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.
| 301. |
`Bu-C-=CHoverset(NaNH_(2))rightarrowoverset(ph-CHO)underset(H_(2)O)rightarrowoverset(MnO_(2))rightarrowX`A. B. C. D. |
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Answer» Correct Answer - 4 `Bu-C-=CN a , Nu^(-)` addition to aldehyde group followed by oxidation to form ketone. `SeO_(2)` oxidises ` alpha` - position in carbonyl compounds to `(C=O)` group. |
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| 302. |
Salicylaldehyde is extracted fromA. Meadow sweetB. Meadow sweetC. Vanilla beansD. Cinnamon |
| Answer» Correct Answer - 1 | |
| 303. |
Formalin is:A. `40%`B. `10%`C. `20%`D. `5%` |
| Answer» Correct Answer - `1` | |
| 304. |
Which one of the following is reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon?A. Ethyl acetateB. Acetic acidC. AcetamideD. Butan -2- one |
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Answer» Correct Answer - 4 Only aldehydes and ketones |
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| 305. |
Which of the following does not given iodoform test :A. 2- pentanoneB. 3- pentanoneC. ethanalD. etanol |
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Answer» Correct Answer - 2 There is no `CH_(3)CO` group. |
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| 306. |
m-chlorobenzaldehyde on reaction with conc. KOH at room temperature gives :A. Potassium m-chlorobenzoate and m-hydroxybenzaldehydesB. m-hydroxybenzaldehyde and m-chlorobenzyl alcoholC. m-chlorobenzyl and m-hydrozybenzyl alcoholD. potassium m-chlorobenzoate and m-chlrobenzyl alcohol. |
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Answer» Correct Answer - D It is cannizaro reaction. |
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| 307. |
If `3-` hexanone is reacted with `NaBH_(4)` followed by hydrolysis with `D_(2)O` , the product will be `:`A. `CH_(3) CH_(2)CH(OH)CH_(2)CH_(2)CH_(3)`B. `CH_(3)CH_(2)CH(OHCH_(2)CH_(2)CH_(3)`C. `CH_(3)CH_(2)CH(OD)CH_(2)CH_(2)CH_(3)`D. `CH_(3)CH_(2)CD(OD)CH_(2)CH_(2)CH_(3)` |
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Answer» Correct Answer - 3 `H^(-)` from `NaBH_(4)` & `OD^(-)` from `D_(2)O` are added to ' `-overset(O)overset(||)C-` ' group |
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| 308. |
Examine the structural formulas of compounds given below and identify number of compounds which show positive iodoform test. |
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Answer» Correct Answer - 6 |
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| 309. |
Examine the structural formulas given below and identify number of compounds which are reduced by `NaBH_(4)`. |
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Answer» Correct Answer - 5 |
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| 310. |
The reaction of `C_(6)H_(5)CH=CHCHO` with `NaBH_(4)` gives:A. `C_(6)H_(5)CH_(2)CH_(2)CH_(2)OH`B. `C_(6)H_(5)CH=CHCH_(2)OH`C. `C_(6)H_(5)CH_(2)CH_(2)CHO`D. `C_(6)H_(5)CH_(2)CHOHCH_(3)` |
| Answer» Correct Answer - B | |
| 311. |
Give the correct sequence of reagents for the following conversion : A. B. C. D. |
| Answer» Correct Answer - A | |
| 312. |
Which of the following sets of reagents is the most appropriate to perform the above conversion ?A. `HIO_(4),overset(Ө)OH,Zn-Hg//HCl`B. Cold `KMnO_(4),Pb(OAc)_(4),overset(Ө)OH,Li//NH_(3)`C. `O_(3)//Me_(2)S,overset(Ө)OH,Li//NH_(3)`D. `KMnO_(4),overset(Ө)OH//Delta,N_(2)H_(4)//overset(Ө)OH,Delta` |
| Answer» Correct Answer - D | |
| 313. |
Identify the reagents that can perform this conversion successfully :A. `H_(2)`, Raney Ni, `Delta`B. `Mg. THF, H_(2)O`C. `NaBH_(4), H_(2)O`D. `H-overset(O)overset(||)C-H,O^(Ө)H` |
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Answer» Correct Answer - C::D |
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| 314. |
An organic compound having molecular mass 60 is found to be contain C=20%., H=6.67 % and N=46.67% while rest is oxygen. On heating it gives `NH_(3)` along with a solid residue. The solid residue give violet colour with alkaline copper sulphate solution. the compound isA. `CH_(3)CH_(2)CONH_(2)`B. `(NH_(2))_(2)CO`C. `CH_(3)CONH_(2)`D. `CH_(3)NCO` |
| Answer» Correct Answer - B | |
| 315. |
Consider the sturcture of given alcohol, this alcohol can be prepared from: `C_(6)H_(5)-underset(C_(2)H_(5))underset(|)overset(OH)overset(|)C-CH_(3)`A. `C_(6)H_(5)-overset(O)overset(||)CH_(3)` and `C_(2)H_(5)MgBr`B. `CH_(3)-CH_(2)-overset(O)overset(||)C-CH_(3)` and `C_(6)H_(5)MgBr`C. `C_(6)H_(5)-overset(O)overset(||)C-C_(2)H_(5)` and `CH_(3)MgBr`D. all of the above |
| Answer» Correct Answer - D | |
| 316. |
In the reactin sequence `C_(6)H_(5)-underset(O)underset(||)C-CH_(3)overset(NH_(2)OH//H^(o+))rarr[X]overset(PCl_(5))rarr[Y],[Y]` will be :A. `C_(6)H_(5)-overset(O)overset(||)C-NHCH_(3)`B. `CH_(3)-overset(O)overset(||)C-NH-C_(6)H_(5)`C. `C_(6)H_(5)-CH_(2)-Coverset(O)overset(||)C-NH_(2)`D. Mixture of (a) and (b) |
| Answer» Correct Answer - D | |
| 317. |
Under Wolff Kishner reduction conditions, the conversions which may be brought about isA. Benzaldehyde into benzyl alcoholB. Cyclohexanol into cyclohexaneC. Cyclohexanone into cyclohexanolD. Benzophenone into Diphenylmethane |
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Answer» Correct Answer - D In wolf-Kishber reduction carbonyl compound is converted to hydrocarbon. |
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| 318. |
Cross Cannizzaro reaction is an example of :A. redox reactionB. disproportionaltionC. both (A) and (B)D. oxidation |
| Answer» Correct Answer - A | |
| 319. |
In the reaction X and Y may be :A. PCC and `Ph_(3)P=CH_(2)`B. PDC and `Ph_(3)P=CH_(2)`C. PCC and `Ph_(3)P=CH-CH_(3)`D. PCC and `Me_(2)S=CH_(2)` |
| Answer» Correct Answer - B::D | |
| 320. |
Which of the following compounds exhibit acid base reaction with NaOH ?A. B. C. D. |
| Answer» Correct Answer - B::C::D | |
| 321. |
Which of the following compounds will give a yellow precipitate with iodine and alkali ?A. Isopropyl alcoholB. Acetophenone, AcetaldehydeC. BenzophanoneD. 3- pentanone |
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Answer» Correct Answer - (A,B) Alcohols with `CH_(3)-overset(OH)overset(|)(CH)-` undergoes Iodoform test Among Carbonyls `toCH_(3)-overset(O)overset(||)(C)-` group undergoes Iodoform |
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| 322. |
Which of the following compounds can be synthesized by intramolecular aldol condensation in very good yield ?A. B. C. D. |
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Answer» Correct Answer - A::D |
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| 323. |
Which of the following yield yellow precipitate on reaction with `I_(2)` and NaOH ?A. B. C. `Ph-overset(Ph)overset(|)underset(Ph)underset(|)(C)-overset(O)overset(||)(C)-CH_(3)`D. |
| Answer» Correct Answer - A::B::D | |
| 324. |
A compound gives a positive test with `I_(2)//NaOH` and is extracted from benzene by saturated `NaHSO_(3)` . It may be :A. `CH_(3)(CH_(2))_(4)CHO`B. `CH_(3)(CH_(2))_(3)COCH_(3)`C. `CH_(3)CH_(2)COCH_(2)CH_(3)`D. `(CH_(2))_(4)CH_(2)OH` |
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Answer» Correct Answer - 2 Methyl ketone give positive `NaHSO_(3)` test (acidic) |
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| 325. |
Which of the following compounds does not react with `NaHSO_(3)`?A. `C_(6)H_(5)CHO`B. `C_(6)H_(5)COCH_(3)`C. `CH_(3)COCH_(3)`D. `C_(2)H_(5)COC_(2)H_(5)` |
| Answer» Correct Answer - D | |
| 326. |
Which of the following compounds will react faster than with `CH_(3)MgBr` ?A. B. `CH_(3)-overset(O)overset(||)C-H`C. `CH_(3)-overset(O)overset(||)C-overset(..)NH_(2)`D. `CH_(3)-overset(O)overset(||)C-Cl` |
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Answer» Correct Answer - B::D |
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| 327. |
Which of the following compounds not react with sodium bisulphiteA. BenzaldehydeB. AcetoneC. AcetophenoneD. Acetaldehyde |
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Answer» Correct Answer - 3 Only acetophenone doesnot form adduct due to steric effect |
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| 328. |
Treatment of benzene with CO/HCl in the presence of anhydrous `"AlCl"_(3)//"CuCl" ` followed by reaction with `Ac_(2)"O"//"NaOAc"` gives compound X as the major product. Compound X upon reaction with `Br_(2)//Na_(2)CO_(3)`, followed by heating at 473 K with moist KOH furnishes Y as the major product. Reaction of X with `H_(2)//Pd-C`, followed by `H_(3)PO_(4)` treatment gives Z as the major product. The compound Y isA. B. C. D. |
| Answer» Correct Answer - C | |
| 329. |
Which of them liberate a gas which turns lime water milky .A. B. `{:(CH_(3)-CH-COOH),(" |"),(" "COOH):} overset(Delta)to`C. `HOOC -(CH_(2))_(5)-COOH overset(Ca(OH)_(2)//Delta)to`D. |
| Answer» Correct Answer - A::B::C | |
| 330. |
Choose the correct option A. B. C. D. |
| Answer» Correct Answer - A::B::D | |
| 331. |
Alldehydes and Ketones react with `NH_(2)OH` to form aldoximes and Ketoximes respectively. Configuration of these can be determined by Beckmann rearragement as that group migrates which is anti w.r.t -OH Which step is Rate determening step ?A. IB. IIC. IIID. IV |
| Answer» Correct Answer - B | |
| 332. |
Which of the following compounds have higher enolic content than keto contentA. `CH_(3)-overset(O)overset("||")(C)-overset(O)overset("||")(C)-CH_(3)`B. C. D. |
| Answer» Correct Answer - B | |
| 333. |
acetaldehyde reacts with a mixture of KCN and `NH_(4)Cl` to give a product X which upon hydrolysis yields alanine. The products X isA. an aminonitrileB. a cyanohydrinC. an aminoalcoholD. a chlorohydrin |
| Answer» Correct Answer - A | |
| 334. |
The molecular formula of acetaldehyde semicarbazone isA. `CH_(3)-CH=N-CO-NH-NH_(2)`B. `CH_(3)- CH=N-NH-CONH_(2)`C. `CH_(3)-CH=N-OH`D. `CH_(3)-CH=N-NH_(2)` |
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Answer» Correct Answer - 2 `CH_(3)-overset(OH)overset(|)C=O+H_(2)N-NH-CO-NH_(2)toCH_(3)-CH=N-NH-CO-NH_(2)` |
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| 335. |
Oxime is the product of the followingA. `gtC=O+` hydrazineB. `gtC=O+` PhenyldhydrazineC. `-overset(O)overset(||)(C)overset(C-OH+SOCl_(2))`D. `gtCO+` Hydroxylamine |
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Answer» Correct Answer - 4 Carbonyl compound + `NH_(2)OH to` oxime |
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