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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.
| 251. |
The strongest acid among the following isA. `p-`chlorophenolB. `p`-nitrophenolC. `m-`nitrophenolD. `o-`nitrophenol |
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Answer» Correct Answer - B Nitro si strongly electron withdrawing group, at ortho position intra-molecular hydorgen bond reducts the acidic strength. |
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| 252. |
Primary amine on treatment with `NaNO_(2)` and `HCl` yields `:`A. nitro compoundB. ammoniaC. secondary alcoholD. primary alcohol |
| Answer» Correct Answer - D | |
| 253. |
Boiling point of alcohol is comparatively higher than that of corresponding alkane due toA. intermolecular hydrogen bondingB. intramolecular hydrogen bondingC. volatile natureD. None of the above |
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Answer» Correct Answer - A `R-O-H….underset(H)underset(|)O-R` Alcohol can form intermolecular hydrogen bond with another molecular of alcohol. So, more energy is required to separated and boil them. |
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| 254. |
Give IUPAC name of the compound given below. `CH_(3)-underset(Cl)underset(|)(CH)-(CH_(2))-CH_(2)-underset(OH)underset(|)(CH)-CH_(3)`A. 2-chloro-5-hydroxyhexaneB. 2-hydroxy-5-chloroxyhexaneC. 5-chlorohexane-2-olD. 5-chlorohexane-5-ol |
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Answer» Correct Answer - C `overset(6)(CH_(3))-underset(Cl)underset(|)overset(5)(CH)-overset(4)(CH_(2))-overset(3)(CH_(2))-underset(OH)underset(|)overset(2)(CH)-overset(1)(CH_(3))` The correct IUPAC name of the compound is 5-chlorohexane-2-ol. Hence, option (c) is the correct answer. |
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| 255. |
Aliphatic primary amines on reaction with `Nano_(2)//HCl` give `:`A. only primary schoolB. only secondary alcoholC. only tertiary alcoholD. primary, secondary and tertiary alcohol |
| Answer» Correct Answer - D | |
| 256. |
Which is primary acohole?A. Butan`-2-o1`B. Butan`-1-o1`C. Propan`-2-o1`D. Isopropy`1`alcohol |
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Answer» Correct Answer - B `1^(@)` alcohol is `H-underset(H)underset(|)overset(R)overset(|)C-OH` |
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| 257. |
The acidic hydrolysis of ether `(X)` shown below is fastest when A. one phenyl group is replaced by a methyl groupB. one phenyl group is replaced by a para-methoxy phenyl groupC. two phenyl groups are replaed by two para-methoxy phenyl groupsD. no structural change is made to (X) |
| Answer» Correct Answer - C | |
| 258. |
Acidic hydrolysis of ether givesA. Two mole of aldehydeB. One mole of alcoholC. One mole of aldehydeD. Two mole of alcohol |
| Answer» Correct Answer - D | |
| 259. |
The acidic hydrolysis of ether `(X)` shown below is fastest when A. One pheny`1` group is replaced by a Methyl groupB. One pheny`1` group is replaced by a para-methoxyphenency`1` groupC. Two pheny`1` groups are replaced by two para-methoxpheny`1` gropsD. No structural change is made to `X` |
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Answer» Correct Answer - C This reaction proceeds via carbocation `-OCH_(3)` group has `+R` effect. It increases the stability of the carbocation. |
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| 260. |
Give IUPAC names of the following ethers: (i) `C_(2)H_(5)OCH_(2)-underset(CH_(3))underset("| ")("C ")H-CH_(3)` (ii) `CH_(3)OCH_(2)CH_(2)Cl` (iii) `O_(2)N-C_(6)H_(4)-OCH_(3)(p)` (iv) `CH_(3)CH_(2)CH_(2)OCH_(3)` |
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Answer» (i) 1-Ethoxy-2-methylpropane (ii) 2-Chlorlo-I-methoxyethane (iii) 4-Nitroanisole (iv) 1-Methoxypropane (v) 1-Ethoxy-4-dimethylcyclohexane (vi) Ethoxybenzene |
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| 261. |
Which of the following ether will give two successive members of homologous series, on acid hydrolysis ?A. Diethyl etherB. Dimethyl etherC. Ethyl methyl etherD. Methyl n-propyl ether |
| Answer» Correct Answer - C | |
| 262. |
Assertion (A) IUPAC name of the compound `CH_(3)-underset(CH_(3))underset(|)(CH)-O-CH_(2)-CH_(2)-CH_(3)` is 2-ethoxy-2-methylethane Reason (R) In IUPAC nonmenclature, ether is regarded as hydrocarbon derivative in which a hydrogen atom is replaced by -OR and or -OAr group [where, R = alkyl group and Ar = aryl group].A. Assertion and reason both are correct and reason is correct explanation of assertion.B. Assertion and reason both are wrong statements.C. Assertion is correct statement but reason is wrong statement.D. Assertion is wrong statement but reason is correct statement. |
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Answer» Correct Answer - D Assertion is wrong statement but reason is correct statement. Correct Assertion The IUPAC name of the given compound is 1-(2-propoxy) propane. |
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| 263. |
The compound that does not react with sodium isA. `CH_3OCH_3`B. `CH_3COOH`C. `CH_3CHOHCH_3`D. `C_2H_5OH` |
| Answer» Correct Answer - A | |
| 264. |
Give IUPAC name of the following compounds `CH_(3)-underset(CH_(3))underset("| ")"CH"-underset(OH)underset("| ")"CH"-CH_(3)` isA. 3-methyl-2-butanolB. 2-methyl-3-butanolC. iso-propanolD. None of the above |
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Answer» Correct Answer - A `underset("3-methyl-2-butanol")(overset(4)CH_(3)-overset("3 ")underset(CH_(3))underset("| ")(CH)-overset("2 ")underset(OH)underset("| ")"CH"-overset(1)CH_(3))` |
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| 265. |
Propylene is subjected to hydroboration oxidation reaction. The product formed would beA. PropanalB. 1-PropanolC. 2-PropanolD. Propanone |
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Answer» Correct Answer - B |
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| 266. |
The compound which is mixed with alcohol to get a substitute for petrol isA. ethanolB. diethyl etherC. acetaldehydeD. propanol |
| Answer» Correct Answer - B | |
| 267. |
Propylene on hydrolysis with sulphuric acid formsA. n-propyl alcoholB. isopropyl alcoholC. ethyl alcoholD. butyl alcohol |
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Answer» Correct Answer - B `underset("Propylene")(CH_(2)=CH)-CH_(3)+H_(2)Ooverset(H_(2)SO_(4))rarrunderset("isopropyl alcohol")(CH_(3)-overset(OH)overset("| ")"CH"-CH_(3))` Thus, in this reaction isopropyl alcohol is formed. |
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| 268. |
The ethers heated with excess of HI gives three different products. The ether will be,A. simpleB. mixedC. either simple or mixedD. unpredictable in nature |
| Answer» Correct Answer - B | |
| 269. |
Which of the following processes is concentrated with the formation of ethers?A. Wurtz synthesisB. Williamson synthesisC. Kolbe synthesisD. Hofmann synthesis |
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Answer» Correct Answer - B Sodium ethoxide reacts with ethyl halide to produce ether. This process is called Williamson synthesis. |
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| 270. |
Assertion (A) The cleavage of `C-O` bond in ethers takes place under drastic condition with excess hydrogen halides Reason (R) Ethers are the most reactive among all the functional groups.A. Both A and R are correct and R is the correct explanation of AB. Both A and R are correct but R is not the correct explanation of AC. A is correct but R is incorrectD. R is correct but A is incorrect |
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Answer» Correct Answer - C Ethers are the least reactive among all the functional groups. The cleavage of `C-O` bond in ethers takes place under drastic conditions with excess of hydrogen halides. |
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| 271. |
Tertiary alcohols `(3^(@))` having at least four carbon atoms upon drastic oxidation yeild carboxylic acid withA. one carbon atom lessB. two carbon atoms lessC. three carbon atoms lessD. All of these |
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Answer» Correct Answer - B `3^(@)` alcohols are resistant to oxidation under drastic condition. They first ketone and then acid by `3^(@) underset("(4C)")("alcohol") overset("Drastic condition")underset("[O]")rarr underset("(3C)")"Ketone"overset([O])rarr underset("(2C)")"Acid"` `therefore` Acid having 2C is formed when `3^(@)` alcohol is oxidised under drastic conditions. |
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| 272. |
How many isomers of `C_(5)H_(11)OH` will be primary alcohols ?A. 5B. 4C. 3D. 2 |
| Answer» Correct Answer - B | |
| 273. |
IUPAC name of following compound is A. pent-3-en-2-olB. pent -2-en-4-olC. but-3-en-2-olD. but-2-en-4-ol |
| Answer» Correct Answer - A | |
| 274. |
How many isomers of `C_5H_11OH` will be `1^@` alcohols?A. FiveB. FourC. TwoD. Seven |
| Answer» Correct Answer - B | |
| 275. |
Correct IUPAC name of the following compound is A. 3-phenylbutan-3-olB. 2-phenylpropan-2-olC. 2-phenylbutan-2-olD. 3-phenylbutan-2-ol |
| Answer» Correct Answer - C | |
| 276. |
General representation of primary alcohol isA. B. `-CH_2OH`C. D. |
| Answer» Correct Answer - B | |
| 277. |
The general formula, which represent the homologous series of alcohol isA. `C_nH_(2n)O`B. `C_nH_(2n+1)O`C. `C_nH_(2n)O_2`D. `C_nH_(2n+2)O` |
| Answer» Correct Answer - D | |
| 278. |
Which of the following will not form a yellow precipitate on heating with an alkaline solution of iodine?A. `CH_(3)OH`B. `CH_(3)CH_(2)OH`C. `CH_(3)CH(OH)CH_(3)`D. `CH_(3)CH_(2)CH(OH)CH_(3)` |
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Answer» Correct Answer - A Formation of a yellow precipiate on heating a compound with an alkaline solution of iodine is know as iodoform reaction. Methyl alcohol does not respond to his test. Iodoform test is exhibited by ethyl alcohol, acetaldehyde, acetone, Methyl ketone and those alcohols which posses `CH_(3)CH(OH)-` group. |
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| 279. |
2-methyl propan-1-ol is obtained from 2-methyl prop-1-ene by usingA. dil. `H_2SO_4`B. `B_2H_6`/THF, `H_2O_2` and NaOHC. `(CH_3COO)_2Hg + NaBH_4`D. `H_2`/Ni |
| Answer» Correct Answer - B | |
| 280. |
In the nitration of phenol with a mixture of conc. `HNO_3` and conc. `H_2SO_4`, the active species involved isA. nitrite ionB. nitronium ionC. nitrate ionD. nitrogen peroxide |
| Answer» Correct Answer - B | |
| 281. |
A primary alcohol, `C_(3)H_(8)O(W)` on heating with sulphuric acid undergoes dehydration to give an alkene , (X), which reacts with HCl to give (Y). (Y) on treatment with aqueous KOH gives compound (Z),`C_(3)H_(8)O`. Compounds (W) and (Z) are `:`A. functional isomersB. position isomersC. chain isomersD. stereoisomers . |
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Answer» Correct Answer - B `underset((A))(CH_3CH_2CH_2OH)underset(H_2SO_4)overset(Delta)rarrunderset((B))(CH_3CH=CH_2)+H_2O` `underset((B))(CH_3CH)=CH_2+HClrarrunderset((C))(CH_3underset(Cl)underset(|)CH-CH_3)` `CH_3-underset(( C))underset(Cl)underset(|)"CH"-CH_5+KOH_(aq.)rarrCH_3-underset((D))underset(OH)underset(|)"CH"-CH_3` A and D are position isomers. |
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| 282. |
Ester on reduction by using `LiAlH_4` producesA. single aldehydeB. single alcoholC. mixture of aldehydeD. mixture of alcohol |
| Answer» Correct Answer - D | |
| 283. |
The product formed, when glycol is heated with anhydrous zinc chloride, is `:`A. acetaldehydeB. glyoxalC. oxalic acidD. ethylene oxide |
| Answer» Correct Answer - A | |
| 284. |
Predict the product when alcohol undergoes dehydration with conc. `H_(2)SO_(4)`.A. B. C. D. |
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Answer» Correct Answer - D [Hint] `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-CH_(2)-CH_(2)-OH overset(H^(+),(-H_(2)O))(rarr)` `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-CH_(2)-overset(+)(C)H_(2)overset(1,2H^(-)"shift")(rarr)` `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-overset(+)(C)H-CH_(3)overset(1,2H^(-)"shift")(rarr)` `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH=CH-CH_(2)` |
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| 285. |
Which is U.P. Spirit (containing ethyl alcohol by volume) ?A. `85%`B. `75%`C. `65%`D. `55%` |
| Answer» Correct Answer - D | |
| 286. |
Denatured spirit is mainly used as a `:`A. drugB. good fuelC. material in preparing oilsD. solvent in preparing vernishes |
| Answer» Correct Answer - D | |
| 287. |
Which of the following can reduces ester to alcohol ?A. `NaBH_(4)`B. Na`//` alcoholC. `H_(2)//Ni`D. `NaBH_(3)CN` |
| Answer» Correct Answer - B | |
| 288. |
Methylated spirit is `:`A. `100%` alcoholB. `95.6%` alcohol `+4.4%` waterC. `90%` alcohol `+ 9%` methanol `+` pyridine, etc.D. power alcohol |
| Answer» Correct Answer - C | |
| 289. |
Which of the following reagents may be used to distinguish between phenol and beznoic acid ?A. Aqueous NaOHB. Tollens reagentC. Neutral `FeCl_(3)`D. Molisch reagent |
| Answer» Correct Answer - c | |
| 290. |
In which of the following reactions, alcohol will be formed as final product ?A. `(CH_(3)-CH_(2)=CH_(2)^(-))_(3)Boverset(H_(2)O_(2)+NaOH)(rarr)`B. C. `CH_(3)-CH=CHMgBroverset(O_(2),Delta)(rarr)overset(H_(2)O)(rarr)`D. |
| Answer» Correct Answer - A,B,D | |
| 291. |
In which of the following reactions, ethyl chloride is not formed ?A. `C_(2)H_(5)OC_(2)H_(5)+PCl_(5) overset(Detla)(rarr)`B. `C_(2)H_(5)OC_(2)H_(5)+CH_(3)COCloverset(AlCl_(3))(rarr)`C. `C_(2)H_(5)OC_(2)H_(5)+Cl_(2)overset(hv)(rarr)`D. `C_(2)H_(5)OH+PCl_(3)rarr` |
| Answer» Correct Answer - C | |
| 292. |
The product (D) in the following sequence of reactions is `:` `C_(2)H_(4)overset(HBr)(rarr)(A)overset(NaOH(aq.))(rarr)(B) overset(Na)(rarr)(C ) overset(CH_(3)I)(rarr)`A. butaneB. ethaneC. propaneD. ethyl methyl ether |
| Answer» Correct Answer - D | |
| 293. |
Ether is obtained from ethyl alcoholA. 113KB. 443KC. 413 KD. 213 K |
| Answer» Correct Answer - C | |
| 294. |
the conversion of maltose to glucose is possible by the enzyme :A. zymaseB. maltaseC. invertaseD. diastase |
| Answer» Correct Answer - B | |
| 295. |
Which of the following reagents cannot be used to distinguish between phenol and alcohol?A. `Br_2 // C Cl_4`B. NaOHC. `NaHCO_3`D. neutral `FeCl_3` |
| Answer» Correct Answer - C | |
| 296. |
The enzyme which can catalyse the conversion of glucose to ethanol isA. invertaseB. zymaseC. maltaseD. diastase. |
| Answer» Correct Answer - B | |
| 297. |
The C-O-C angle in ether is aboutA. `180^(@)`B. `190^(@) 28`C. `110 ^(@)`D. `105^(@)` |
| Answer» Correct Answer - C | |
| 298. |
Match the column I with column II and mark the appropriate choice . A. (A) `to` (ii) , (B) `to` (iii) , (C) `to` (iv) , (D) `to` (i)B. (A) `to` (i) , (B) `to` (ii) , (C) `to` (iii) , (D) `to` (iv)C. (A)` to` (iv) , (B) `to` (iii) , (C) `to` (ii) , (D) `to` (i)D. (A) `to` (ii) , (B) `to` (iv) , (C) `to` (i) , (D) `to` (iii) |
| Answer» Correct Answer - A | |
| 299. |
Provide a mechanism for the following reaction and suggest a reason for the diasteroselectivity of the reactions |
| Answer» The reaction occurs syn to the hydroxy methyl group | |
| 300. |
Upon treatment with `I_(2)` and aqueous `NaOH,` which of the following compounds will form iodoform ?A. `CH_(3)CH_(2)CH_(2)CH_(2)CHO`B. `CH_(3)CH_(2)COCH_(2)CH_(3)`C. `(CH_(3)CH_(2)CH_(2)CH_(2)CH_(2)OH`D. `CH_(3)CH_(2)CH_(2)CH(OH)CH_(3)` |
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Answer» Correct Answer - D `CH_(3)CH_(2)CH_(2)CH(OH)CH_(3)overset([O])rarr underset("Keto methyl group")(CH_(3)CH_(2)CH_(2)COCH_(3))` `underset("Keto methyl group")(CH_(3)CH_(2)CH_(2)overset(O)overset(||)C-CH_(3))+3l_(2)+4NaOH rarr` `CH_(3)CH_(2)CH_(2)overset(O)overset(||)C-overset(-)Ooverset(+)Na+underset("yellow (ppt)")underset("Iodoform")(CHl_(3))+3H_(2)O+"3 Nal"` |
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