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.
| 201. |
Carboxylic acid reacts with diazomethane to yield :A. aminesB. alcoholsC. estersD. amides |
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Answer» Correct Answer - C See properties of acids |
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| 202. |
By treating acetic acid with an etheral solution of diazomethane, it formsA. methyl acetateB. ethyl acetateC. acetamideD. acetic anhydride |
| Answer» Correct Answer - A | |
| 203. |
How many acids and esters are possible for the compound with molecular formula, `C_(4)H_(8)O_(2)` ?A. Two acids, two estersB. Three acids, three estersC. Two acids, four estersD. Three acids, four esters. |
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Answer» Correct Answer - C Two acids : `CH_(3)CH_(2)CH_(2)COOH` and `CH_(3) - overset(CH_(3))overset(|)(CH) - COOH` Four esters : `CH_(3)CH_(2)COOCH_(3), CH_(3)COOCH_(2)CH_(3) , HCOOCH_(2)CH_(2)CH_(3)` and `HCOOCH, HCOOoverset(CH_(3))overset(|)(CH)- CH_(3)` |
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| 204. |
`CH_(3)CN overset(H_(2)O)rarr X overset("diazomethane")rarr Y X and Y areA. Acetamide, N-methyl acetamideB. Acetic acid, ethyl ethanoateC. Acetic acid, ethyl ethanoateD. Acetamide, Acetone |
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Answer» Correct Answer - C `underset("Methyl cyanide")(CH_(3)CN overset(H_(2)O)rarr) underset((X))(CH_(3)COOH) overset(CH_(2)N_(2))rarr underset("Methyl acetate")(CH_(3)COOCH_(3))` |
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| 205. |
The acid which does not form an anhydride when treated with `P_(4)O_(10)` isA. formic acidB. acetic acidC. propanoic acidD. benzoic acid |
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Answer» Correct Answer - A Formic acid |
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| 206. |
The sodium salt of acid which does not form an alkane when subjected to electrolysis isA. sodium formateB. sodium acetateC. sodium propanoateD. sodium butanoate |
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Answer» Correct Answer - A Sodium formate gives `H_(2)` gas |
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| 207. |
Chloretone belongs to which of the following organic familyA. AldehydeB. `gamma-`chloroketoneC. Chloro substituted esterD. Trichloro alcohol |
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Answer» Correct Answer - D Chloretone is `Cl_(3)C - underset(OH)underset(|)overset(CH_(3))overset(|)(C) - CH_(3)` |
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| 208. |
Which of the following substance will not poduce methane by its treatment with methyl magnesium iodide?A. EthanolB. AcetoneC. WaterD. Ethyl amine |
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Answer» Correct Answer - B Acetone will react with `CH_(3)MgI` to form tertiary alcohol |
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| 209. |
Acetamide isA. highly acidicB. highly basicC. neutralD. amphoteric |
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Answer» Correct Answer - D `underset(("Acid"))(CH_(3) - overset(O)overset(||)(C) - NH_(2)) + Na rarr CH_(3) - overset(O)overset(||)(C) - overset(-)(NH) overset(+)(Na) + (1)/(2) H_(2) uarr` `underset(("Base"))(CH_(3) - overset(O)overset(||)(C)) - NH_(2) + HCl rarr CH_(3) - overset(O)overset(||)(C) - overset(+)(N)H_(3) overset(-)(Cl` |
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| 210. |
Which of the following cannot reduce Fehling solution ?A. `HCOOH`B. `H_(3)C COOH`C. `HCHO`D. `H_(3)C CHO` |
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Answer» Correct Answer - B `RCOOH` (Where R is an alkyl radical) can not reduce Fehling solution |
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| 211. |
Which of the following acids are dicarboxylic acids ?A. Succoinic acidB. Glutaric acidC. Lactic acidD. Cinnamic acid |
| Answer» Correct Answer - A::B | |
| 212. |
The acids which do not contain a-COOH group are :A. picric acidB. lactic acidC. carbolic acidD. propanoic acid |
| Answer» Correct Answer - A::C | |
| 213. |
What types of isomerism are exhibited by hexanoic acid?A. Chain isomerismB. Position isomerismC. Functional group isomerismD. Metamerism |
| Answer» Correct Answer - A::C | |
| 214. |
Carboxylic acids are more acidic than phenol and alcohol because ofA. intermolecular hydrogen bondingB. formation of dimersC. highly acidic hydrogenD. resonance stabilization of their conjugate base |
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Answer» Correct Answer - D Resonance stabilization of their conjugate base i.e., carboxylate ions |
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| 215. |
In the following reaction, product P is `R - overset(O)overset(||)(C) - Cl underset(Pd - BaSO_(4))overset(H_(2))rarr P`A. `R CH_(2)OH`B. `R COOH`C. `R CHO`D. `R CH_(3)` |
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Answer» Correct Answer - C `RCOCl underset(Pd - BaSO_(4))overset(H_(2))rarr underset((P))(RCHO) + HCl` |
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| 216. |
In the mechanism of Hoffmann reaction, which intermediate rearranges to alkyl isocyanate ?A. BromamideB. MetheneC. NitreneD. Amide |
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Answer» Correct Answer - C `underset(1^(@)"Amide")(R - overset(O)overset(||)(C) - NH_(2)) underset(KOH)overset(Br_(2))rarr underset("Acetylinitrene")(R - overset(O)overset(||)(C) - overset(..)(N): ) overset("Rearranges")rarr underset("Alkyl isocyanate")(R - N = C = O)` |
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| 217. |
Acrolein test is positive for:A. polysaccharidesB. proteinsC. oils and fatsD. reducing sugars |
| Answer» Correct Answer - C | |
| 218. |
Addition of `HBr` to `CH_(2) = CHCOOH` result in formation ofA. `alpha-`Bromopropanoic acidB. `beta-`Bromo propanoic acid as major productC. None of the aboveD. both A and B in equal proportion |
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Answer» Correct Answer - B `H_(2)C = CHCOOH + HBr rarr underset(beta- "Bromopropanoic acid")(Br -H_(2) overset(beta)(C) - overset(alpha)(C) - COOH)` |
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| 219. |
Trihalogen methane on hydrolysis with `NaOH` (aq). Gives :A. formic acidB. acetic acidC. sodium formateD. all |
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Answer» Correct Answer - C See preparation of acids |
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| 220. |
An ester can be reduced to alcohol /alcohols byA. `LiAlH_(4)`B. `NaBH_(4)`C. both A and BD. None of these |
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Answer» Correct Answer - A An ester can be reduced to alcohol by `LiAlH_(4)` (chemical reduction) or by `H_(2)//`copper chromite (catalytic reduction) only. `NaBH_(4)` cannot be used to reduce an ester to alcohol |
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| 221. |
A gas produced by dropping water over calcium carbide is bubbled through dilute `H_(2)SO_(4)` containing `HgSO_(4)`. Which reagent can convert the product of above reaction into ethyledenedichloride ?A. `Cl_(2)`B. `SOCl_(2) //Pt`C. `SbCl_(5)`D. Chloroform |
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Answer» Correct Answer - B `CaC_(2) + H_(2)O rarr C_(2)H_(2) uarr + Ca(OH)_(2)` `CH -= CH + H_(2)O underset(H_(2)SO_(4) // HgSO_(4))rarr CH_(3)CHO` `CH_(3) - overset(H)overset(|)(C) = O + SOCl_(2) rarr underset("Ethylendene dichloride")(CH_(3) - overset(H)overset(|)(C Cl_(2)))` |
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| 222. |
Diacetone alcohol is obtained from the reaction ofA. Acetone and ethanolB. Acetone and conc. `H_(2)SO_(4)`C. Acetone and `LiAiH_(4)`D. Acetone and `Ba(OH)_(2)` |
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Answer» Correct Answer - D It involves the alkaline aldol type condensation of two acetone molecules |
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| 223. |
Which of the following does not give HVZ reactionA. `CH_(3)CH_(2)COOH`B. `CH_(3)COOH`C. `HCOOH`D. `(CH_(3))_(2)COOH` |
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Answer» Correct Answer - C In Hell Vohlhard Zelinsky reaction, when acid reacts with `Br_(2)` and `Cl_(2)` in the presence of red phosphorus `alpha-`hydrogen atom |
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| 224. |
Which of the following is responsible for the rancidification of fats?A. HydrogenationB. Esterification and hydrolysisC. Oxidation and hydrolysisD. Dehydration |
| Answer» Correct Answer - C | |
| 225. |
Main product of the reaction, `CH_(3)CONH_(2) + HNO_(2)to`A. `CH_(3)NH_(2)`B. `CH_(3)CH_(2)NH_(2)`C. `CH_(3)COOH`D. `CH_(3)OH` |
| Answer» Correct Answer - C | |
| 226. |
The correct order of acidic strength of the following compound is : `(I) CH_(3)CH_(2)CH_(2)COOH (ii)underset(CN)underset(|)CH_(2)-COOH` `(III)H_(2)C=CH-CH_(2)COOH`A. `I lt II lt III`B. `I lt III lt II `C. `III lt II lt I`D. `II lt I lt III` |
| Answer» Correct Answer - B | |
| 227. |
Propionic acid when reacted with bromide m the presence of phosphorus forms:A. `CH_(2)(Br)CH_(2)COOH`B. `CH_(3)CH_(2)COBr`C. `CH_(3)CH(Br)COOH`D. `CH_(3)CH(Br)COBr` |
| Answer» Correct Answer - C | |
| 228. |
Pyruvic acid isA. an `alpha-` keto acidB. a `beta-`keto acidC. a `gamma-`keto acidD. `delta-`keto acid |
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Answer» Correct Answer - A Pyruvic acid is `CH_(3) overset(O)overset(||)(C) COOH`. It is an `alpha-`keto acid |
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| 229. |
`Xoverset(CI_(2))(to)"Benzotrichloride"overset("Hydrolysis")(to)Y,` X and Y respectively are :A. benzene and benzoic acidB. benzene and benzaldehydeC. toluene and benzoic acidD. toluene and benzaldehyde |
| Answer» Correct Answer - C | |
| 230. |
Which of these does not contain -COOH group?A. AspirinB. Benzoic acidC. Picric acidD. Salicylic acid |
| Answer» Correct Answer - C | |
| 231. |
The correct acidity order of the following is A. ` III gt IV gt II gt I `B. `IVgt III gt I gt II`C. `III gt II gt I gt IV `D. `II gt III gt IV gt I` |
| Answer» Correct Answer - A | |
| 232. |
The reagent( s) used in the preparation of aspirin from salicylic acid is/areA. `SOCl_(2)`, pyridineB. `CH_(3)Cl, AlCl_(3)`C. `CH_(3)CO_(2)H, HCl`D. `(CH_(3)CO)_(2)O, H^(+)` |
| Answer» Correct Answer - D | |
| 233. |
Decarboxylation of cinnamic acid gives:A. benzeneB. tolueneC. ethylbenzeneD. styrene |
| Answer» Correct Answer - D | |
| 234. |
Aspirin is obtained by action of `CH_(3)COCI` with:A. salicylic acidB. phenolC. benzaldehydeD. aniline |
| Answer» Correct Answer - A | |
| 235. |
The stronest acid among the following isA. butyric acidB. formic acidC. acetic acidD. propionic acid |
| Answer» Correct Answer - B | |
| 236. |
Which of the following is the weakest acid?A. B. `CH_(3)COOH`C. HCOOHD. |
| Answer» Correct Answer - B | |
| 237. |
Choose the weakest acid among the following :A. `F_(3)"CC"OOH`B. `FCH_(2)COOH`C. `(CH_(3))_(2)CHCOOH`D. `CH_(3)CH_(2)COOH` |
| Answer» Correct Answer - C | |
| 238. |
The weakest acid among the following is :A. benzoic acidB. o-nitrobenzoic acidC. cyclohexane carboxylic acidD. p-nitrobenzoic acid |
| Answer» Correct Answer - C | |
| 239. |
Choose the weakest acid among the followingA. `F_(3)C COOH`B. `FCH_(2)COOH`C. `CH_(3)COOH`D. `(CH_(3))_(2)CHOOH` |
| Answer» Correct Answer - D | |
| 240. |
Predict X in above reactionA. B. C. D. |
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Answer» Correct Answer - C Here benzoic acid is formed because of the oxidation of alkyl benzene. Moreover, whatever may be the length of alkyl group, the product will always be benzoic acid. Hence choice (A) is incorrect |
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| 241. |
Cyanohydrin of which of the following forms lactic acidA. `HCHO`B. `CH_(3)COCH_(3)`C. `CH_(3)CHO`D. `CH_(3)CH_(2)CHO` |
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Answer» Correct Answer - C `{:(" "H " "H" " H),(" "|" "|" "|),(CH_(3) - C O + HCN rarr CH_(3) - C - OH overset(H_(2)O //H^(+))rarr CH_(3) - C - OH),(" "|" "|),(" "CN" "COOH),(" Acetaldehyde"" Lactic acid" ):}` |
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| 242. |
Formic acid when treated with `H_(2)SO_(4)` givesA. `(COOH)_(2)`B. `CH_(3)COOH`C. `C_(2)H_(5)OH`D. `CO` |
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Answer» Correct Answer - D `CO` is formed |
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| 243. |
The increasing order of the acid strength is correct inA. Phenol, Acetic acid, Ethanol, Chloroacetic acidB. acetic acid, Ethanol, Phenol, Chloro acetic acidC. Ethanol, Phenol, Acetic acid, Chloro acetic acidD. chloroacetic acid, Acetic acid, Ethanol, Phenol |
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Answer» Correct Answer - C `C_(2)H_(5)OH gt C_(6)H_(5)OH gt CH_(3)COOH gt ClCH_(2)COOH` |
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| 244. |
Silver acetate `+I_(2) overset(CS_(2))rarr` the main prodcut of this reaction isA. `CH_(3)I`B. `CHI_(3)`C. `CH_(3)COI`D. `CH_(3)COOCH_(3)` |
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Answer» Correct Answer - D `CH_(3)COOAg + I_(2) overset(CS_(2))rarr CH_(3)I + AgI + CO_(2)` `CH_(3)I + AgOCOH_(3) rarr underset("Methyl acetate")(CH_(3)COOCH_(3))` |
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| 245. |
An organic acid having molecular formula `C_(2)H_(4)O_(2)` isA. Formic acidB. Acetic acidC. Oxalic acidD. Propionic acid |
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Answer» Correct Answer - B `H_(3)C - overset(O)overset(||)(C) - O - H (C_(2)H_(4)O_(2))` |
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| 246. |
Which of the following compounds will be optically active ?A. `(CH_(3))_(2) CHOH`B. `CH_(3) CH_(2) CH_(2) CH_(3)`C. `CH_(3) - CHCl - COOH`D. `(CH_(3))_(3) C Cl` |
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Answer» Correct Answer - C `H_(3)C - underset(Cl)underset(|)overset(H)overset(|)(C^(**)) - COOH` |
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| 247. |
Which product is obtained in reaction of methanal in the presence of concentrated `NaOH`?A. `CO + H_(2)`B. Formic acidC. Formic acidD. Methyl alcohol |
| Answer» Correct Answer - C | |
| 248. |
Identify A and B in the reaction given below `"Ethane nitrile"underset(underset(underset(-NH_(3))(+2H_(2)O))(aq. H_(2)SO_(4)))overset("Hydrolysis")(rarr)A underset(underset(underset(-CO_(2))(Delta))("Sodalime"))overset("Decarboxylation")(rarr)B`A. Acetone, MethaneB. Ethanoic acid, MethaneC. Acetiec acid, MethanolD. Ethanoic acid, Ethane |
| Answer» Correct Answer - B | |
| 249. |
Best starting material to synthesize 2-methyl-2-butenoic acid is:A. `CH_(3)-underset(OH)underset(|)overset(CH_(3))overset(|)C-CH_(3)`B. `CH_(3)CH_(2)CH_(2)CHO`C. `CH_(3)-underset(CH_(3))underset(|)"CH"-CHO`D. `CH_(3)CH_(2)-overset(O)overset(||)C-CH_(3)` |
| Answer» Correct Answer - D | |
| 250. |
Which of the following gives smell of burnt sugar on charring?A. Oxalic acidB. Tartaric acidC. Malonic acidD. Succinic acid |
| Answer» Correct Answer - B | |