InterviewSolution
Saved Bookmarks
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. |
The typical reaction of benzene and other aromatic compounds are electrophilic substitution. Presence of electron donating group activates the ring towards electrophilic substitution, while presence of electron withdrawing group deactivates the ring towards electrophilic substituion but at the same time activates the ring towards nucleophilic subsituion. Some groups are predominantly meta-directing and all of these are deactivating. Except halogen, most of the `o-`and`p-`directing groups are activating groups. `underset(Delta)overset(C_(2)H_(5)Cl.AlCl_(3))rarr(A)` major. `A` is trisubstituted benzene. The structure of `A` is :A. B. C. D. |
| Answer» Correct Answer - B | |
| 102. |
Sulfonation differs from most of electrophilic aromatic substitution reactions with the fact that the reaction-A. Is reversibleB. requires Lewis acid as catalystC. is explosiveD. takes place at high temperature |
| Answer» Correct Answer - A | |
| 103. |
`C_(2)H_(5)OHoverset(PCl_(5))rarr(A)overset(KCN)rarr(B)overset(H_(3)O^(+))rarr(C)overset(NH_(3))rarr(D)overset("heat")rarr(E)` |
|
Answer» Correct Answer - (A) `C_(2)H_(5)CL`; (B) `C_(2)H_(5)CN`; (C) `C_(2)H_(5)COOH`; (D) `C_(2)H_(5)COONH_(4)`; (E) `C_(2)H_(5)CONH_(2)` |
|
| 104. |
In the reaction sequence :- `Aoverset(SnCl_(2)//HCl)rarrBunderset(0^(@))overset(NaNO_(2)//HVl)rarrCoverset(H_(2)O //Delta)rarrC_(6)H_(5)OH`, A,B and C are :-234A. Benzene, nitrobenzene, anilineB. Nitrobenzene, aniline and azo-compoundC. Nitrobenzenen, benzenen, anineD. Benznene, amino compound, aniline |
| Answer» Correct Answer - B | |
| 105. |
In the following reactoins The major compound Y isA. B. C. D. |
| Answer» Correct Answer - D | |
| 106. |
The major product of the following reaction sequence is : A. B. C. D. |
| Answer» Correct Answer - A | |
| 107. |
The major product of nitration of Benzoic acid is -A. 3-Nitrobenzoic acidB. 4-Nitrobenzoic acidC. 2-Nitrobenzoic acidD. 2,4-dintrobenzoic acid |
| Answer» Correct Answer - A | |
| 108. |
Which of the following is an `o-, p-`directing but deactivating substituent in an electrophilic aromatic substitution :A. `-C Cl_(3)`B. `-Cl`C. `-NHCOCH_(3)`D. `-OCH_(3)` |
| Answer» Correct Answer - B | |
| 109. |
The treatment of `CH_(3)CH_(2)COOH` with chlorine in the presence of phosphorus gives:A. `CH_(3)CH_(2)COCH_(3)`B. `CH_(3)CH_(2)CH_(2)Cl`C. `CH_(3)CH(Cl)COOH`D. `ClCH_(2)CH_(2)COOH` |
| Answer» Correct Answer - C | |
| 110. |
The end product of the reaction, Ethyl amine `overset(HNO_(2))rarr(A)overset(PCl_(5))rarr(B)overset(KCN)rarr(C )` `(C)` is,A. Ethyl cyanideB. Ethyl amineC. Methyl amineD. Acetamide |
| Answer» Correct Answer - B | |
| 111. |
In the reaction the major product formed is : A. B. C. D. |
| Answer» Correct Answer - D | |
| 112. |
`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. `KBr`B. `KBr+CH_(3)Ona`C. `KBr+KOH`D. `Br_(2)+KOH` |
| Answer» Correct Answer - D | |
| 113. |
The major product formed in the reaction is : `+(CH_(3))_(2) CHCH_(4)Brunderset(Delta)overset(AlCl_(3))rarr`A. B. C. D. |
| Answer» Correct Answer - D | |
| 114. |
`underset(Fe)overset(Br_(2))rarr` ? Major product in this reaction is :A. B. C. D. |
| Answer» Correct Answer - D | |
| 115. |
Give reason: |
|
Answer» Correct Answer - (a) (i)- NO is ortho and perat director. (ii)-`NO_(2)` is meta director. (b) due to high reasonence energy of the product |
|
| 116. |
Among the following reactions (s), which gives (give) tert-butyl benzene as the major product?A. B. C. D. |
| Answer» Correct Answer - B::C::D | |
| 117. |
The treatment of `CH_(3)MgX` with `CH_(3)-C-=C-H` producesA. `CH_(3)-CH=CH_(2)`B. `CH_(3)C-=C-CH_(3)`C. `CH_(3)-overset(H)overset(|)C=overset(H)overset(|)C-CH_(3)`D. `CH_(4)` |
| Answer» Correct Answer - D | |
| 118. |
The major product formed in the reaction is : `+HNO_(3)overset("conc."H_(2)SO_(4))rarr`A. B. C. D. |
| Answer» Correct Answer - B | |
| 119. |
`+Cl-CH_(2)CH_(2)CH_(3)overset(AlCl_(3))(rarr) P underset((ii)H_(2)O)overset((i)O_(2)//Delta)(rarr)Q+` Phenol The major products P and Q are `:`A. and `CH_(3)CH_(2)CHO`B. and `CH_(3)COCH_(3)`C. and `CH_(3)COCH_(3)`D. and `CH_(3)CH_(2)CHO` |
| Answer» Correct Answer - C | |
| 120. |
The main product of the following reaction is `C_(6)H_(5)CH_(2)(OH)CH(CH_(3))_(2)overset(Conc.H_(2)SO_(4))rarr`? |
| Answer» Correct Answer - `C_(6)H_(6)+(CH_(3))_(2)CH,CH_(2)Ohoverset(H_(2)SO_(4))rarr` | |
| 121. |
The main product of the following reaction is `C_(6)H_(5)CH_(2)CH(OH)CH(CH_(3))_(2)overset("conc."H_(2)SO_(4))rarr`?A. B. C. D. |
| Answer» Correct Answer - B | |
| 122. |
Consider the following reaction. `CH_(3)overset(O^(16))overset(||)C-O^(18)-C_(2)H_(5)+H_(2)O^(16)underset("Heat")overset(H^(+))rarr` The products formed in the reaction areA. `CH_(3)-overset(O^(16))overset(||)C-O^(16)=H` and `C_(2)H_(5)O^(18)H`B. `CH_(3)-overset(O^(16))overset(||)C-O^(18)-H` and `C_(2)H_(5)O^(16)H`C. `CH_(3)-overset(O^(16))overset(||)-O^(16)H` and `C_(2)H_(5)O^(16)H`D. `CH_(3)-overset(O^(18))overset(||)C-O^(18)-H` and `C_(2)H^(5)O^(18)H` |
| Answer» Correct Answer - A | |
| 123. |
When benzamide is treated with `POCl_(3)` the product isA. BenzonitrileB. AnilineC. ChlorobenzeneD. Benzylamine |
| Answer» Correct Answer - A | |
| 124. |
The correct order of basicities of the following compounds is - (I) , (II) `CH_(3)CH_(2)NH_(2)` : (III) `(CH_(3))_(2)NH` , (IV) `CH_(3)-overset(O)overset(||)C-NH_(2))`A. `IIgtIgtIIIgtIV`B. `IgtIIIgtIIgtIV`C. `IIIgtIgtIIgtIV`D. `IgtIIgtIIIgtIV` |
| Answer» Correct Answer - B | |
| 125. |
The products formed in the reaction are : `C_(6)H_(5)-overset(O)overset(||)C-OH+CH_(3)overset(18)OHunderset("Heat")overset(H_(2)SO_(4))rarr`A. `C_(6)H_(5)-overset(O)overset(||)C-overset(18)OCH_(3)` and `H_(2)O`B. `C_(6)H_(5)-overset(O)overset(||)C-OCH_(3)` and `H_(2)overset(18)O`C. `C_(6)H_(5)-overset(O)overset(||)C-CH_(2)overset(18)OH` and `H_(2)O`D. `C_(6)H_(5)overset(18)OCH_(3),CO` and `H_(2)O` |
| Answer» Correct Answer - A | |
| 126. |
Aryl halides are less reactive towards nucleophilic substitution reaction as compared to alkyl halides due toA. The formation of less stable carbonium ionB. Resonance stablizationC. Longer carbon halogen bondD. The inductive effect |
| Answer» Correct Answer - B | |
| 127. |
Which of the following carboxylic acids undergoes decarboxylation easil?A. `C_(6)H_(5)COCH_(2)COOH`B. `C_(6)H_(5)COCOOH`C. `C_(6)H_(5)underset(OH)underset(OH)underset(|)CH-COOH`D. `C_(6)H_(5)underset(NH_(2))underset(|)CHCOOH` |
| Answer» Correct Answer - A | |
| 128. |
On mixing ethyl acetate with aqueous sodium chloride, the composition of the resultant solution isA. `CH_(3)COOC_(2)H_(5)+NaCl`B. `CH_(3)COONa+C_(2)H_(5)OH`C. `CH_(3)COCl+C_(2)H_(5)OH+NaOH`D. `CH_(3)Cl+C_(2)H_(5)COONa` |
| Answer» Correct Answer - B | |
| 129. |
In the reaction the product (B) is:A. B. C. D. |
| Answer» Correct Answer - B | |
| 130. |
`CH_(3)CH_(2)CO OHunderset("Red P")overset(Br_(2))to[X]overset(NH_(3)(alc.))to[Y]` [Y] in the above reactions isA. Lactic acidB. EthylamineC. PropylamineD. Alanine |
| Answer» Correct Answer - D | |
| 131. |
Consider the following reaction sequence, `CH_(3)C-= CH overset(aq.H_(2)SO_(4))underset(H_(2)SO_(4))rarr A overset(PCI_(5))underset(Heat)rarrB` The products `(A)` and `(B)` are, respectively,A. `CH_(3)CH_(2)` and `CH_(3)CH_(2)Cl`B. `CH_(3)CHO` and `CH_(3)CHCl_(2)`C. `CH_(2)OH CH_(2)OH` and `CH_(2)ClCH_(2)Cl`D. `CH_(2)OHCH_(2)OH` and `CH_(2)OHCH_(2)Cl` |
| Answer» Correct Answer - C | |
| 132. |
The reactivities of acid halides (I), anhydrides (II),esters(III) and amides (IV) with nucleophilic reagents follow the orderA. `IgtIIgtIIIgtIV`B. `IVgtIIIgtIIgtI`C. `IgtIIIgtIIgtIV`D. `IIIgtIIgtIgtIV` |
| Answer» Correct Answer - A | |
| 133. |
In the following sequence of reactions, the alkene affords the compound `B`: `CH_(3)CH=CHCH_(3)overset(O_(3))rarrAunderset(Zn)overset(H_(2)O)rarrB` The compound `B` isA. `CH_(3)CH_(2)CHO`B. `CH_(3)COCH_(3)`C. `CH_(3)CH_(2)COCH_(3)`D. `CH_(3)CHO` |
| Answer» Correct Answer - D | |
| 134. |
The final product in the reaction is : `Ph-OH+C Cl_(4)overset(KOH)rarr` productA. Salicyl aldehydeB. Salicylic acidC. Methyl salicylateD. benzyl chloride |
| Answer» Correct Answer - B | |
| 135. |
`CH_(3) CH_(2) COOH overset (Cl_(2)) underset (Red P) to (A) overset (Alc. KOH) to (B)` What is (B)?A. `CH_(3)underset(OH)CHCOOH`B. `underset(OH)underset(|)CH_(2)CH_(2)COOH`C. `CH_(2)=CHCOOH`D. `underset(Cl)underset(|)CH_(2)underset(OH)underset(|)CH-COOH` |
| Answer» Correct Answer - C | |
| 136. |
`R-CH_(2)-C Cl_(2)-R overset(Reag ent)rarrR-C-=C-R` The reagent isA. `Na`B. `HCl` in `H_(2)O`C. `KOH` in `C_(2)H_(5)OH`D. `Zn` in alcohol. |
|
Answer» Correct Answer - C Alcoholic `KOH` brings about dehyrohiogenation |
|
| 137. |
`underset(FeBr_(2))overset(Br_(2))rarrA` (Major product), then the major product `A` is -A. B. C. D. |
| Answer» Correct Answer - A | |
| 138. |
Consider the following reaction sequence `CH_(3)C-=Chunderset(" 2 mole")overset(HCl)rarrAunderset("Heat")overset(aq. KOH)rarrB` The products (A) and (B) are, respectively,A. `CH_(3)CH_(2)CHCl_(2)` and `CH_(3)CH_(2)CHO`B. `CH_(3)C Cl_(2)CH_(3)` and `CH_(3)COCH_(3)`C. `CH_(3)C Cl_(2)CH_(3)` and `CH_(3)-=CH`D. `CH_(3)CHCICH_(2)Cl` and `CH_(3)CHOHCH_(2)OH` |
| Answer» Correct Answer - B | |
| 139. |
In the following sequence of reaction `CH_(3)CH_(2)COCloverset(AlCl_(3))rarrAunderset("conc."HCl,"Heat")overset(Zn(Hg))rarrB` the product B is :A. `PhCOCH_(2)CH_(3)`B. `PhCHOHCH_(2)CH_(3)`C. `PhCH_(2)CH_(2)CH_(3)`D. `PhCH=CHCH_(3)` |
| Answer» Correct Answer - C | |
| 140. |
What is the final product (B) of this sequence : `underset("light")overset(Br_(2))rarrAunderset(2.H_(3)O^(+)"Heat")overset(1.KCN)rarrB`A. B. C. D. |
| Answer» Correct Answer - D | |
| 141. |
Toluene may be prepared by :A. Toluic acidB. CresolC. Toluene sulphoric acidD. All the above |
|
Answer» Correct Answer - D Toluene may be prepared by all the above compounds described earlier. |
|
| 142. |
`CH_(3)CH_(2)CONH_(2)underset(Br_(2))overset(NaOH)rarrA` Aqueous solution of AA. Turns blue litmus to redB. Turns red litmus to blueC. Does not affect the litmusD. Decolourise the litmus |
| Answer» Correct Answer - B | |
| 143. |
`overset("Electrolysis")rarrA A is :-A. B. C. D. |
| Answer» Correct Answer - D | |
| 144. |
Consider the folloing reaction. `underset(2.H_(3)O^(+))overset(1. B_(2)H_(6), THF)rarrA` The product (A) isA. B. C. D. |
| Answer» Correct Answer - A | |
| 145. |
Which of the following compounds undergo periodic oxidationA. B. C. D. |
| Answer» Correct Answer - A::B::C | |
| 146. |
`phi-CH_(3)underset(Delta)overset(KMnO_(4))rarrAunderset(Delta)overset("Soda Lime")rarrB` Compound `B` is :A. TolueneB. BenzeneC. CresolD. Benzaldehyde |
| Answer» Correct Answer - B | |
| 147. |
`overset(OH^(-))rarrA,A` is :-A. B. C. D. None |
| Answer» Correct Answer - B | |
| 148. |
Aldehydes and ketones are amphoteric. Thus they can act both as acids and bases. Under acidic conditions, the carbon of the protonated canbonyl group is much more electrophilic, reacting even with weak nucleopphilie. Carbonyl compound gives nucleophilic addition reaction. In this reaction the nucleophilic attack proceeds the elecrophilic attack. Which of the statements are//is correct?A. The rate determining step of addition reaction is the addition of nucleophileB. The rate-determining step is addition of electrophileC. The reaction intermeidate of the reaction is alkoxide ionD. both (A) and (C ) |
| Answer» Correct Answer - D | |
| 149. |
In the reaction sequence, [X] is ketone : `[X] overset(KMnO_(4)//OH^(-)//Delta)rarrHOOC(CH_(2))_(3)-overset(CH_(3))overset(|)CH-COOH` [X] will be :-A. B. C. D. |
| Answer» Correct Answer - B | |
| 150. |
Which of the following has the most acidic hydrogen ?A. 3-hexanoneB. 2,4-hexanedioneC. 2,5-hexanedioneD. 2,3-hexandcione |
| Answer» Correct Answer - B | |