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. |
Which one of the following ester gets hydrolysed most easily under alkaline conditionsA. B. C. D. |
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Answer» Correct Answer - A In basic medium rate of hydrolysis increases with electron withdrawing group (-M effect predominates) |
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| 2. |
An alkyl amine is prepared by the following reaction- `RCOOH+N_(3)H overset("Conc".H_(2)So_(4))rarr RNH_(2)+C0_(2)+N_(2)` Name of the above reaction is:A. Lossen reactionB. Schmidt reactionC. Curtius reactionD. Ullmann reaction |
| Answer» Correct Answer - B | |
| 3. |
Lactic acid on oxidation by alkaline potassium permanganate givesA. Tartaric acidB. Pyruvic acidC. Cinnamic acidD. Propionic acid |
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Answer» Correct Answer - B `CH_(3)-underset("Lactic acid")(CHOH)-COOH+[O] overset(KMnO_(4))to underset("Pyruvic acid")(CH_(3)-CO-COOH+H_(2)O)` |
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| 4. |
Primary aldehyde on oxidation givesA. EstersB. Carboxylic acidC. KetonesD. Alcohols |
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Answer» Correct Answer - B Aldehydes are easily oxidised to carboxylic acids on treatment with common oxidising agents like nitric acid, potassium permanganate and dichromate etc. |
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| 5. |
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. `RCONHBr`B. `RNHBr`C. `R-N=C=O`D. `ROCONBr_(2)` |
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Answer» Correct Answer - A::C |
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| 6. |
Which of the following is the correct order of decarboxylation of `beta`-keto carboxylate anion? A. `a gt b gt c gt d`B. `c gt d gt a gt b`C. `c gt d gt b gt a`D. `d gt c gt a gt b` |
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Answer» Correct Answer - C Rate determing step is formation of carbanion, more the stable carbanion more is the rate of reaction. `c gt d gt b gt a` b has more rate of reaction because of d-orbital resonance of chlorine. |
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| 7. |
Which of the following undergoes decarboxylation most readily on being heated?A. D. |
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Answer» Correct Answer - D `beta`-keto acid will easily undergo de-carboxylation on heating. |
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| 8. |
Statement 1 : Lower acids on reacting with strong electropositive metals give effervescence of `H_2`. `CH_3 COOC_4 H_9` hydrolyses rapidly than `CH_3 COOCH_3`.A. If both assertion and reason are true and the reason is the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertionC. If assertion is true but reason is false.D. If the assertioin and reason both are false. |
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Answer» Correct Answer - C Larger is the size of alkyl group of ester, greater is the steric effect and thus lesser will be rate of hydrolysis. `CH_(3)-underset(OCH_(3))underset(|)overset(O)overset(||)(C)+OH^(-) underset(fast)toCH_(3)- underset(OCH_(3))overset(|)overset(overset(ө)(O))overset(|)(C)-OH overset(H^(+))toCH_(3)COOH+CH_(3)OH` `CH_(3)-underset(OC_(4)H_(9))underset(|) overset(O)overset(||)(C)+ Ooverline(H)overset("slow")to CH_(3)COOH+C_(4)H_(9)OH` |
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| 9. |
The product obtained when acetic acid is treated with phosphorus trichloride isA. `CH_(3)COOPCl_(3)`B. `CH_(3)COOCl`C. `CH_(3)COCl`D. `ClCH_(2)COOH` |
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Answer» Correct Answer - C `3CH_(3)COOH+PCl_(3)toH_(3)PO_(3)+3CH_(3)COCl` |
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| 10. |
In the reaction, `CH_(3)COOH overset(LiAlH_(4))to(A) overset(I_(2)+NaOH)to (B) overset("Ag(dust)")to(C)` The final product (C) is:-A. `C_(2)H_(5)I`B. `C_(2)H_(5)OH`C. `C_(2)H_(2)`D. `CH_(3)COCH_(3)` |
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Answer» Correct Answer - C `CH_(3)COOH overset(LiAlH_(4))toCH_(3)CH_(2)OH overset(I_(2)//NaOH)toCHI_(3) overset(Ag)toC_(2)H_(5)` |
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| 11. |
Which class of compounds shows H-bonding even more than in alcoholsA. PhenolsB. Carboxylic acidsC. EthersD. Aldehydes |
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Answer» Correct Answer - B Forms H-bonding by means of two highly electronegative atoms present in it. |
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| 12. |
Wax are long chain compounds belonging to the classA. AcidsB. AlcoholsC. EstersD. Ethers |
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Answer» Correct Answer - C Eax are long chain ester. |
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| 13. |
An organic acid (X) has molecular formula `C_(8)H_(16)O_(2^.)` X on heating with `NH_(3)` forms Y which on treatrmentr with alkaline `Br_(2)` from Z.Z on treatament with `HNO_(2)` followed by with `H_(2)SO_(4)` gives 2,4- dimethyl l-2 pentene. How many different acids (X) can give the indicated final product? |
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Answer» Correct Answer - A |
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| 14. |
The formula `(RCO)_(2)O` represents:A. An esterB. A ketoneC. An etherD. An acid anhydride |
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Answer» Correct Answer - D `2RCOOH overset(-H_(2)O)to underset("Acid anhydride")((RCO)_(2))O` |
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| 15. |
Which of the following is the formula of tartaremeticA. `{:(,,CH(OH)COOH),(,," |"),(,,CH(OH)COOK):}`B. `{:(,CH(OH)COOK),(,"|"),(,CH(OH)COO(SbO)):}`C. `{:(,CH(OH)COOK),(," |"),(,CH(OH)COOK):}`D. `{:(,CH(OH)COOK),(," |"),(,CH(OH)COONa):}` |
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Answer» Correct Answer - B Tartaremetic (i.e., potassium antiomony (+) tartrate) i.e., `{:(,CH(OH)COOK),(,"|"),(,CH(OH)COO(SbO)):}` is used as an emetic, i.e., to cause housed and vomiting during treatment of poisoning. |
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| 16. |
Laboratory method for the preparation of acetyl chloride isA. `CH_(3)COOH+SOCl_(2)toCH_(3)COCl`B. `CH_(3)COOH+PCl_(3)toCH_(3)COCl`C. `CH_(3)COONa+PCl_(3)toCH_(3)COCl`D. All of these |
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Answer» Correct Answer - A In laboratory it is prepared by `SOCl_(2)` because byproduct `SO_(2) and HCl` are gases which can easily escape and leave behind `CH_(3)COCl` as a residue. `CH_(3)COOH+SOCl_(2)toCH_(3)COCl+HCl uarr+SO_(2)uarr` |
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| 17. |
Glycerol is oxidised by bismuth nitrate to produceA. Glyceric acidB. Glyoxalic acidC. Oxalic acidD. Meso oxalic acid |
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Answer» Correct Answer - D `{:(,CH_(2)OH),(,"|"),(,underset("Glycerol")(CH_(2)OH)):}underset("Bismuth nitrate")overset([O])to underset("Meso oxalic acid")({:(,COOH),(,"|"),(,COOH):}` Thus, glycerol produce meso-oxalic acid. |
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| 18. |
A liquid was mixed with ethanol and a drop of concentrated `H_(2) SO_(4)` was added. A compound with a fruity smell was formed. The liquid wasA. `CH_(3)OH`B. `HCHO`C. `CH_(3)COCH_(3)`D. `CH_(3)COOH` |
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Answer» Correct Answer - D `CH_(3)COOH+C_(2)H_(5)OH overset(H_(2)SO_(4))to underset("Ester (Fruity smell)")(CH_(3)COOC_(2)H_(5))+H_(2)O` |
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| 19. |
Ammonium acetate reacts with acetic acid at `110^(@)C` to formA. AcetamideB. FormamideC. Ammonium cyanateD. Urea |
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Answer» Correct Answer - A `underset("Ammonium acetate")(CH_(3)COONH_(4))+CH_(3)COOH overset(110^(@)C)tounderset("Acetamide")(CH_(3)CONH_(2))+H_(2)O` |
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| 20. |
The "saponification value" of an oil or fat is measured in term ofA. `NH_(4)OH`B. `NaOH`C. KOHD. `C_(6)H_(5)OH` |
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Answer» Correct Answer - C Saponifiction value is the number of milligrams of KOH required to neutralise the fatty acid resulting from the complete hydrolysis of 1 g of oil or fat. |
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| 21. |
The product D of the reaction `CH_(3)Cloverset(KCN)to(A)overset(H_(2)O)to(B)overset(NH_(3))to(C)overset(Delta)to(D)` isA. `CH_(3)CH_(2)NH_(2)`B. `CH_(3)CN`C. `HCONH_(2)`D. `CH_(3)CONH_(2)` |
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Answer» Correct Answer - D `CH_(3)Cl underset(-KCl) overset(KCN)toCH_(3)CN overset(H_(2)O)toCH_(3)COOH overset(NH_(3))toCH_(3)COONH_(4) overset(Delta)toCH_(3)CONH_(2)` |
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| 22. |
`CH_(3)CH_(2)CONH_(2)overset(X)to CH_(3)CH_(2)CH_(2)NH_(2)` X is:A. `Pt//H_(2)`B. `Ni//H_(2)`C. `LiAlH_(4)`D. `Zn` |
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Answer» Correct Answer - C `underset("propanomide")(CH_(3)CH_(2)-)overset(O)overset(||)(C)-NH_(2)+4[H] overset(LiAlH_(4))to underset("propylamine")(CH_(3)CH_(2)CH_(2)NH_(2))` |
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| 23. |
Hydrolysis of `CH_(3)CH_(2)NO_(2)` with 85% `H_(2)SO_(4)` givesA. `CH_(3)CH_(2)OH`B. `C_(2)H_(6)`C. `CH_(3)CH=NOH`D. `CH_(3)COOH` |
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Answer» Correct Answer - D `CH_(3)CH_(2)NO_(2)+H_(2)O overset(H_(2)SO_(4))toCH_(3)COOH+NH_(2)OH` |
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| 24. |
P and Q are isomer of dicraboxylic acid `C_(4)H_(4)O_(4)` Both decolourixe `Br_(2)//H_(2)O`. On heating , P forms the cyclic anhydride. Upon treatment with duilute alkaline `KMnO_(4)`. P as well a Q could produce one or more than one from S,T and U. In the following reaction sequences V and W are respectively `Qunderset(Delta)overset(H_(2)//Ni)rarrV` A. B. C. D. |
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Answer» Correct Answer - A |
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| 25. |
`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 (II)C. Formation of (III)D. Formation of (Iv) |
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Answer» Correct Answer - D |
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| 26. |
`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` |
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Answer» Correct Answer - D |
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| 27. |
`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. What are the constituent amines formed when the mixture of `(1)` and `(2)` undergoes Hofmann bromamide degradation ? (1) (2) .A. B. C. D. |
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Answer» Correct Answer - B |
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| 28. |
When `CH_(3)COOH` reacts with `CH_(3)-Mg-X`A. `CH_(3)COX` is formedB. Hydrocarbon is formedC. Acetone is formedD. Alcohol is formed |
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Answer» Correct Answer - B `CH_(3)COOH+CH_(3)-Mg-XtoCH_(3)-CH_(3)`. |
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| 29. |
Product (A) of the above reaction is:A. `Ph-NH_(2)`B. `Ph-CH_(2)-NH_(2)`C. `Ph-CH_(2)-NH-CO_(2)H`D. `Ph-CH_(2)-NH-CHO` |
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Answer» Correct Answer - B Its Gabriel phthalimide reaction. |
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| 30. |
Which compound is known as oil o winter greenA. Phenyl benzoateB. phenyl salicylateC. Phenyl acetateD. Methyl salicylate |
| Answer» Correct Answer - D | |
| 31. |
Ethanoic acid `+3`-methyl-1-butanol `underset(H_(2)SO_(4))underset("traces")hArr(A)`, Compound (A) is:A. B. C. D. |
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Answer» Correct Answer - B Esterification reaction. |
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| 32. |
Which one is called ethanoic acidA. HCOOHB. `CH_(3)COOH`C. `CH_(3)CH_(2)COOH`D. `CH_(3)CH_(2)CH_(2)COOH` |
| Answer» Correct Answer - B | |
| 33. |
Oleic, stearic and palmitie acids areA. Nucleic acidsB. Amino acidsC. Fatty acidsD. None of these |
| Answer» Correct Answer - C | |
| 34. |
Amphiphilic molecules are normally associated withA. Isoprene based polymersB. Soaps and detergentsC. Nitrogen based fertilizers e.g. ureaD. Pain relieving medicines such as aspirin |
| Answer» Correct Answer - B | |
| 35. |
The general formula of `C_(n)H_(2n)O_(2)` could be for open chainA. diketonesB. Carboxylic acidsC. DiolsD. Dialdehydes |
| Answer» Correct Answer - B | |
| 36. |
0.2 gm of fine animal charcoal is mixed with ahlf litre of acetic acid `(-SM)` solutioin and shaken for 30 minutesA. The concentration of the solution decreasesB. Concentration increasesC. Concentration remainsD. None of these |
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Answer» Correct Answer - A Activated charcoal adsorbed the impurity of acetic acid by which the concentration of acetic acid solution decrease. |
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| 37. |
Acid hydrolysis of which of the following compound yield two different organic compound:-A. `CH_(3)COOH`B. `CH_(3)CONH_(2)`C. `CH_(3)COOC_(2)H_(5)`D. `(C_(3)CO)_(2)O` |
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Answer» Correct Answer - C Acid hydrolysis of an ester gives two different organic compounds . `CH_(3)COOC_(2)H_(5)+H_(2)OtoCH_(3)COOH+C_(2)H_(5)OH` While the acid hydrolysis of an amide gives one organic and one inorganic product is `CH_(3)CONH_(2)+H_(2)O to underset("organic compound")(CH_(3)COOH)+underset("inorganic compound")(NH_(3))` |
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| 38. |
`CH_(3)COOH` is reacted with `CH-=CH` in presence of `Hg^(++)` the product isA. `{:(,CH_(3)(OOC CH_(3))),(,"|"),(,CH_(2)(OOCH_(3))):}`B. `{:(,CH_(3)),(,"|"),(,CH_(2)-(OOC-CH_(3))):}`C. `{:(,CH_(3)),(,"|"),(,CH(OOC-CH_(3))_(2)):}`D. None of these |
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Answer» Correct Answer - C `CH-=CH+CH_(2)COOH overset([Hg^(2+)])to underset("Vinyl aetate")(H_(2)C=CH-OCOCH_(3)) overset(CH_(3)COOH)tounderset("Ethylidene acetate")(CH_(3)-CH(O-COCH_(3))_(2))`. |
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| 39. |
Formaldehyde andformic acid can be distinguished usingA. tollen reagentB. Fehling solutionC. Ferric hlorideD. Sodium bicarbonate |
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Answer» Correct Answer - D `HCOOH+NaHCO_(3) to HCOONa+H_(2)O+CO_(2)` `HCHO+NaHCO_(3)to`No reaction. |
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| 40. |
Which of the following compounds will evolve hydrogen on treatment with metalA. `C_(2)H_(5)OH`B. `CH_(3)COOH`C. Both (a) and (b)D. None of these |
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Answer» Correct Answer - C `2C_(2)H_(5)OH+2Nato2C_(2)H_(5)ON a+H_(2)` `2CH_(3)COOH+2Nato2CH_(3)COONa +H_(2)` |
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| 41. |
Glycine may be classed as all of the following exceptA. A baseB. An acidC. A zwitter ionD. Optically active acid |
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Answer» Correct Answer - D Glycine do not have the chiral carbon so it is not optically active acid. `underset(("Glycine"))(H_(2)N-underset(H)underset(|)overset(H)overset(|)(C)-COOH)` |
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| 42. |
A tribasic acid isA. Oxalic acidB. Tartaric acidC. lactic acidD. Citric acid |
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Answer» Correct Answer - D `HCOOC-CH_(2)-underset(COOH)underset(|)overset(OH)overset(|)(C)-CH_(2)-COOH` citric acid consist of three carboxylic group. |
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| 43. |
The weakest acid among the following isA. `CH_(3)COOH`B. `Cl_(2)CHCOOH`C. `ClCH_(2)COOH`D. `Cl_(2)C COOH` |
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Answer» Correct Answer - A `CH_(3)COOH lt ClCH_(2)COOH lt Cl_(2)CH_(2) COOH lt Cl_(3)C COOH` Increasing order of acidic nature. |
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| 44. |
Identify the compound C in the following sequence: `(CH_(3))_(2) CHCH_(2)C-=N overset(HCI,H_(2)O)rarr` compound `A overset(1.LiAIH_(4))underset(2.H_(2)O)rarr` compound B `overset(PC C)underset(CH_(2)CI_(2))rarr` compound CA. `(CH_(3))_(2)CHoverset(O)overset(||)(C)CH_(3)`B. `(CH_(3))_(2)CHCH_(2)overset(O)overset(||)(C)OH`C. `(CH_(3))_(2)CHCH_(2)overset(O)overset(||)(C)H`D. `(CH_(3))_(2)CHoverset(O)overset(||)(C)CH_(2)OH` |
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Answer» Correct Answer - C (A) `(CH_(3))_(2)CH-CH_(2)-CO_(2)H` (B) `(CH_(3))_(2)CH-CH_(2)-CH_(2)-OH` (C) `(CH_(3))_(2)CH-CH_(2)-overset(O)overset(||)(C)-H` |
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| 45. |
Acetic acid is manufactured by the fermentation ofA. EthanolB. MethanolC. EthanalD. Methanal |
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Answer» Correct Answer - A `C_(2)H_(5)OH overset("Acetobacter")toCH_(3)COOH` |
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| 46. |
Which of the following on hydrolysis forms acetic acidA. `CH_(3)CN`B. `CH_(3)OH`C. `C_(2)H_(5)OH`D. `C_(2)H_(5)NH_(2)` |
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Answer» Correct Answer - A `CH_(3)CN overset(H_(2)O)toCH_(3)COOH+NH_(3)` |
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| 47. |
Carboxylic acids react with diazomethane to yield :A. AmineB. AlcoholC. EstersD. Amide |
| Answer» Correct Answer - C | |
| 48. |
Which decolourises the colour of acidic `KMnO_(4)`A. `CH_(3)COOH`B. `CH_(3)CH_(2)COOH`C. `COOH.COOH`D. `CH_(3)COOC_(2)H_(5)` |
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Answer» Correct Answer - C `{:(,COOH),(,"|"),(,COOH):}+KMnO_(4)+H_(2)SO_(4)to2CO_(2)+H_(2)O+K_(2)SO_(4)+MnSO_(4)` |
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| 49. |
Acetic acid is weak acid than sulphuric acid becauseA. It decompose on increasing temperatureB. It has less degree of ionisationC. It has -COOH groupD. None of these |
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Answer» Correct Answer - B `CH_(3)COOH` is slightly ionised than `H_(2)SO_(4)`. |
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| 50. |
`CH_(2)=CH-(CH_(2))_(5)COOH underset(HBr)overset("Peroxide")to`Z Where Z isA. `CH_(3)-Cunderset(Br)underset(|)(H)-(CH_(2))_(5)COOH`B. `BrCH_(2)-(CH_(2))_(6)COOH`C. `CH_(2)=CH-(CH_(2))_(5)-CH_(2)OH`D. `C_(6)H_(5)COOH` |
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Answer» Correct Answer - B `CH_(2)=CH-(CH_(2))_(5)COOH underset(HBr)overset("peroxide")to underset(Br)underset(|)(CH_(2))-(CH_(2))_(6)-COOH` |
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