578 + Interview Questions in ALDEHYDES IN GENERAL AWARENESS Page 7 InterviewSolution

301.	Which of the following cation is involved in Tollens reagent ?A. `[Ag(NH_(3))_(2)]^(+)`B. `2OH^(-)`C. `[Ag(NH_(3))_(3)]^(+)`D. `AgNO_(3)`
Answer» Correct Answer - A

Discussion

302.	Carbonation of organometallic reagentA. is a one carbon homologationB. involves its carbanionic attacks on electron deficient carbonyl carbonC. both are correctD. none is correct
Answer» Correct Answer - C

Discussion

303.	`Xoverset(PCl_(5))(rarr)C_(2)H_(5)Cl,Yoverset(PCl_(5))(rarr)CH_(3)COCl`, X and Y are `:`A. `(C_(2)H_(5)) O and CH_(3) CO_(2)H`B. `C_(2)H_(5)l and C_(2)H_(5) CHO`C. `C_(2) H_(5) OH and CH_(3) CO_(2)H`D. `C_(2)H_(2) OH and C_(2) H_(5) CHO`
Answer» Correct Answer - C `C_(2)H_(5)OH overset(PCl_(5) )to C_(2)H_(5)Cl+POCl_(3)+HCl` `CH_(3)CO_(2)Hoverset(PCl_(5) )to CH_(3)COCl+POCl_(3)+HCl`

Discussion

304.	The correct order of increasing acidity of the followins is :A. `HCN gt ClCH_(2)COOH gt HCOOH gt CH_(3) COOH`B. `HCN gt HCOOH gt ClCH_(2) COOH gt CH_(3) COOH`C. `ClCH_(2)COH gt HCOOH gt CH_(3) COOHC gt HCN`D. `ClCH_(2)COOH gt JCl gt HCOOH gt CH_(3) COOH`
Answer» Correct Answer - B HCN is a weaker acid than even carboxylic acid. Thus, `HCN gt HCOOH gt ClCH_(2) gt CHOOH gt CH_(3)COOH`

Discussion

305.	An oganic compound is boiled with alcoholic potash. The product is cooled and acidified with `HCI`. A white solid seprates out. The starting compound may beA. Ethyl benzoateB. Ethyl formateC. Ethyl acetateD. Methyl acetate
Answer» Correct Answer - A `C_(6)H_(5)COOC_(2)H_(5) + KOH(alc) rarr C_(6)H_(5)C_(2)H_(5)COOK + C_(2)H_(5)OH overset (HCI) to C_(6)H_(5)COOH + KCI`

Discussion

306.	Acids have pH ___ 7A. Equal toB. More than 7C. Less than 7D. All
Answer» Correct Answer - C

Discussion

307.	Role of 2,4-dichlorophenoxy acetic acid is used asA. fungicideB. insecticideC. herbicideD. moth repellant
Answer» Correct Answer - C 2,4- dichlorophenoxy acetic acid is used as a herbicide.

Discussion

308.	Acetic acid reacts with `PCl_(5)` to formA. `CH_(2)ClCOOH`B. `CHCl_(2)COOH`C. `CH_(2)COCl`D. `CH_(3)COOCl`
Answer» Correct Answer - C Acetic acid react with `PCl_(5)` to from acetyl chloride. `underset("Acetic acid") (CH_(3)COOH) +PCl_(5) to underset("Acetylchloride")(CH_(3)COCl)+POCl_(3)+HCl`

Discussion

309.	When `CH_(2)=CH -CO OH` is reduced with `LiAlH_(4)` the compound obtained will beA. `CH_(3)-CH_(2)-COOH`B. `CH_(2)=CH-CH_(2)OH`C. `CH_(3)CH_(2)CH_(2)OH`D. `CH_(3)CH_(2)CHO`
Answer» Correct Answer - B `LiAlH_(4)` reduces -COOH group to `CH_(2)-OH` group without affecting C=C bond.

Discussion

310.	Pentan -3- en-2-one is reduced by `LiAlH_(4)` givesA. pent -4- en-2-olB. `pent -3-en-1-olC. pent -2-olD. pent -3-en-2-ol
Answer» Correct Answer - D

Discussion

311.	`CH_(3)CHO + LiAlH_(4) to CH_(3)CH_(2)OH` Nucleophite added in this reaction isA. `AlH_(4)^(-)`B. `Li^(+)`C. `H_(-)^(+)`D. `H^(-)`
Answer» Correct Answer - D

Discussion

312.	Acetyl chloride is reduced with `LiAlH_(4)` , the product formed isA. Methyl alcoholB. Ethyl alcoholC. AcetaldehydeD. Acetone
Answer» Correct Answer - B

Discussion

313.	The carbonyl compound producing an optically active product by reaction with `LiAlH_(4)` isA. propanoneB. butanoneC. 3-pentanoneD. benzophenone.
Answer» Correct Answer - B

Discussion

314.	Reactions A. Electrophilic substitutionB. Nucleophilic substiutionC. Nucleophilic substitionD. Electrophilic addition
Answer» Correct Answer - B

Discussion

315.	Which of the following compounds is the most reactive nucleophilic addtion reaction ?A. `overset(O) overset(\|\|) (CH_(3)-C-H)`B. `overset(O) overset(\|\|) (CH_(3)-C-H_(3))`
Answer» Correct Answer - A `CH_(3)CHO` is the most reactive towards in nucleophilic addtion reaction.

Discussion

316.	Choose the correct statement regarding the physical properties of carbonyl compound.A. All aldehydes are insoluble in benzene.B. Higher aldehydes are more fragrant.C. n - Butane has more boiling point than acetone.D. Methanal and propanone are immiscible with water in all proportions.
Answer» Correct Answer - B

Discussion

317.	Which statement is false regarding acetaldehyde and acetone ?A. Both reduce ammonical silver nitrate to silver mirrorB. Both react with hydroxylamine to form oximesC. Both react with hydrazine to form hydrazone derivativeD. Both react sodium bisulphite to form addition product
Answer» Correct Answer - A

Discussion

318.	Which of the following statements is correct regarding the reactivity of benzaldehyde and propanal ?A. Benzaldehyde less reactive in electrophilic addition reactions than propanalB. Benzaldehyde more reactive in electrophilic addition reactions than propanalC. Benzaldehyde less reactive in nucleophilic addition reactions than propanalD. Benzaldehyde equally reactive in nucleophilic addition reactions than propanal
Answer» Correct Answer - C Benaldehyde is less reactive in nucleophilic addition reactions than propnal due to reasonance.

Discussion

319.	Which of the following statements are correct regarding given reaction? Labled oxygen]A. The given reaction primarily follows `S-(N)^(2)`- mechanismB. In the given reaction condition inversion occurs at the chiral carbonC. Labelled `.^(18)O` is present is formed carboxylic acid.D. The given reaction primarily follows addition/elimination mechanism
Answer» Correct Answer - A::C

Discussion

320.	Which of the following compounds will give tertiary butanol as the major product when treated with excess of MeMgBr?A. B. C. D. `CH_(3)-overset(O)overset(\|\|)C-NH_(2)`
Answer» Correct Answer - A::C

Discussion

321.	What is the net negative charge on the major product of the given species when it is treated with excess NaOH?
Answer» Correct Answer - 2

Discussion

322.	What would be the maximum number of atoms involved in the formation of newly constructed ring in the given reaction?
Answer» Correct Answer - 5

Discussion

323.	Consider the following reactions. Molecular weight of the product would increase by [Assuming that mol. Wt. of C=12, O=16, H=1 and D=2]
Answer» Correct Answer - 7

Discussion

324.	Treatment of benzoic acid with `Cl_(2)//FeCl_(3)` will giveA. p-chlorobenzoic acidB. o-chlorobenzoic acidC. 2-4-dichlorobenzoic acidD. m-chlorobenzoic acid
Answer» Correct Answer - D

Discussion

325.	In esterficationA. `OH^(-)` of acid is replaced by `C_(6)H_(5)OH`B. `H^(+)` of acid is replaced by sodium metalC. `OH^(-)` of alcohol is replaced by chlorineD. `OH^(-)` of acid is replaced by `RO^(-)` group
Answer» Correct Answer - D

Discussion

326.	Why is benzaldehyde NOT oxidized by Fehling solution?
Answer» When benzaldehyde is treated with Fehling solution, it does not reduce cupric ion (Cu⁺²). Fehling solution does not oxidise benzaldehyde. Thus, Fehling test cannot be used for aromatic aldehyde.

326.

Why is benzaldehyde NOT oxidized by Fehling solution?

Answer»

When benzaldehyde is treated with Fehling solution, it does not reduce cupric ion (Cu⁺²).

Fehling solution does not oxidise benzaldehyde.

Thus,

Fehling test cannot be used for aromatic aldehyde.

Discussion

327.	Compound (X) with molecular formula `C_(3)H_(8)O` is treated with acidified potassium dichromate to form a product (Y) with molecular formula `C_(3)H_(6)O`. (Y) does not form a shining silver mirror on warming with ammoniacal `AgNO_(3)`. (Y) when treated with an aqueous solution of `NH_(2)CONHNH_(2).HCl` and sodium acetate, gives a product (Z). The structure of (Z) isA. `CH_(3)CH_(2)CH=N NHCONH_(2)`B. `(CH_(3))_(2)C=N NHCONH_(2)`C. `(CH_(3))_(2)C=NCONHNH_(2)`D. `CH_(3)CH_(2)CH=NCONHNH_(2)`
Answer» Correct Answer - B `{:(CH_(3)-overset(H)overset(\|)underset((X))underset(CH_(3))underset(\|)C-OH overset(K_(2)Cr_(2)O_(7))underset(H^(+))to CH_(3)-underset((Y))underset(CH_(3))underset(\|)C=O),(" "underset(CH_(3)COONa)underset(+)underset(NH_(2)CONHNH_(2)*HCl)(" ")darr),(" "(CH_(3))_(2)Cunderset((Z))(=N N)HCONH_(2)):}`

Discussion

328.	Which of the following is the correct statement with respect to aldehyde and ketones?(a) Ketones are reducing agents (b) Aldehydes are good reducing agents (c) Cannizzaro reaction is an addition reaction(d) Ketones do not react with Grignard reagent
Answer» Option : (b) Aldehydes are good reducing agents

Discussion

329.	Account for the following :Cl - CH2COOH is a stronger acid than CH3COOH.
Answer» Chloroacetic acid has lower pK_a value than acetic acid; ‘Cl’ in chloroacetic acid shows –I effect, it creates less electron density on oxygen of carboxylic acid. Thus, release of proton becomes easier. In case of acetic acid, the state of affair is just opposite. Hence, chloroacetic acid is stronger than acetic acid.

Discussion

330.	Aldehyde shows functional isomerism withA. aliphatic etherB. ketonesC. dimer of ethanoic acidD. thio cyclic ether
Answer» Correct Answer - B

Discussion

331.	Which of the following is trimethyl acetaldehyde ?A. `(CH_(3))_(3) C - CH_(2) - CHO`B. `(CH_(3))_(3) C - CH_(2) - CHO`C. `(CH_(3))_(3) C - CHO`D. `(CH_(3))_(2) CH - CH(CH_(3))CHO`
Answer» Correct Answer - C

Discussion

332.	Toluene is subjected to Gatterman - Koch reaction producesA. benzaldehydeB. benzoic acidC. 2- methyl benzaldehydeD. acetophenone
Answer» Correct Answer - C

Discussion

333.	Formaldehyde gives an additive product with Methylmagnesium iodide which in aqueous hydrolysis givesA. isopropyl alcoholB. Ethyl alcoholC. methyl alcoholD. n- propyl alcohol
Answer» Correct Answer - D

Discussion

334.	Arrange the following compounds in increasing order of their boiling points.CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3
Answer» All the compounds have nearly the same atomic masses. Out of all these compounds propane is non polar and will have, as such, lowest boiling point. Dimethyl ether is polar and as such will have a higher boiling point than propane. Ethanol, more polar than dimethyl ether will have a higher boiling point than dimethyl ether. Ethanol will have the highest boiling point due to Hydrogen bonding. There for increasing order of boiling point is CH₃ - CH₂ - CH₃ < CH₃OCH₃ < CH₃CHO < CH₃CH₂OH.

334.

Arrange the following compounds in increasing order of their boiling points.CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3

Answer»

All the compounds have nearly the same atomic masses. Out of all these compounds propane is non polar and will have, as such, lowest boiling point. Dimethyl ether is polar and as such will have a higher boiling point than propane. Ethanol, more polar than dimethyl ether will have a higher boiling point than dimethyl ether. Ethanol will have the highest boiling point due to Hydrogen bonding. There for increasing order of boiling point is

CH₃ - CH₂ - CH₃ < CH₃OCH₃ < CH₃CHO < CH₃CH₂OH.

Discussion

335.	When benzaldehyde reacts with acetophenone in the presence of sodium hydroxide, then product isA. `C_(6)H_(5)CH=CHCOC_(6)H_(5)`B. `C_(6)H_(5)COCH_(2)C_(6)H_(5)`C. `C_(6)H_(5)CH=CHC_(6)H_(5)`D. `C_(6)H_(5)CH(OH)COC_(6)H_(5)`
Answer» Correct Answer - A In the presence of sodium, hydroxide, benzaldehyde reacts with acetophenone, to give phenyl cinnamate. `C_(6)H_(5)CHO+CH_(3)COC_(6) H_(5) overset(NaOH(aq))to C_(6)H_(5)CH_(4)CH=CH-overset(O)overset(\|\|)C-C_(6)H_(5)`

Discussion

336.	Which of the following oxidation reaction can be carried out with chromic acid in aqueous acetone at `5 - 10(@) C`?A. `CH_(3)(CH_(2))_(3)C-=C-underset(OH)underset(\|)(CH)-CH_(3)to CH_(3)(CH_(2))_(3)-=C-overset(O)overset(\|\|)(C)-CH_(3)`B. `CH_(3) (CH_(2))_(3) CH = CH - CH_(2) OH rarr CH_(3) (CH_(2))_(3) CH = CH - CHO`C. `C_(6) H_(5) CH_(3) rarr C_(6) H_(5) COOH`D. `CH_(3) (CH_(2))_(3) CH_(2) OH rarr CH_(3) (CH_(2))_(3) CHO`
Answer» Correct Answer - B `1(@)` Primary alcohol `overset(ZnCL_(2)//HCl) to` White turbidty only heating `2(@)` Alcohol `overset(ZnCL_(2)//HCl) to` White turbidty after `5 min` heating `3(@)` Alcohol `overset(ZnCL_(2)//HCl) to` easily in seconds

Discussion

337.	Saponification of ethyl benzoate with caustic soda as alkali givesA. Benzyl alochol and ethanoic acidB. Sodium benzoate and ethanolC. Benzoic acid and sodium ethoxideD. Phenol and ethanoic acid
Answer» Correct Answer - B

Discussion

338.	Consider the following statement acetophenone can be prepared by (1) Oxidation of l-phenylthanol (2) Recation of banzalthanol with methyl magnesium bromide (3) Fridel-Cafts reaction of benzene with aceptyl choride (4) Distillation of calcium benzoateA. `1 and 2`B. `1 and 4`C. `1 and 3`D. `3 and 4`
Answer» Correct Answer - C `C_(6) H_(5) CHOHCH_(3)underset ("1-Phenylethanol") overset(\|0\|) to C_(6) H_(5) COCH_(3)underset ("Acetophenone")` `C_(6) H_(3) COCI overset ("Fridel-Crafts") underset (reaction)to6 H_(5) COCH_(3) + HCL`

Discussion

339.	The regent that can be used to disiguish between methanoic acid and ethanoic acid isA. Ammoniacal silver nitrate solutionB. Neutral ferric chloride solutionC. Sodium carbonate solutionD. Phenolphthalein
Answer» Correct Answer - C `HCOOH` reduces ammonical silver nitrate solution, i.e., Tollens reagent but acetic does not.

Discussion

340.	Which is the most suitable regent for the following transformation ? A. `LiAlH_(4)`B. `N_(2) H_(4)//NaOH//Heat`C. `Zn (Hg) - HCl`D. `NaBH_(4)`
Answer» Correct Answer - C Clemmensenreducction of caebonyls containing additional acidic functional group

Discussion

341.	Saponification of ethyl benzoate with saustic soda as alkali givesA. Benzyl alcohol and ethanoic acidB. Sodium benzoate and ethanolC. Benzoic acid and sodium ethoxideD. Sodium benzoxide and ethanoic acid
Answer» Correct Answer - B `underset("Ethyl benzonate")(C_(6)H_(5)COOC_(2)H_(5))+NaOHoverset(Delta)to` `underset("Sod . benzonate")(C_(6)H_(5)COONa)+underset("Ethanol")(C_(2)H_(5)OH)`

Discussion

342.	Which of the following reagenets is used to distinguish acetone and acetophenone?A. `NaHSO_(3)`B. Grignard reagentC. `Na_(2) SO_(4)`D. `NH_(4) CI`
Answer» Correct Answer - A Acetone forms sodium bisulphate adduct but acetophenone does not,. Aromatic ketonesdo not gives addition product with`NaHSO_(3)`.

Discussion

343.	Regent that can difference `2`-propanol from acetone isA. `Ce (NO_(3))_(4)`B. `[Ag (NH_(3))_(2)]^(+)`C. `Na OH//I_(2)`D. `[Cu (NH_(3))_(4)]^(2+)`
Answer» Correct Answer - A Carric nitarate forms colouredsolution with alcohols but does not react with ketone.

Discussion

344.	Assertion: `(CH_(3))_(3)C COC(CH_(3))_(3)` and acetone can be distanguished by the reaction with `NaHSO_(3)`. Reason : `HSO_(3)` is the nucleophile in bisulphite addition.A. If Both assertion and reason are true reason is the correct explation of the assertion.B. If Both assertion and reason are true but reason is not the correct explation of the assertion.C. If assertion is true but reason is false.D. If assertion is false but reason is true.
Answer» Correct Answer - B `HSO_(3)^(-)`, is a bulky nucleophile hence cannot attack on sterically hindered ketones.

Discussion

345.	When acetamide is treated with `NaOBr`, the product formed isA. `CH_(3)CN`B. `CH_(3)CH_(2)NH_(2)`C. `CH_(3)NH_(2)`D. None fo above
Answer» Correct Answer - C `CH_(3)CONH_(2)overset(NaOBr)underset("Hofmann bromamider reaction")toCH_(3)NH_(2)`

Discussion

346.	The Clemmensen reduction of acetone yieldsA. EthanolB. EthanalC. PropaneD. Propanol
Answer» Correct Answer - C

Discussion

347.	Acetic acid on reaction with hydrazoic acid `(N_3 H)` in the presence of `H_2 SO_4` followed by heating and hydrolysis in basic medium gives acetamide. Methyl isocyanate `(Me-N=C=O)` is formed is an intermediate compound.A. If Both assertion and reason are true reason is a true explation of the assertion.B. If Both assertion and reason are true but the reason is not the correct explation of the assertion.C. If assertion is true but reason is false.D. If assertion is false but reason is true.
Answer» Correct Answer - D The product is `(MeNH_(2)`(methyl amine). It is an example of Claisen- Schmidt rearrangement reaction .

Discussion

348.	Clemmonsen reduction of a keton is carrid out in the presence of which of the following ?A. `H_(2)` and `Pt` as cataystB. Glycol with `KOH`C. `Zn-Hg` with `Hci`D. `LiAIH_(4)`
Answer» Correct Answer - C Clemmensen reduction involves `Zn-Hg` with HCI to convert `gt C = O gp gt CH_(2)`.

Discussion

349.	`HCOOH` shown all tests of aldehyde becauseA. It has one aldehyde groupB. It is a member of aldehydeC. All acids shows tests of aldehydeD. Does not shows any test
Answer» Correct Answer - B

Discussion

350.	Assertion: Aldehyde and keton ungergo nucleophilic addition reaction with carbon nucleophile and undergo nucleophilic addition-climination reaction with nitrogen Nucleophile. Reason : Addition of nuclephile on aldehyde and keton form retrahedral intermediate , in case of tertahedral intermediate of nitrogen nucleophile nonbonding molecule to eliminate while in case of carbon and hydrogen nucleophile nonbonding electron are not present.A. If Both assertion and reason are true reason is the correct explation of the assertion.B. If Both assertion and reason are true but reason is not the correct explation of the assertion.C. If assertion is true but reason is false.D. If assertion is false but reason is true.
Answer» Correct Answer - A

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following cation is involved in Tollens reagent ?A. `[Ag(NH_(3))_(2)]^(+)`B. `2OH^(-)`C. `[Ag(NH_(3))_(3)]^(+)`D. `AgNO_(3)`

Carbonation of organometallic reagentA. is a one carbon homologationB. involves its carbanionic attacks on electron deficient carbonyl carbonC. both are correctD. none is correct

`Xoverset(PCl_(5))(rarr)C_(2)H_(5)Cl,Yoverset(PCl_(5))(rarr)CH_(3)COCl`, X and Y are `:`A. `(C_(2)H_(5)) O and CH_(3) CO_(2)H`B. `C_(2)H_(5)l and C_(2)H_(5) CHO`C. `C_(2) H_(5) OH and CH_(3) CO_(2)H`D. `C_(2)H_(2) OH and C_(2) H_(5) CHO`

The correct order of increasing acidity of the followins is :A. `HCN gt ClCH_(2)COOH gt HCOOH gt CH_(3) COOH`B. `HCN gt HCOOH gt ClCH_(2) COOH gt CH_(3) COOH`C. `ClCH_(2)COH gt HCOOH gt CH_(3) COOHC gt HCN`D. `ClCH_(2)COOH gt JCl gt HCOOH gt CH_(3) COOH`

An oganic compound is boiled with alcoholic potash. The product is cooled and acidified with `HCI`. A white solid seprates out. The starting compound may beA. Ethyl benzoateB. Ethyl formateC. Ethyl acetateD. Methyl acetate

Acids have pH ___ 7A. Equal toB. More than 7C. Less than 7D. All

Role of 2,4-dichlorophenoxy acetic acid is used asA. fungicideB. insecticideC. herbicideD. moth repellant

Acetic acid reacts with `PCl_(5)` to formA. `CH_(2)ClCOOH`B. `CHCl_(2)COOH`C. `CH_(2)COCl`D. `CH_(3)COOCl`

When `CH_(2)=CH -CO OH` is reduced with `LiAlH_(4)` the compound obtained will beA. `CH_(3)-CH_(2)-COOH`B. `CH_(2)=CH-CH_(2)OH`C. `CH_(3)CH_(2)CH_(2)OH`D. `CH_(3)CH_(2)CHO`

Pentan -3- en-2-one is reduced by `LiAlH_(4)` givesA. pent -4- en-2-olB. `pent -3-en-1-olC. pent -2-olD. pent -3-en-2-ol

`CH_(3)CHO + LiAlH_(4) to CH_(3)CH_(2)OH` Nucleophite added in this reaction isA. `AlH_(4)^(-)`B. `Li^(+)`C. `H_(-)^(+)`D. `H^(-)`

Acetyl chloride is reduced with `LiAlH_(4)` , the product formed isA. Methyl alcoholB. Ethyl alcoholC. AcetaldehydeD. Acetone

The carbonyl compound producing an optically active product by reaction with `LiAlH_(4)` isA. propanoneB. butanoneC. 3-pentanoneD. benzophenone.

Reactions A. Electrophilic substitutionB. Nucleophilic substiutionC. Nucleophilic substitionD. Electrophilic addition

Which of the following compounds is the most reactive nucleophilic addtion reaction ?A. `overset(O) overset(||) (CH_(3)-C-H)`B. `overset(O) overset(||) (CH_(3)-C-H_(3))`

Choose the correct statement regarding the physical properties of carbonyl compound.A. All aldehydes are insoluble in benzene.B. Higher aldehydes are more fragrant.C. n - Butane has more boiling point than acetone.D. Methanal and propanone are immiscible with water in all proportions.

Which statement is false regarding acetaldehyde and acetone ?A. Both reduce ammonical silver nitrate to silver mirrorB. Both react with hydroxylamine to form oximesC. Both react with hydrazine to form hydrazone derivativeD. Both react sodium bisulphite to form addition product

Which of the following compounds will give tertiary butanol as the major product when treated with excess of MeMgBr?A. B. C. D. `CH_(3)-overset(O)overset(||)C-NH_(2)`

What is the net negative charge on the major product of the given species when it is treated with excess NaOH?

What would be the maximum number of atoms involved in the formation of newly constructed ring in the given reaction?

Consider the following reactions. Molecular weight of the product would increase by [Assuming that mol. Wt. of C=12, O=16, H=1 and D=2]

Treatment of benzoic acid with `Cl_(2)//FeCl_(3)` will giveA. p-chlorobenzoic acidB. o-chlorobenzoic acidC. 2-4-dichlorobenzoic acidD. m-chlorobenzoic acid

In esterficationA. `OH^(-)` of acid is replaced by `C_(6)H_(5)OH`B. `H^(+)` of acid is replaced by sodium metalC. `OH^(-)` of alcohol is replaced by chlorineD. `OH^(-)` of acid is replaced by `RO^(-)` group

Why is benzaldehyde NOT oxidized by Fehling solution?

Which of the following is the correct statement with respect to aldehyde and ketones?(a) Ketones are reducing agents (b) Aldehydes are good reducing agents (c) Cannizzaro reaction is an addition reaction(d) Ketones do not react with Grignard reagent

Account for the following :Cl - CH2COOH is a stronger acid than CH3COOH.

Aldehyde shows functional isomerism withA. aliphatic etherB. ketonesC. dimer of ethanoic acidD. thio cyclic ether

Which of the following is trimethyl acetaldehyde ?A. `(CH_(3))_(3) C - CH_(2) - CHO`B. `(CH_(3))_(3) C - CH_(2) - CHO`C. `(CH_(3))_(3) C - CHO`D. `(CH_(3))_(2) CH - CH(CH_(3))CHO`

Toluene is subjected to Gatterman - Koch reaction producesA. benzaldehydeB. benzoic acidC. 2- methyl benzaldehydeD. acetophenone

Formaldehyde gives an additive product with Methylmagnesium iodide which in aqueous hydrolysis givesA. isopropyl alcoholB. Ethyl alcoholC. methyl alcoholD. n- propyl alcohol

Arrange the following compounds in increasing order of their boiling points.CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3

When benzaldehyde reacts with acetophenone in the presence of sodium hydroxide, then product isA. `C_(6)H_(5)CH=CHCOC_(6)H_(5)`B. `C_(6)H_(5)COCH_(2)C_(6)H_(5)`C. `C_(6)H_(5)CH=CHC_(6)H_(5)`D. `C_(6)H_(5)CH(OH)COC_(6)H_(5)`

Saponification of ethyl benzoate with caustic soda as alkali givesA. Benzyl alochol and ethanoic acidB. Sodium benzoate and ethanolC. Benzoic acid and sodium ethoxideD. Phenol and ethanoic acid

Consider the following statement acetophenone can be prepared by (1) Oxidation of l-phenylthanol (2) Recation of banzalthanol with methyl magnesium bromide (3) Fridel-Cafts reaction of benzene with aceptyl choride (4) Distillation of calcium benzoateA. `1 and 2`B. `1 and 4`C. `1 and 3`D. `3 and 4`

The regent that can be used to disiguish between methanoic acid and ethanoic acid isA. Ammoniacal silver nitrate solutionB. Neutral ferric chloride solutionC. Sodium carbonate solutionD. Phenolphthalein

Which is the most suitable regent for the following transformation ? A. `LiAlH_(4)`B. `N_(2) H_(4)//NaOH//Heat`C. `Zn (Hg) - HCl`D. `NaBH_(4)`

Saponification of ethyl benzoate with saustic soda as alkali givesA. Benzyl alcohol and ethanoic acidB. Sodium benzoate and ethanolC. Benzoic acid and sodium ethoxideD. Sodium benzoxide and ethanoic acid

Which of the following reagenets is used to distinguish acetone and acetophenone?A. `NaHSO_(3)`B. Grignard reagentC. `Na_(2) SO_(4)`D. `NH_(4) CI`

Regent that can difference `2`-propanol from acetone isA. `Ce (NO_(3))_(4)`B. `[Ag (NH_(3))_(2)]^(+)`C. `Na OH//I_(2)`D. `[Cu (NH_(3))_(4)]^(2+)`

When acetamide is treated with `NaOBr`, the product formed isA. `CH_(3)CN`B. `CH_(3)CH_(2)NH_(2)`C. `CH_(3)NH_(2)`D. None fo above

The Clemmensen reduction of acetone yieldsA. EthanolB. EthanalC. PropaneD. Propanol

Clemmonsen reduction of a keton is carrid out in the presence of which of the following ?A. `H_(2)` and `Pt` as cataystB. Glycol with `KOH`C. `Zn-Hg` with `Hci`D. `LiAIH_(4)`

`HCOOH` shown all tests of aldehyde becauseA. It has one aldehyde groupB. It is a member of aldehydeC. All acids shows tests of aldehydeD. Does not shows any test