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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.
| 401. |
4-Methoxacetophenone can be prepared from anisole by `:`A. Reimer-Tiemann reactionB. Wurtz reactionC. Cannizzaro reactionD. Friedel-Crafts reaction |
| Answer» Correct Answer - D | |
| 402. |
Which of the following is best reagent used for following conversion ? A. `H_2` /NiB. `H_3O^+`C. `NaBH_4`D. Zn.Hg + HCl |
| Answer» Correct Answer - C | |
| 403. |
Which is hydrated to a maximum extent ?A. `CH_3-underset(CH_3)underset|oversetoverset(CH_3)|C-CH=CH_2`B. `CH_3CH=CH_2`C. `CH_2=CH_2`D. `CH-=CH` |
| Answer» Correct Answer - A | |
| 404. |
What type of isomerism is exhibited by pentanol?A. PositionB. ChainC. OpticalD. All of these |
| Answer» Correct Answer - D | |
| 405. |
Compound with molecular formula `C_3H_8O` on vigorous oxidation produces an acid `C_3H_6O_2`. It isA. `3^@` alcoholB. `2^@` alcoholC. `1^@` alcoholD. not necessary |
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Answer» Correct Answer - C Alcohol and acid contains same number of carbon atoms, hence it is primary alcohol. |
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| 406. |
Hydration of following compound gives A. B. C. D. |
| Answer» Correct Answer - C | |
| 407. |
Which of the following are functional isomers?A. Alcohols and ethersB. Alcohols and acidsC. Alcohols and aldehydesD. Alcohols and ketones |
| Answer» Correct Answer - D | |
| 408. |
Anisole can be prepared by the action of Methyl iodide on sodium phenate. The reaction is calledA. Fittig reactionB. Etard reactionC. Wurtz reactionD. Williamson reaction |
| Answer» Correct Answer - D | |
| 409. |
Acetone is treated with sodium amalgam and water gives,A. `(CH_3)_2CHOH`B. `CH_3CH_2CH_2OH`C. `C_2H_5OH`D. `CH_3CH_2COOH` |
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Answer» Correct Answer - A `CH_3COCH_3 + 2H overset(NaHg + H_2O)to (CH_3)_2CHOH` |
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| 410. |
In hydroboration oxidation of alkene , the initial attack isA. boronB. NaOHC. `H_2O_2`D. `H^+` |
| Answer» Correct Answer - A | |
| 411. |
What reagent can bring about following conversion A. `CrO_3`B. acidic `KMnO_4`C. dil. `H_2SO_4`D. dil. KOH |
| Answer» Correct Answer - C | |
| 412. |
How many `3^@` alcohols are possible for `C_3H_8O`? |
| Answer» Correct Answer - A | |
| 413. |
Hydration :A. takes place through carbocationB. is a reversible processC. follows electrophilic additionD. follows all of the above |
| Answer» Correct Answer - D | |
| 414. |
2-methyl 2-pentanol is prepared from acetone and what?A. `C_2H_5MgI`B. `(CH_3)_3CMgI`C. 2-molecules of `CH_3MgI`D. `CH_3CH_2CH_2MgI` |
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Answer» Correct Answer - D 2-methyl 2-pentanol is `3^@` alcohol prepared form acetone and n-propyl magnesium iodide `H_3COCH_3+CH_3CH_2CH_2MgI underset(H_3O^+)overset"dry ether "to (CH_3)_2C(OH)CH_2CH_2CH_3+MgIOH` |
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| 415. |
Hydroboration oxidation of alkene giveA. acidsB. aldehydesC. ketonesD. alcohols |
| Answer» Correct Answer - D | |
| 416. |
Hydration of alkene producesA. `1^@` alcohols or `2^@` alcoholsB. `1^@` alcohols or `3^@` alcoholsC. 1, `2^@` and `3^@` alcoholsD. `1^@` or `2^@` or `3^@` alcohols |
| Answer» Correct Answer - D | |
| 417. |
The only primary alcohol that can be prepared by the indirect hydration of alkene isA. ethyl alcoholB. n-propyl alcoholC. isobutyl alcoholD. methyl alcohol |
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Answer» Correct Answer - A `CH_2=CH_2+H_2SO_4 overset("cold")to CH_3CH_2OSO_3H` `CH_3CH_2OSO_3H + HOH overset(Delta)to CH_3CH_2OH + H_2SO_4` Except ethanol, no other `1^@` alcohol can be prepared by this method as the addition of `H_2SO_4` , follows Markownikoffs of rule. Generally `2^@` and `3^@` alcohols are obtained |
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| 418. |
In hydration of alkene first step isA. nucleophilic attack of water on carbocationB. deportonation of carbocationC. protonation of alkeneD. attack of `H_3O^+` |
| Answer» Correct Answer - D | |
| 419. |
Reaction intermediate in hydration of alkene isA. carbanionB. carbon free radicalsC. carbocationD. carbene |
| Answer» Correct Answer - C | |
| 420. |
In the hydration of an alkene carbocation is formed from :A. carbanionB. oxonium ionC. hydroxide ionD. hydride ion |
| Answer» Correct Answer - B | |
| 421. |
Ether on hydrolysis gives : (a) aldehyde (b) alcohol (c) acid (d) ester |
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Answer» Option : (c) acid |
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| 422. |
Which one of the following reagent can differentiate between `C_(2)H_(4)OH and CH_(3)OH`?A. `H_(2)O`B. `Na_(2)CO_(3)+l_(2)`C. `NH_(3)`D. `HCl` |
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Answer» Correct Answer - B `CH_(3)OH and C_(2)H_(5)OH` can be differentiated by using `Na_(2)CO_(3)` and `l_(2)` (Iodoform test). `C_(2)H_(5)OH` gives yellow precipitate of `CHl_(3)` whereas `CH_(3)OH` does not react with it. `C_(2)H_(5)OH+4I_(2)+Na_(2)CO_(3)rarrunderset("(yellow ppt.)")underset("lodoform")(CHI_(3))` `CH_(3)OH+I_(2)+Na_(2)CO_(3) rarr "No reaction"` |
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| 423. |
Which of the following react with benzoic acid to form enthy`1` benzoate?A. Cinnamic acidB. EthylalcoholC. Sodium ethoxideD. Ethyl chloride |
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Answer» Correct Answer - B When benzoic acid reacts with Ethyl alcohol in the presence of sulphuric acid Ethyl benzoate is formed. This is known as esterification. `underset("Benzoic acid")(C_(6)H_(5)COOH)+underset("Ethyl alcohol")(C_(2)H_(5)OH)overset(H_(2)SO_(4))rarrunderset("Ethyl benzoate ")(C_(6)H_(5)COOC_(2)H_(5))+underset("water")(H_(2)O)` |
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| 424. |
Which of the following compounds is used to prepare bakelite resin?(a) Acetaldehyde(b) Ethanol (c) Phenol (d) Methyl amine |
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Answer» Option : (d) Methyl amine |
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| 425. |
Reason for excessive solubility of alcohol in water is due toA. covalent bondingB. H- bonding with `H_2O `C. ionic bondingD. Lewis base character |
| Answer» Correct Answer - B | |
| 426. |
Ethers are inactive because they do not containA. active atomB. active groupC. multiple bondD. all of these |
| Answer» Correct Answer - D | |
| 427. |
Natalite is a mixture of,A. diethyl ether and methanolB. diethyl ether and ethanolC. dimethyl ether and methanolD. dimethyl ether and ethanol |
| Answer» Correct Answer - B | |
| 428. |
P is an alcohl which on heating with `Al_(2)O_(3)` forms an alkene Q.Q on ozonolysis produces R and S. When the mixture of R and S is heated with NaOH, a redox reaction takes place and a mixture of an acid salt and alcohol is formed. The compounds R and S are :A. `CH_(3)-overset(CH_(3))overset(|)(C)O, CH_(2)=O`B. `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH=O, CH_(3)CH=O`C. `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH=O+CH_(2)=O`D. `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-CH=O+CH_(2)=O` |
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Answer» Correct Answer - C |
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| 429. |
Oxidation means,A. addition of oxygenB. increase in oxidation stateC. loss of electronD. all of these |
| Answer» Correct Answer - D | |
| 430. |
Which statement is not correct about the alcohols?A. Alcohols involves H-bondingB. Alcohols evaporates quickly than waterC. Alcohols of less number of carbon atoms are less soluble than more number of carbon atomsD. All of these |
| Answer» Correct Answer - C | |
| 431. |
Find out correct reducing agent in following conversion. `CH_3-CH_2-CH_2-COOH to CH_3-CH_2-CH_2-CH_2-OH`A. `H_2+Ni`B. `NaBH_4`C. NaHg + `H_2O`D. `LiAlH_4` |
| Answer» Correct Answer - D | |
| 432. |
Which of the following compound have covalent and ionic bond ?A. R-OHB. H-O-HC. R-XD. R-ON a |
| Answer» Correct Answer - D | |
| 433. |
Which of the following is less acidic in nature ?A. B. C. D. |
| Answer» Correct Answer - D | |
| 434. |
Which of the following represents the increasing order of boiling points of (1), (2), and (3)?(1) CH3 – CH2 – CH2 – CH2 – OH (2) (CH3)2 CH – O – CH3 (3) (CH3)3 COH A. (1) < (2) < (3) B. (2) < (1) < (3) C. (3) < (2) < (1) D. (2) < (3) < (1) |
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Answer» Correct answer is (a) (1) < (2) < (3) |
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| 435. |
Which of the following reaction will give ionic organic product on reaction ?A. CH3 – CH2 – OH + Na B. CH3 – CH2 – OH + SOCl2 C. CH3 – CH2 – OH + PCl5 D. CH3 – CH2 – OH + H2SO4 |
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Answer» Correct answer is C. CH3 – CH2 – OH + PCl5 |
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| 436. |
Which of the following reagents is best for the following conversion?(a) LiAlH4(b) H3O+(c) H2/Ni, 453 K(d) Zn - Hg/Conc.HCl |
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Answer» Option : (a) LiAlH4 |
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| 437. |
Which is the best reagent for carrying out following conversion ?A. LiAlH4 B. Conc. H2SO4, H2O C. H2/Pd D. B2H6, H2O2 – NaOH |
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Answer» Correct answer is B. Conc. H2SO4, H2O |
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| 438. |
The C – O – C bond angle in dimethyl ether is ..... |
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Answer» The C – O – C bond angle in dimethyl ether is 110°. |
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| 439. |
Phenol gives characteristic colour with :(a) iodine solution (b) bromine water (c) ammonium hydroxide (d) aqueous ferric chloride solution |
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Answer» Option : (d) aqueous ferric chloride solution |
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| 440. |
Which of the following is not usefull for the synthesis of ether ?A. B. `CH_2N_2 + R-OH overset(HBF_4)to `C. D. `2ROH overset(Conc. H_2SO_4 //413 K)to` |
| Answer» Correct Answer - A | |
| 441. |
In the reaction `R-S-Runderset(KMnO_(4))overset([O])(rarr)X`, the product X is `:`A. a sulphoxideB. a sulphoneC. an alkaneD. an alkene |
| Answer» Correct Answer - B | |
| 442. |
Product , the product is `:`A. `ICH_(2)CH_(2)CH_(2)CH_(2)I`B. `ICH_(2)CH_(2)CH_(2)CH_(2)OH`C. bothD. none |
| Answer» Correct Answer - C | |
| 443. |
Which among the following is notuseful for the synthesis of ether ?A. B. `C_(2)H_(5)O^(-)Na+(CH_(3))_(2)SO_(4)rarrC_(2)H_(5)OCH_(3)`C. `(CH_(3))_(3)CBr+CH_(3)CH_(2)ONararr (CH_(3))_(3)C-O-CH_(2)CH_(3)`D. |
| Answer» Correct Answer - C | |
| 444. |
An hypothetical compound does not react with sodium metal. Which type of compound behave like this?A. AlcoholB. PhenolsC. EthersD. Acid |
| Answer» Correct Answer - C | |
| 445. |
Diethyl ether with cold HI yields,A. `C_2H_5I`B. `C_2H_5OH`C. `C_2H_5I` and `C_2H_5OH`D. none of these |
| Answer» Correct Answer - C | |
| 446. |
Which of the following does not react with sodium metal ?A. `(CH_(3))_(2)O`B. `CH_(3)CH_(2)OH`C. `CH_(3)COOH`D. `C_(6)H_(5)OH` |
| Answer» Correct Answer - A | |
| 447. |
on reaction with `CH_(3)OH` in presence of `H^(+)` gives `:`A. B. C. D. |
| Answer» Correct Answer - C | |
| 448. |
`A` and `B` are:A. B. C. D. |
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Answer» Correct Answer - B `NaBH_(4)` clearly reduces carbony`1` group, protecting the double bond. |
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| 449. |
Diethyl ether does not react withA. dil.`H_2SO_4`B. HIC. `CH_3COOH`D. `PCl_5` |
| Answer» Correct Answer - C | |
| 450. |
Dipole moment of `CH_(3)CH_(2)CH_(3)(I),CH_(3)CH_(2)OH(II)` and `CH_(3)CH_(2)F(III)` is in orderA. `I lt II lt III`B. `I lt IIlt III`C. `I lt III lt II`D. `III lt I lt II` |
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Answer» Correct Answer - A Higher the electronegativity between `C-X`, higher will be the dipole moment |
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