na)+ NH_3` `CH_3CN` tautomerises to give methyl isocyanide. `CH_3-C -= N hArr C overset(larr)= N -CH_3` |
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| 121. |
`CH_3CNoverset(Na+C_2H_5OH)toX` The compound X isA. `CH_3CONH_2`B. `CH_3CH_2NH_2`C. `C_2H_6`D. `CH_3NHCH_3` |
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Answer» Correct Answer - B `CH_3C-=N+4[H]underset(reduction)overset(Na+C_2H_5OH)toCH_3CH_2NH_2` |
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| 122. |
Which of the following is a set of enamine?A. I and IIB. II, III and IVC. II, IV and VD. only II |
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Answer» Correct Answer - D `alpha`,`beta`- unsaturated amines are called enamines. Thus, only it is an enamine. |
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| 123. |
Ethylamine can be obtaine byA. Action of `NH_3` on ethyl oidideB. Action of `NH_3` on ethyl alcoholC. Both (a) and (b)D. None of the above |
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Answer» Correct Answer - C `C_2H_5I+NH_3toHI+C_2H_5-NH_2` `C_2H_5OH+NH_3toH_2O+C_2H_4-NH_2` |
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| 124. |
Ethylammc reacts with nitrous acid to form:A. methyl alcoholB. ethyl alcoholC. ethaneD. ethyl nitrite |
| Answer» Correct Answer - B | |
| 125. |
Hydrolysis of acetonitrile in acidic medium givesA. `CH_3CH_2NH_2`B. `CH_3COOH`C. `CH_3CONH_2`D. `CH_3CHO` |
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Answer» Correct Answer - B `underset"Acetonitrile"(CH_3-CN+H_2O) underset"Partial Hydrolysis"overset(H_2O // HCl)to CH_3CONH_2 underset"Complete Hydrolysis"overset(H_2O // HCl)to underset"Acetic acid"(CH_3COOH) + NH_4Cl` |
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| 126. |
Reduction of nitroalkanes in netural medius `(e.g. Zn+NH_(3)Cl)` forms mainly:A. `R-NH_(2)`B. `R-NHOH`C. `R-N=N-Cl`D. all of these |
| Answer» Correct Answer - B | |
| 127. |
Which of the following is nitroproduct?A. `C_(6)H_(5)NO_(2)`B. `CH_(3)CH_(2)ONO`C. D. `C_(6)H_(4)(OH)NO_(2)` |
| Answer» Correct Answer - B | |
| 128. |
Which of the following compound is decomposed by the action of `HNO_2`A. `CH_3NH_2`B. `NH_2 oversetoversetO(||)C NH_2`C. `CH_3 oversetoverset(O)(||)CNH_2`D. All of these |
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Answer» Correct Answer - A `CH_3NH_2 overset(HNO_2)to CH_3OH + N_2 + H_2O` |
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| 129. |
In Nef-Carbonyl synthesis, primary nitroalkanes treatment with NaOH followed by acidification with 50%, `H_(2)SO_(4)` gives:A. aldehydesB. ketonesC. ketoacidsD. esters |
| Answer» Correct Answer - A | |
| 130. |
Which of the following isomerism is exhibited in nitroethaneA. Geometrical isomerismB. Optical isomerismC. Functional isomerismD. Space isomerism |
| Answer» Correct Answer - C | |
| 131. |
In the reaction `CH_(3)CN+2H underset(HCI)overset(SnCI_(2))rarrX underset(H_(2)O)overset("Boiling")rarrY` the term `Y` is .A. acetoneB. ethanamineC. acetaldehydeD. dimethyl amine |
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Answer» Correct Answer - C `SnCl_2 + 2HCl (g) to SnCl_4 + 2[H]` `CH_3CN + 2[H] + HCl to CH_3CH undersetX=NH.HCl underset"Boil"overset(H_2O)to undersetY(CH_3CHO) + NH_4Cl` X is acetaldimine hydrochloride and Y is acetaldehyde. |
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| 132. |
Identify A and B in the reaction given below Ethane nitrile `underset(aq." "H_(2)SO_(4)+2H_(2)O-NH_(3))overset("Hydrolysi")toA underset("Soda lime "Delta-CO_(2))overset("Decarboxylation")toB`A. acetic acid, methanolB. acetone, methaneC. ethanoic acid, ethaneD. ethanoic acid, methane |
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Answer» Correct Answer - D `underset"Ethane nitrile"(CH_3CN) underset(aq. H_2SO_4, 2H_2O -NH_3)overset"Hydrolysis"to undersetundersetA"Ethanoic acid"(CH_3COOH) underset("soda lime," Delta -CO_2) overset"Decarboxylation"to undersetBunderset"Methane"(CH_4)` Hence , A and B are ethanoic acid and methane respectively |
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| 133. |
Ethyl nitrite on reduction with Sn/HCI gives:A. `C_(2)H_(5)NH_(2)+HNO_(2)`B. `C_(2)H_(5)NH_(2)+H_(2)O`C. `C_(2)H_(5)OH+NH_(4)OH`D. `C_(2)H_(5)OH+NaNO_(2)` |
| Answer» Correct Answer - C | |
| 134. |
Identify Zin the sequence, `CH_3COONH_4 oversetDeltato X undersetDeltaoverset(P_2O_5)to Y overset(H_2O //H^+)to Z. `A. `CH_3CH_2CONH_2`B. `CH_3CN`C. `CH_3COOH`D. `(CH_3CO)_2O` |
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Answer» Correct Answer - C `CH_3COONH_4 oversetDeltato undersetundersetX "Acetamide"(CH_3CONH_2) underset(Delta (-H_2O))overset(P_2O_5)to undersetundersetY "Methyl cyanide"(CH_3CN) overset(H_2O // H^+) to undersetundersetZ "Acetic acid"(CH_3COOH)` |
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| 135. |
Consider the following reaction `C_(6)H_(5)NO_(2) overset(Sn//HCl)rarr X overset(C_(6)H_(5)COCl)rarr Y + HCl` What is Y ?A. AcetanilideB. BenzanilideC. AzobenzeneD. Hydrazobenzene |
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Answer» Correct Answer - B `underset"Nitrobenzene"(C_6H_5NO_2) overset"Sn / HCl"to underset"(X)"underset"Aniline"(C_6H_5NH_2) underset"aq. NaOH" overset(C_6H_5COCl)to underset"(Y)"underset"Benzanilide"(C_6H_5CONHC_6H_5)+HCl ` |
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| 136. |
In the chemical reaction, `CH_3CH_2NH_2 + CHCl_3 + 3KOH to A + B + 3H_2O` The compounds A and B respectively areA. `CH_3CH_2CONH_2` and 3KClB. `C_2H_5NC` and `K_2CO_3`C. `C_2H_5NC` and `3KCl`D. `C_2H_5CN` and 3KCl |
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Answer» Correct Answer - C `CH_3CH_2NH_2+ CHCl_3 + 3KOH to undersetA(CH_3CH_2NC) + undersetB(3KCl)+ 3H_2O` This reaction Is known as carbylamine reaction. |
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| 137. |
In the following sequence of reaction, the major product ( C) `CH_(3)CH_(2)I overset(NaCN)to(A) underset("Partial hydrolysis")overset(OH^(-))to(B)overset(Br_(2)//NaOH)to(C)`A. `CH_3CH_2NH_2`B. `CH_3. CH_2 undersetundersetO(||)C-NHBr`C. `CH_3.CH_2-COONH_4`D. `CH_3.CH_2undersetunderset(O)(||)C-NBr_2` |
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Answer» Correct Answer - A `CH_3CH_2I overset"NaCN"to undersetA(CH_3CH_2CN) underset"Partial hydrolysis"overset(OH^-)to undersetB(CH_3CH_2CONH_2) overset(Br_2//NaOH)to undersetC(CH_3CH_2NH_2)` |
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| 138. |
Secondary amines on oxidation with `KMnO_(4)` gives:A. dialkyl hydroxylamineB. tetralkyl hydrazineC. ketonesD. amine oxide |
| Answer» Correct Answer - B | |
| 139. |
which of the compounds give cine substitution produced on reaction with `NaNH_(2)` in liquid `NH_(3)`?A. B. C. D. |
| Answer» Correct Answer - A::B::D | |
| 140. |
Among the following compounds, which will react with acetone to give product A. `C_(6)H_(5)NH_(2)`B. `(CH_(3))_(3)N`C. `C_(6)H_(5)NHC_(6)H_(5)`D. `C_(6)H_(5)NHNH_(2)` |
| Answer» Correct Answer - A::D | |
| 141. |
Benzene is obtained from benzendiazonium chloride by the:A. reduction with alkaline stannous chlorideB. reduction with acidic stannous chlorideC. action of hyposphorus acidD. action of ethyl alcohol |
| Answer» Correct Answer - A::C::D | |
| 142. |
Oxidation (A) give para-benzoquinone (A) is:A. B. C. D. |
| Answer» Correct Answer - A::B::C | |
| 143. |
Write the IUPAC names of the following compounds. `CH_(3)CH_(2)NHCH_(2)CH_(2)CH_(3)` |
| Answer» `CH_(3)-CH_(2)-NH-CH_(2)-CH_(2)-CH_(3)" "` N - Ethyl 1 - Propanamine | |
| 144. |
Give one chemical test of distinguish between the following pairs of compounds. Metylamine and dimethylamine |
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Answer» Methyl amine `(1^(@)-"amine")` and dimethyl amine `(2^(@)-"amine")` are distinguished by iso cyanide test (or) Carbylamine test. Methyl amine responds to carbylamine reaction to produce methyl isocyanide where as dimethyl amine does not respond to the iso cyanide test `CH_(3)NH_(2)+CHCl_(3)+ak.KOH overset(Delta)to underset("Methylisocynide (Foul smelline)")(CH_(3)NC+3KCl+3H_(2)O)` |
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| 145. |
Write the IUPAC names of the following compounds. `PhCH_(2)CN` |
| Answer» `PhCH_(2)CN" " underset("(Benzyl cyanide)")("Phenyl Ethane nitrile")` | |
| 146. |
The correct order of increasing basic nature of the following bases is: A. `2 lt 2 lt 1 lt 3 lt 4`B. `2 lt 5 lt 1 lt 4 lt 3`C. `5 lt 2 lt 1 lt 4 lt 3`D. `2 lt 5 lt 4 lt 3 lt 1` |
| Answer» Correct Answer - A | |
| 147. |
Which one of the following is most basic?A. `FCH_(2)NH_(2)`B. `FCH_(2)CH_(2)NH_(2)`C. `C_(6)H_(5)NH_(2)`D. `C_(6)H_(5)CH_(2)NH_(2)` |
| Answer» Correct Answer - D | |
| 148. |
Which one of the following can be prepared by Gabriel phtahlimide synthesis?A. AnilineB. o-ToluidineC. benzylamineD. N-Methylethanamine |
| Answer» Correct Answer - C | |
| 149. |
The correct order of basic nature is aqueous solution is:A. `C_(6)H_(5)NH_(2) gt NH_(3) gt CH_(3)NH_(2) gt (CH_(3))_(2)NH`B. `NH_(3) gt C_(6)H_(5)NH_(2) gt CH_(3)NH_(2) gt (CH_(3))_(2)NH`C. `(CH_(3))_(2)NH gt CH_(3)NH_(2) gt NH_(3) gt C_(6)H_(5)NH_(2) `D. ` CH_(3)NH_(2) gt (CH_(3))_(2)NH gt NH_(3) gt C_(6)H_(5)NH_(2) ` |
| Answer» Correct Answer - C | |
| 150. |
Secondary amines could be prepared byA. reduction of nitrilesB. reduction of amidesC. reduction of nitro compoundsD. reduction of isonitriles |
| Answer» Correct Answer - D | |