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. |
Amongst the following compound which is/are soluble in aqueous NaOH?A. B. C. D. |
| Answer» Correct Answer - A::C::D | |
| 2. |
Which of the following gives two alcohol when it reacts with `LiAIH_(4)`?A. `CH_(3)-overset(O)overset(||)C-O-CH_(3)`B. `CH_(3)-overset(O)overset(||)C-O-overset(O)overset(||)(C)-CH=CH_(2)`C. `CH_(3)-underset(CH_(3))underset(|)CH-overset(O)overset(||)C-O-underset(CH_(2))underset(||)C-CH_(3)`D. All of these |
| Answer» Correct Answer - A | |
| 3. |
Suitable reagent(s) to convert acetyl chloride into acetadehyde is/are : `Na-C_(2)H_(5)OH` `NaBH_(4)` `H_(2)//P//d-BaSO_(4)` `LiAIH(OCMe_(3))_(3)`A. P,Q,RB. R,SC. Q,R,SD. P,Q,R,S |
| Answer» Correct Answer - B | |
| 4. |
Alkylamine dissolve in hydrochloric acid to form alkylammonium chloride. The nitrogen in the latter salt is :A. Quadricovalent onlyB. Tricovalent onlyC. Unielectrovalent onlyD. Quadricovalent, Unielectrovalent |
| Answer» Correct Answer - D | |
| 5. |
Correct order of rate of reaction of MeMgBr will be :A. `Me-overset(O)overset(||)C-H gt Me-overset(O)overset(||)C-Cl gt Me-overset(O)overset(||)C-Me lt Me-overset(O)overset(||)C-OMe`B. `Me-overset(O)overset(||)C-H gt Me-overset(O)overset(||)C-Me gt Me-overset(O)overset(||)C-Cl gt Me-overset(O)overset(||)C-Me`C. `Me-overset(O)overset(||)C-Cl gt Me-overset(O)overset(||)C- OMe gtMe-overset(O)overset(||)C-H gt Me-overset(O)overset(||)C-Me`D. `Me-overset(O)overset(||)C-Cl gt Me-overset(O)overset(||)C-H gt Me-overset(O)overset(||)C-Me gt Me-overset(O)overset(||)C-OMe` |
| Answer» Correct Answer - D | |
| 6. |
Compound(s) without carboxylic acid group in it are :A. Barbituric acidB. Carbolic acidC. Picric acidD. Cyanic acid |
| Answer» Correct Answer - A::B::C::D | |
| 7. |
Which of the following is the correct order of decarboxylation of following carboxylic acids using soda lime?A. B. C. D. |
| Answer» Correct Answer - B | |
| 8. |
Identify A and B in the following reaction `CH_(3)-CH_(3)overset(B)rarrCH_(3)COOHoverset(A)rarrCH_(3)CH_(2)OH`A. `{:(A,B),("HI+redP",LIAlH_(4)):}`B. `{:(A,B),(NI//Delta,LIAIH_(4)):}`C. `{:(A,B),(LiAIH_(4),"HI+red P"):}`D. `{:(A,B),(Pd-BaSO_(4),Zn+HCl):}` |
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Answer» Correct Answer - c Acetic acid on reduction with lithium aluminiumhydride `(LiAlH_(4))` gives ethyl alcohol while on reduction with HI and red P gives ethane. `CH_(3)COOHoverset(LiAlH_(4))Rarroverset("Ethyl alcohol")CH_(3)CH_(2)OH` |
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| 9. |
Racemic 2-methylbutanoiic acid can be resolved using :A. (+) 2-deutro propanolB. (-) 3-deuterohexaneC. (+) 2-aminopentaneD. (-) 3,3-dimethyl cyclohexanethiol |
| Answer» Correct Answer - A::C::D | |
| 10. |
Which of the following is primary amine?A. t-butyl amineB. anilineC. sec. butylamoineD. N-methyl methanamine |
| Answer» Correct Answer - A::B::C | |
| 11. |
Reaction which will produce chiral product :A. B. C. D. `CH_(2)=CH-overset(O)overset(||)C-Meoverset(LiAlH_(4))to` |
| Answer» Correct Answer - A::B::C::D | |
| 12. |
`Me_(3)C-overset(O)overset(||)C-overset(18)O-CMe_(3) overset( "dil." H_(2)SO_(4))rarr` Product of this reaction and the mechanism is :A. `Me_(3)C-overset(O)overset(||)C-OH+Me_(3)C-overset(18)OH,A_(AC^(1))`B. `Me_(3)C-overset(O18)overset(||)C-OH+MeC-OH,A_(AL^(1))`C. `Me_(3)C-overset(O)overset(||)C-OH+Me_(3)C-overset(18)OH,A_(AC^(2))`D. `Me_(3)C-overset(O)overset(||)C-overset(18)OH+Me_(3)C-OH,A_(AL^(2))` |
| Answer» Correct Answer - B | |
| 13. |
Which of the following mechanism is/are not seen during esterification reaction?A. `A_(AC^(2))`B. `B_(AC^(1))`C. `A_(AL^(2))`D. `B_(AC^(2))` |
| Answer» Correct Answer - B::C::D | |
| 14. |
What will be the correct product represented for the reaction? A. B. C. Mixture of both (a) and (b)D. Cannot comment on stereochemistry of product. |
| Answer» Correct Answer - A | |
| 15. |
B gives red colouration with `FeCl_(3)`.A. ` A " is " CH_(3)-underset(CH_(3))underset(|)(CH)-overset(O)overset(||)(C)-OH`B. ` D " is " CH_(3)-underset(CH_(3))underset(|)(CH)-NH_(2)`C. ` D " is " CH_(3)-underset(CH_(3))underset(|)(CH)-OH`D. Both A and C |
| Answer» Correct Answer - B | |
| 16. |
Role of 2,4-dichlorophenoxy acetic acid is used asA. moth repellantB. insecticideC. fungicideD. herbicide |
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Answer» Correct Answer - b 2,4-dichlorophenoxy acetic acid is used as herbicide. |
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| 17. |
Which of the following compound gives the smell of mustard oil?A. Alkyl isocyanateB. Alkyl isothiocyanateC. Alkyl isocyanideD. Alkyl isonitrile |
| Answer» Correct Answer - B | |
| 18. |
`Et-underset(O)underset(||)C-Me` is prepared as one of the product in which of the following reactions ?A. By dry distilition of calcium salt of ethonic acid and methanoic acidB. By heating propanic cid and ethanoic acid with MnO.C. `Me-overset(O)overset(||)C-OEt overset(Et_(2)Cd)to`D. `MeCOCl+EtMgCl to` |
| Answer» Correct Answer - B::D | |
| 19. |
Which of the following reactions are correct?A. B. C. D. |
| Answer» Correct Answer - A::B::C | |
| 20. |
Hydrolysis of alkyl isocyanide yields :A. primary amineB. tert. AmineC. alcoholD. aldehyde |
| Answer» Correct Answer - A | |
| 21. |
Which of the following will be obtained in very small amount during this reaction? `CH_(3)-CH=CH-CH_(2)-underset(O)underset(||)C-O-H underset((ii)Br_(2)//"C"Cl_(4),Delta)overset((i)AgOH)rarr"Products"`A. B. C. D. `{:(CH_(3)-CH=CH-CH_(2)-C-O-CH_(2)),(" "||" "|),(" "O" "CH=CH-CH_(3)):}` |
| Answer» Correct Answer - A::B::C::D | |
| 22. |
Which of the following is/are wrong?A. PhCO-`NH_(2)` gives bad smelling substance with `CHCl_(3)`KOHB. During pinacol-pinacolone rearrangement migratory aptitude is `H gt Ph gt 1^(@) gt 2^(@) gt 3^(@) gt Me`C. 3-chloro propanamide give 2-chloro ethanamine with KOBrD. Tartaric acid gives positive Fehling test |
| Answer» Correct Answer - A::B::C::D | |
| 23. |
Which of the following reactions correctly represent the major product(s)?A. B. C. D. `CH_(3)-CH=CH-overset(O)overset(||)C-OH underset(2.I_(2)//"C"Cl_(4)//Delta)overset(1. AgOH)rarr CH_(3)-CH=CH-I` |
| Answer» Correct Answer - A::C | |
| 24. |
The product formed during Hell-Volhard-Zelinsky reaction isA. `R-underset(X)underset(|)CH-COOH`B. `R-CH_(2)-COX`C. `R-underset(X)underset(|)overset(X)overset(|)C-COOH`D. `R-underset(X)underset(|)CH-CH_(2)-COOH` |
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Answer» Correct Answer - a Carboxylic acids having an `alpha-`hydrogen are halogenated at the `alpha-` position on treatment with chlorine or bromine in the presence of small amount of red phosphorus to give `alpha-` halocarboxylic acids. The reaction is known as Hell-Volhard-Zellinsky reaction. |
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| 25. |
Correct order of rates of alkaline hydrolysis `(B_(AC^(2)))` of compounds P to S is : A. `P gtS gtR gtQ`B. `PgtRgtSgtQ`C. `QgtRgtSgtP`D. `QgtSgtRgtP` |
| Answer» Correct Answer - A | |
| 26. |
`HCNoverset("Hydrolysis")rarr`acid -1 `CH_(3)C Cl_(3)overset("Hydrolysis")rarr` acid-2 The heat of ionisation of HCN and acid-2 respectivley are x kcal and y kcal `[x lt y]`. The order of their `pK_(a)` values will beA. `(pK_(a))_(HCN)gt(pK_(a))_("acid-2")`B. `(pK_(a))_(HCN(=(pK_(a))_("acid-2")`C. `(pK_(a))_(HCN)lt(pK_(a))_("acid-2")`D. All of the above |
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Answer» Correct Answer - a Acid-2 is acetic acid. HCN is a weaker acid as its heat of inoisation is less than acetic acid. Hence, `(pK_(a))_(HCN)gt(pK_(a))_("acid-2")` |
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| 27. |
Acidic hydrolysis of which of the following ester will be slowest?A. `CH_(3)COOCH_(3)`B. `CH_(3)COOCH_(2)CH_(3)`C. `CH_(3)COO-underset(CH_(3))underset(|)C-H-CH_(3)`D. `CH_(3)COOC(CH_(3))_(3)` |
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Answer» Correct Answer - d Alcoholic part of this ester offer maximum streric hinderance. Hence, is hydrolysis will be slowest. |
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| 28. |
In aqueous solution amino acids moslty exit asA. `NH_(2)-CHR-COOH`B. `NH_(2)-CHR-COO^(-)`C. `NH_(3)-CHR-COOH`D. `H_(3)N^(+)CHR-COO^(-)` |
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Answer» Correct Answer - d In aqueous solutions, amino acids moslty exist as zwitter ions. `overset(+)NH_(3)-underset("Zwitter ion")overset(R)overset(|)CH-COO^(-)` |
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| 29. |
The general formula of the compound obtained as a result of reaction between formic acid and hydropiodic acid isA. `C_(n)H_(2n+1)Oh`B. `C_(n)H_(2n+2)`C. `C_(n)H_(2n)O`D. `C_(n)H_(2n)` |
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Answer» Correct Answer - b The product of the reaction is `CH_(4)` and hence, the general formula is `C_(n)H_(2n+2^(+))` |
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| 30. |
Which of the following represents the correct order of the acidic strength in the given compounds ?A. `CH_(3)COOHgtBrCH_(2)COOHgtClCH_(2)COOHgtFCH_(2)COOH`B. `FCH_(2)COOHgtCH_(3)COOHgtBrCH_(2)COOHgtClCH_(2)COOH`C. `BrCH_(2)COOHgtClCH_(2)COOHgtFCH_(2)COOHgtCH_(3)COOH`D. `FCH_(2)COOHgtClCH_(2)COOHgtBrCH_(2)COOHgtCH_(3)COOH` |
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Answer» Correct Answer - d The acidity of halogenated acid increases with increases in electronegativity of the halogen present. The correct order is `FCH_(2)COOHgtClCH_(2)COOHgtBrCH_(2)COOHgtCH_(3)COOH` |
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| 31. |
What will be correct sequence of following conversion ? `CH_(3)-CH_(2)-Cl overset(?)rarr overset(?)rarrCH_(3)-CH_(2)-underset(O)underset(||)C-NH_(2)overset(?)rarrCH_(3)-CH_(2)-NH_(2)`A. `KMnO_(4),NH_(3),KOBr`B. `AgCN,HOH,NaOBr`C. `KCN,"Partial hydrolysis",KOBr`D. Aq.KOH,`NH_(3)`,NaOBr |
| Answer» Correct Answer - C | |
| 32. |
`CH_(3)-NH-overset(O)overset(||)C-CH_(3)overset(LAH)rarrX` X is also obtained by reduction of which of the following using LAH?A. `CH_(3)-NH-CH_(2)-overset(O)overset(||)CH`B. `CH_(3)-CH_(2)-NH-overset(O)overset(||)CH`C. `CH_(3)-NH-CH_(2)-overset(O)overset(||)C-OH`D. All of the above |
| Answer» Correct Answer - B | |
| 33. |
Acetonitrile `underset((ii)H^(+)//H_(2)O)overset((i)PhMgBr)rarr` Product Product is :A. `H_(3)C-underset(O)underset(||)C-underset(O)underset(||)C-Ph`B. `H_(3)C-underset(OH)underset(|)overset(Ph)overset(|)C-CN`C. `H_(3)C-underset(O)underset(||)C-Ph`D. `H_(3)C-underset(OH)underset(|)CH-Ph` |
| Answer» Correct Answer - C | |
| 34. |
This reaction is called as :A. EsterificationB. DecarboxylationC. SaponificationD. Schotten Baumann reaction |
| Answer» Correct Answer - C | |
| 35. |
Order of Migratory aptitude in Bayer Villiger oxidation is :A. `H gtPh gt3^(@)gt2^(@)gt1^(@)gtCH_(3)`B. `H gt3^(@) gt2^(@)gtPhgt1^(@)gtCH_(3)`C. `H gt3^(@) gtPhgt2^(@)gt1^(@)gtCH_(3)`D. `H gt3^(@) gt2^(@)gt1^(@)gtPhgtCH_(3)` |
| Answer» Correct Answer - B | |
| 36. |
`R-COOAgunderset("C"Cl_(4)//Delta) overset(Br_(2))rarr R-Br` What will be the correct order of percentage yield of product for the following reactants in above reaction? `Me_(3)C-COOAg` " " `Me_(2)CH-COOAg` " " `Me-CH_(2)-COOAg`A. `P gt Q gtR`B. `R gt Q gt P`C. `P=Q=R`D. `Q=R=P` |
| Answer» Correct Answer - B | |
| 37. |
Salicylic acid `overset(Delta)rarr` product(s). Product(s) will be :A. B. C. D. |
| Answer» Correct Answer - C | |
| 38. |
A compound with molecular formula `C_(6)H_(10)O_(4)` on acylation with acetic anhydride gives a compound with molecular formula `C_(12)H_(18)O_(8)`. How many hydroxyl groups are present in the compound?A. OneB. TwoC. ThreeD. Four |
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Answer» Correct Answer - d `R-OHrarrR-OCOOH_(3)` Acylation of one hydroxyl group results in increament of `-COCH_(2)` (or `C_(2)H_(2)O`). In the question there is n increament of `(C_(6)H_(8)O_(4))`, hence there should be present four-OH groups. |
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| 39. |
The product of which of the following reaction is capable of changing orange colour of `Cr_(2)O_(7)^(2-)` to green colour of `Cr^(3+)`.A. `CH_(2)(COOH)_(2)overset(Delta)rarr`B. `CH_(3)Cnoverset(H_(3)O^(+))rarr`C. `HCNoverset(H_(@)O^(+))rarr`D. `CH_(3)CONH_(2)overset(H_(2)O)rarr` |
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Answer» Correct Answer - c Product of 1,2 and 4 is `CH_(3)COOH`, where as product of 3 is HCOOH which is reducing agent and will be oxidised by `Cr_(2)O_(7)^(2-)`. |
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