578 + Interview Questions in ALDEHYDES IN GENERAL AWARENESS Page 5 InterviewSolution

201.	`C_(3)H_(6)O` showsA. chain isomerismB. position isomerismC. metamerismD. functional isomerism
Answer» Correct Answer - D

Discussion

202.	Total number of isomeric ketones can be calculated by formulaA. `I = 2^(n-3) - 1`B. `I = 2^(n-2)`C. `I = 2^(n-2) - 1`D. `I = 2^(n)`
Answer» Correct Answer - A

Discussion

203.	Ketones are isomeric withA. alcoholsB. aldehydesC. esterD. acetic acid
Answer» Correct Answer - B

Discussion

204.	How many aldehydes are possible for molecular formual `C_(4)H_(8)O` ?A. 2B. 3C. 4D. 5
Answer» Correct Answer - A

Discussion

205.	Which of the following substance will give amide, when it reacts with `NH_(3)` ?A. `CH_(3)X`B. `CH_(3)NH_(2)`C. `CH_(3)COCl`D. `(CH_(3)CO)_(2)O`
Answer» Correct Answer - C We know that , `CH_(3) COCl + NH_(3) overset(Delta) to CH_(3)CONH_(2) + HCl`. Thus in this reaction, acetyl chloride `(CH_(3)COCl)` when heated with ammonia `(NH_(3))` produces acetamde `(CH_(3)CONH_(2))`.

Discussion

206.	How many ketones are possible for molecular formula `C_(4)H_(8)O`?A. 1B. 2C. 3D. 4
Answer» Correct Answer - A

Discussion

207.	Of the following four reactions, formic and acetic acid differ in which respect ?A. Formation of ester with alcoholB. Replacement of hydrogen by sodiumC. Reduction of Fehling solutionD. Blue litmus reaction
Answer» Correct Answer - C

Discussion

208.	Formic acid is a stronger acid than acetic acid . This is due to the fact thatA. formic acid is reducing agentB. formic acid molecule is of smaller sizeC. there is no alkyl group on `alpha` - carbon in formic acidD. formic acid does not undergo association
Answer» Correct Answer - C Electron donating alkyl groups decrease the strength of acid. That is why formic acid is strongest acid than acetic acid.

Discussion

209.	The structural formula of the compound isomeric with acetone isA. `CH_(3)CH_(2)CHO`B. `CH_(3)CHO`C. `CH_(3)CH_(2)OH`D. none of these
Answer» Correct Answer - A

Discussion

210.	The correct acidity order of the following is A. (III) `gt` (IV) `gt` (II) `gt` (I)B. (IV) `gt` (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 Carboxylic acid is stronger acid than phenol.The presence of electron withdrawing group (e.g. `CI)` increasesacidic strength, while present of electron donating (e.g.`CH_(3))` decreases acidic strength.

Discussion

211.	In which case `R - COOH` is not product ?A. `R - CN + RMgX to`B. `R - CN overset(H_(3)O^(+)) to `C. `R- MgC overset(CO_(2)) to `D. `RCOR overset("oxidation ") to `
Answer» Correct Answer - A

Discussion

212.	When propanal reacts with 2- methylpropanal in presence of NaOH, four different products are formed. The reaction is known asA. aldol condensationB. cross aldol condensationC. Cannizzaro reactionD. HVZ condensation.
Answer» Correct Answer - B

Discussion

213.	Solid carbondioxide and RMgX producesA. alkanoic acidB. alkanalC. alkanoneD. alkyl alkanoate
Answer» Correct Answer - A `CO_(2) + RMgX underset(H_(3)O^(+)) overset("dry ether") to RCOOH + MgXOH`

Discussion

214.	2- methyl propane nitrile on acid hydrolysis giveA. butyric acidB. isobutyric acidC. propionic acidD. pentanoic acid
Answer» Correct Answer - B

Discussion

215.	In esterification reaction the correct order of reactivity of alcohol is ,A. `1^(0) gt 2^(0) gt 3^(0)`B. `3^(0) gt 2^(0) gt 1^(0)`C. `1^(0) gt 3^(0) gt ^(0)`D. `3^(0) gt 1^(0) gt 2^(0)`
Answer» Correct Answer - A

Discussion

216.	A compound [A] of molecular formula `C_(4)H_(9)Br` yields a compound [B] of molecular formula `C_(4)H_(10)O` when reated with aqueous `NaOH`. On oxidation [B] gives a ketone [C]. The vigorous oxidation of ketone gives ethanoic acid. Dutuce the structure of A, B and C.
Answer» `C_(2)H_(5)-underset(Br)underset(\|)(CH)-CH_(3)overset("aq NaOH")underset("NaBr")to (C_(2)H_(5))-underset(OH)underset(\|)(CH)-CH_(3)overset("oxidation")to (CH_(3))-overset(O)overset(\|\|)C-CH_(3)overset("Vigorous")underset("oxide")to2CH_(3)COOH`

Discussion

217.	Acetonitrile on acidic hydrolysis gives :(a) HCOOH (b) CH3NC (c) CH3COONa (d) CH3COOH
Answer» Option : (d) CH₃COOH

Discussion

218.	Observe the following compounds , The correct reactivity order of above compounds towards nucleophilic addition reaction is `:`A. `IIIgtIgtIIgtIV`B. `IIgtIVgtIgtIII`C. `IIIgtIIgtIVgtI`D. `IVgtIIgtIgtIII`
Answer» Correct Answer - 1 Reactivity `prop` amount of positive charge at caronly carbon.

Discussion

219.	Assertion: Hydroxyketones are not directly used in Grignard reaction. Reason : Griganard reagnts react with hydroxyl group.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 Grignard reagents are highly reactive, hence react with the hydroxyl group.

Discussion

220.	Haloform test is given by the following substanceA. `HCHO`B. `(CH_(3))_(2) CO`C. `CH_(3) CHO`D. `CH_(3) CH_(2) Cl`
Answer» Correct Answer - B and C `CH_(3)-overset(O)overset(\|\|)(C)-CH_(3)+3Cl_(2)to CH_(3)-overset(O)overset(\|\|)(C)-C Cl_(3) +3HCl` `CH_(3)-overset(O)overset(\|\|)(C)-C Cl_(3) +NaOH to CHCl_(3) +CH_(3)-overset(O)overset(\|\|)(C)-Ona`

Discussion

221.	Acetamid isA. AcidicB. BasicC. NeturalD. Amphoteric
Answer» Correct Answer - D Acetamide can behave as weak acid will as base. `CH_(3)-CO-Nh_(2)overset(P_(2)O_(5))toCH_(3)-C=H_(2)O`

Discussion

222.	Consider the following reaction. -O-overset(O)overset(\|\|)(O)-CH_(2)CH_(3)overset(Delta)to` The major product (along with an acid) isA. B. C. D.
Answer» Correct Answer - A More stable acid detivative amide is formed by nucleophilic attack of amino group of less hindered carboxyl group.

Discussion

223.	The major organic product formed in the reaction given below is " "overset([(CH_(3))_(2)CHCH_(2)AIH))underset(-80^(@)C)to`A. B. C. D.
Answer» Correct Answer - A The reaction of aluminum hydride containing bulky alkyl group, acid anhydrides are reduced to aldehydes.

Discussion

224.	Acetamid reacts with `P_(2)O_(5)` (phosphorus pontoxide) to giveA. Methyl cyanideB. Methyl cyanateC. Ethyl cyanideD. Ethyl isocyanate
Answer» Correct Answer - A `CH_(3) - CO - NH_(2) overset (P_(2)O_(2)) to CH_(3) - C = N + H_(2)O`

Discussion

225.	What is formed as the major organic product in the reaction? `CH_(3)CH_(2)-overset(O)overset(\|\|)(C)-NH_(2)+P_(4)O_(10)overset("Heat")to`A. `CH_(3) CH_(2)NH_(2)`B. `CH_(3) CH_(2)CH_(2)NH_(2)`C. `CH_(3) CH_(2)COOH`D. `CH_(3) CH_(2)CN`
Answer» Correct Answer - D Primary amide is dehydrated on heating with `P_(2)O_(5)` to give nitrile.

Discussion

226.	Arrange the following in the increasing order of recativity with `NH_(3)` (I) `CH_(2) O` (II) `CH_(3) CHO` (III) `CH_(3) - CO - Ch_(3)` (IV) `(I) CH_(2A. I `lt` II `lt` III `lt` IVB. III `lt` IV `lt` I `lt` IIC. IV `lt` III `lt` II `lt` ID. II `lt` I `lt` IV `lt` III
Answer» Correct Answer - C Reactivity follows the ease with which a nucleophile can attack at carbonyl carbon. Greater the steric hindrance at carbonyl carbon, smaller is the reactivity.

Discussion

227.	Which is most reactive in base cataysed hydroysis reaction?A. B. C. D.
Answer» Correct Answer - A Electron withrawing group increases electrophilicity amid, hence increases reactivity in base `(HO^(-))` catalysed hydrolysis.

Discussion

228.	Which of the following substances cannot be used for the replacement of `-OH` group in organic compound by `CI`?A. `S_(2) Cl_(2)`B. `SOCl_(2)`C. `PCl_(3)`D. `PCl_(5)`
Answer» Correct Answer - A Rest all are commonly used to replace `-OH by -CI` group.

Discussion

229.	Which oximes on treatment with conetreated to gives single amide?A. `CH_(3) - CH = N - OH`B. C. D.
Answer» Correct Answer - C Symmetrical oximes give single amide in Beckmann rearrangement.

Discussion

230.	Name the end product in the following series of reaction `CH_(3)COOH overset (NH_(3)) to A overset (Delta)underset (P_(2)O_(5)) to B`A. `CH_(4)`B. `CH_(3)OH`C. AcetonitrileD. Ammonium acetate
Answer» Correct Answer - C `CH_(3)COOH overset (NH_(3)) to CH_(3)CONH_(2) overset (Delta)underset (P_(2)O_(5)) to CH_(3) - C = N`

Discussion

231.	Rection by which Banzaidehyde cannot be prepared?A. B. C. D.
Answer» Correct Answer - C `Zn//Hg and HCI` reudct carboxyl group to methylene group (Clemmensen reduction).

Discussion

232.	Benzoyl chloride is prepared from benzoic acid by :A. `Cl_(2),hv`B. `SO_(2)Cl_(2)`C. `SOCl_(2)`D. `Cl_(2),H_(2)O`
Answer» Correct Answer - C `CH_(3)COOH + SOCI_(2) rarr C_(6)H_(5)COCi + SO_(2) + HCI`

Discussion

233.	The end product `B` in the sequence of reaction `R - X overset (CN^(-)) to A overset (NaOH) to B` isA. An alkaneB. A carboxylic acidC. Sodium salt of carboxylic acidD. A ketone
Answer» Correct Answer - C `R-X overset (KCN) to R - CN overset (NaOH) underset (H_(2)) to R - COONa + NH_(3)`

Discussion

234.	Assertion: Benzaldehyde is more reactive than ethanal towards nucleophilic attact. Reason : The overall effect of- `l` and `+R` effect of phenyl group decrease the electron density on the carbon atom of `gtC = O` group in benzaldehyde.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

235.	In mechanism of aldol condensation reaction the second step isA. abstraction of `alpha `- H atom carbon of aldehyde by base to form carbanionB. The attack of carbanion on carbonyl carbon atom of another molecule to form alkoxide ionC. The attck of carbonion on carbonyl carbon atom of another molecule to form oxocationD. Alkkoxide ion take proton from water to form `beta` - hydroxy aldehyde
Answer» Correct Answer - B

Discussion

236.	Which is best solventA. `H - CHO`B. `CH_(3)COCH_(3)`C. `CH_(3) - CHO`D. `CH_(3)COOH`
Answer» Correct Answer - B

Discussion

237.	Prop 1 ,3 - diphenyl 2 - en - 1 - one is crossed condensation product. Which is obtained fromA. benzophenoneB. AcetophenoneC. benzaldehydeD. Acetphenone and benzaldehyde
Answer» Correct Answer - D

Discussion

238.	Which one of the following undergoes reaction with 50% NaOH to give to corresponding alcohol and acid?(a) Phenol (b) Benzoic acid (c) Benzaldehyde (d) Butanal
Answer» Option : (c) Benzaldehyde

Discussion

239.	Arrange the following compounds in an increasing order of their indicated property :(i) Benzoic acid, 4-Nitrobenzoic acid, 3, 4-Dinitrobenzoic acid.4-Methoxybenzoic acid (acid strength)(ii) CH3CH2CH(Br)COOH,CH3CH(Br)CH2COOH(CH3)2CHCOOH, CH3CH2CH2COOH(acid strength)
Answer» (i) 4-methoxybenzoic acid < benzoic acid < 4-nitrobenzoic acid < 3,4-dinitrobenzoic acid. (ii) The overall acidic strength increases in the order : (CH₃)₂CHCOOH < CH₃CH₂CH₂COOH < CH₃CH(Br)CH₂COOH < CH₃CH₂CH(Br)COOH

239.

Arrange the following compounds in an increasing order of their indicated property :(i) Benzoic acid, 4-Nitrobenzoic acid, 3, 4-Dinitrobenzoic acid.4-Methoxybenzoic acid (acid strength)(ii) CH3CH2CH(Br)COOH,CH3CH(Br)CH2COOH(CH3)2CHCOOH, CH3CH2CH2COOH(acid strength)

Answer»

(i) 4-methoxybenzoic acid < benzoic acid < 4-nitrobenzoic acid < 3,4-dinitrobenzoic acid.

(ii) The overall acidic strength increases in the order :

(CH₃)₂CHCOOH < CH₃CH₂CH₂COOH < CH₃CH(Br)CH₂COOH < CH₃CH₂CH(Br)COOH

Discussion

240.	Arrange the following compounds in an increasing order of their property as indicated :(i) Benzoic acid, 3,4-dinitrobenzoic acid, 4-methoxybenzoic acid (acid strength).(ii) CH3CH2CH(Br)COOH, CH3CH(Br)CH2COOH, (CH3)2CHCOOH (acid strength).
Answer» (i) The overall acid strength increases in the order. 4-methoxybenzoic acid < benzoic acid < 3,4-dinitrobenzoic acid. (ii) We know that +I-effect decreases while –I-effect increases the acid strength of carboxylic acids. The overall acid strength increases in the order. (CH₃)₂CHCOOH < CH₃CH(Br)CH₂COOH < CH₃CH₂CH(Br)COOH

240.

Arrange the following compounds in an increasing order of their property as indicated :(i) Benzoic acid, 3,4-dinitrobenzoic acid, 4-methoxybenzoic acid (acid strength).(ii) CH3CH2CH(Br)COOH, CH3CH(Br)CH2COOH, (CH3)2CHCOOH (acid strength).

Answer»

(i) The overall acid strength increases in the order.

4-methoxybenzoic acid < benzoic acid < 3,4-dinitrobenzoic acid.

(ii) We know that +I-effect decreases while –I-effect increases the acid strength of carboxylic acids. The overall acid strength increases in the order. (CH₃)₂CHCOOH < CH₃CH(Br)CH₂COOH < CH₃CH₂CH(Br)COOH

Discussion

241.	Which of the following is a reducing agentA. `LiAlH_4`B. `NaBH_4`C. BothD. None of the above
Answer» Correct Answer - C

Discussion

242.	Which of the following statements is true?A. The lower members of aldehydes and ketones such as methanal, ethanal and propanone are miscible with water in all proportions, because they form hydrogen bond with waterB. Methanal is a gas at room temperatureC. Methanal is a foul smelling gasD. All
Answer» Correct Answer - D

Discussion

243.	The total number of acyclic structural isomers possible for compound with molecular formula C4H10O is ............
Answer» The total number of acyclic structural isomers possible for compound with molecular formula C₄H₁₀O is 7.

Discussion

244.	Write the uses of methanoic acid.
Answer» It is used in rubber industry for coagulating latex, it is also used in textile, dyeing, leather and electroplating industries.

Discussion

245.	Mention 2 important uses of formaline?
Answer» As a preservation for biological samples It is used in the manufacture of thermo setting plastics.

Discussion

246.	Aldol condensation will not be observed inA. ChloralB. Phenyl acetaldehydeC. HexanalD. Ethanol
Answer» Correct Answer - A Chloral `CCl_(3) CHO` has no `alpha` hydrogen atom and hence does not undergo aldol condensation.

Discussion

247.	Both the compounds 'A' and 'B' react with sodium metal to liberate hydrogen gas and react with each other to give Methylethanoate. The compounds 'A' and 'B' are :(a) C2H5 – COOH and CH3 – OH(b) C2H5 – COOH and C2H5 – OH(c) CH3 – COOH and C2H5 – OH(d) CH3 – COOH and CH3 – OH
Answer» Option : (d) CH₃ – COOH and CH₃ – OH

Discussion

248.	Among the following compounds, the one (s) that gives (gives) effervescence with aqueous `NaHCO_(3)` solution is (are) : (I) `(CH_(3)CO)_(2)O` , (II) `CH_(3)COOH` (III) `PhOH` , (IV) `CH_(3)COCHO`A. I and IIB. I and IIIC. Only IIID. I and IV
Answer» Correct Answer - A Only carboxylic acids and their derivatives like anhybride are capable to give effervescence with aqueous `NaCHO_(3)` solution, because they are more acidic as compared to `H_(2)CO_(3)` (carbonic acid) I. `(CH_(3)CO)_(2)O to 2CH_(2)COONa +H_(2)O+CO_(2)` (II). `CH_(3)COOH+NaHCO_(3) to CH_(3)COONa+H_(2)O+ CO_(2)`

Discussion

249.	An propanoyl chloride is formed when `PCl_(5)` reacts with anA. propanoic acidB. alcoholC. acetic acidD. ester
Answer» Correct Answer - A We know that, `3CH_(3)COOH + PCl_(5) to 3CH_(3)COCl + POCl_(3) + HCl`. Thus in this reaction `PCl_(5)` react with an acetic acid `(CH_(3)COOH)` to produce acetyl chloride.

Discussion

250.	Which of the following compound reacts with `NaHCO_(3)` solution to give sodium salt and carbon dioxide ?A. PhenolB. 1- propanolC. Acetic acidD. Nitric acid
Answer» Correct Answer - C We know that , `CH_(3)COOH + NaHCO_(3) to CH_(3) COONa + CO_(2) + H_(2) O`. Thus in this reaction acetic acid `(CH_(3)COOH)` reacts with `NaHCO_(3)` to give sodium salt and carbon dioxide .

Discussion

Explore topic-wise InterviewSolutions in .

`C_(3)H_(6)O` showsA. chain isomerismB. position isomerismC. metamerismD. functional isomerism

Total number of isomeric ketones can be calculated by formulaA. `I = 2^(n-3) - 1`B. `I = 2^(n-2)`C. `I = 2^(n-2) - 1`D. `I = 2^(n)`

Ketones are isomeric withA. alcoholsB. aldehydesC. esterD. acetic acid

How many aldehydes are possible for molecular formual `C_(4)H_(8)O` ?A. 2B. 3C. 4D. 5

Which of the following substance will give amide, when it reacts with `NH_(3)` ?A. `CH_(3)X`B. `CH_(3)NH_(2)`C. `CH_(3)COCl`D. `(CH_(3)CO)_(2)O`

How many ketones are possible for molecular formula `C_(4)H_(8)O`?A. 1B. 2C. 3D. 4

Of the following four reactions, formic and acetic acid differ in which respect ?A. Formation of ester with alcoholB. Replacement of hydrogen by sodiumC. Reduction of Fehling solutionD. Blue litmus reaction

Formic acid is a stronger acid than acetic acid . This is due to the fact thatA. formic acid is reducing agentB. formic acid molecule is of smaller sizeC. there is no alkyl group on `alpha` - carbon in formic acidD. formic acid does not undergo association

The structural formula of the compound isomeric with acetone isA. `CH_(3)CH_(2)CHO`B. `CH_(3)CHO`C. `CH_(3)CH_(2)OH`D. none of these

The correct acidity order of the following is A. (III) `gt` (IV) `gt` (II) `gt` (I)B. (IV) `gt` (III) `gt` (I) `gt` (II)C. (III) `gt` (II) `gt` (I) `gt` (IV)D. (II) `gt` (III) `gt` (IV) `gt` (I)

In which case `R - COOH` is not product ?A. `R - CN + RMgX to`B. `R - CN overset(H_(3)O^(+)) to `C. `R- MgC overset(CO_(2)) to `D. `RCOR overset("oxidation ") to `

When propanal reacts with 2- methylpropanal in presence of NaOH, four different products are formed. The reaction is known asA. aldol condensationB. cross aldol condensationC. Cannizzaro reactionD. HVZ condensation.

Solid carbondioxide and RMgX producesA. alkanoic acidB. alkanalC. alkanoneD. alkyl alkanoate

2- methyl propane nitrile on acid hydrolysis giveA. butyric acidB. isobutyric acidC. propionic acidD. pentanoic acid

In esterification reaction the correct order of reactivity of alcohol is ,A. `1^(0) gt 2^(0) gt 3^(0)`B. `3^(0) gt 2^(0) gt 1^(0)`C. `1^(0) gt 3^(0) gt ^(0)`D. `3^(0) gt 1^(0) gt 2^(0)`

A compound [A] of molecular formula `C_(4)H_(9)Br` yields a compound [B] of molecular formula `C_(4)H_(10)O` when reated with aqueous `NaOH`. On oxidation [B] gives a ketone [C]. The vigorous oxidation of ketone gives ethanoic acid. Dutuce the structure of A, B and C.

Acetonitrile on acidic hydrolysis gives :(a) HCOOH (b) CH3NC (c) CH3COONa (d) CH3COOH

Observe the following compounds , The correct reactivity order of above compounds towards nucleophilic addition reaction is `:`A. `IIIgtIgtIIgtIV`B. `IIgtIVgtIgtIII`C. `IIIgtIIgtIVgtI`D. `IVgtIIgtIgtIII`

Haloform test is given by the following substanceA. `HCHO`B. `(CH_(3))_(2) CO`C. `CH_(3) CHO`D. `CH_(3) CH_(2) Cl`

Acetamid isA. AcidicB. BasicC. NeturalD. Amphoteric

Consider the following reaction. -O-overset(O)overset(||)(O)-CH_(2)CH_(3)overset(Delta)to` The major product (along with an acid) isA. B. C. D.

The major organic product formed in the reaction given below is " "overset([(CH_(3))_(2)CHCH_(2)AIH))underset(-80^(@)C)to`A. B. C. D.

Acetamid reacts with `P_(2)O_(5)` (phosphorus pontoxide) to giveA. Methyl cyanideB. Methyl cyanateC. Ethyl cyanideD. Ethyl isocyanate

What is formed as the major organic product in the reaction? `CH_(3)CH_(2)-overset(O)overset(||)(C)-NH_(2)+P_(4)O_(10)overset("Heat")to`A. `CH_(3) CH_(2)NH_(2)`B. `CH_(3) CH_(2)CH_(2)NH_(2)`C. `CH_(3) CH_(2)COOH`D. `CH_(3) CH_(2)CN`

Arrange the following in the increasing order of recativity with `NH_(3)` (I) `CH_(2) O` (II) `CH_(3) CHO` (III) `CH_(3) - CO - Ch_(3)` (IV) `(I) CH_(2A. I `lt` II `lt` III `lt` IVB. III `lt` IV `lt` I `lt` IIC. IV `lt` III `lt` II `lt` ID. II `lt` I `lt` IV `lt` III

Which is most reactive in base cataysed hydroysis reaction?A. B. C. D.

Which of the following substances cannot be used for the replacement of `-OH` group in organic compound by `CI`?A. `S_(2) Cl_(2)`B. `SOCl_(2)`C. `PCl_(3)`D. `PCl_(5)`

Which oximes on treatment with conetreated to gives single amide?A. `CH_(3) - CH = N - OH`B. C. D.

Name the end product in the following series of reaction `CH_(3)COOH overset (NH_(3)) to A overset (Delta)underset (P_(2)O_(5)) to B`A. `CH_(4)`B. `CH_(3)OH`C. AcetonitrileD. Ammonium acetate

Rection by which Banzaidehyde cannot be prepared?A. B. C. D.

Benzoyl chloride is prepared from benzoic acid by :A. `Cl_(2),hv`B. `SO_(2)Cl_(2)`C. `SOCl_(2)`D. `Cl_(2),H_(2)O`

The end product `B` in the sequence of reaction `R - X overset (CN^(-)) to A overset (NaOH) to B` isA. An alkaneB. A carboxylic acidC. Sodium salt of carboxylic acidD. A ketone

Which is best solventA. `H - CHO`B. `CH_(3)COCH_(3)`C. `CH_(3) - CHO`D. `CH_(3)COOH`

Prop 1 ,3 - diphenyl 2 - en - 1 - one is crossed condensation product. Which is obtained fromA. benzophenoneB. AcetophenoneC. benzaldehydeD. Acetphenone and benzaldehyde

Which one of the following undergoes reaction with 50% NaOH to give to corresponding alcohol and acid?(a) Phenol (b) Benzoic acid (c) Benzaldehyde (d) Butanal

Arrange the following compounds in an increasing order of their indicated property :(i) Benzoic acid, 4-Nitrobenzoic acid, 3, 4-Dinitrobenzoic acid.4-Methoxybenzoic acid (acid strength)(ii) CH3CH2CH(Br)COOH,CH3CH(Br)CH2COOH(CH3)2CHCOOH, CH3CH2CH2COOH(acid strength)

Arrange the following compounds in an increasing order of their property as indicated :(i) Benzoic acid, 3,4-dinitrobenzoic acid, 4-methoxybenzoic acid (acid strength).(ii) CH3CH2CH(Br)COOH, CH3CH(Br)CH2COOH, (CH3)2CHCOOH (acid strength).

Which of the following is a reducing agentA. `LiAlH_4`B. `NaBH_4`C. BothD. None of the above

Which of the following statements is true?A. The lower members of aldehydes and ketones such as methanal, ethanal and propanone are miscible with water in all proportions, because they form hydrogen bond with waterB. Methanal is a gas at room temperatureC. Methanal is a foul smelling gasD. All

The total number of acyclic structural isomers possible for compound with molecular formula C4H10O is ............

Write the uses of methanoic acid.

Mention 2 important uses of formaline?

Aldol condensation will not be observed inA. ChloralB. Phenyl acetaldehydeC. HexanalD. Ethanol

Both the compounds 'A' and 'B' react with sodium metal to liberate hydrogen gas and react with each other to give Methylethanoate. The compounds 'A' and 'B' are :(a) C2H5 – COOH and CH3 – OH(b) C2H5 – COOH and C2H5 – OH(c) CH3 – COOH and C2H5 – OH(d) CH3 – COOH and CH3 – OH

Among the following compounds, the one (s) that gives (gives) effervescence with aqueous `NaHCO_(3)` solution is (are) : (I) `(CH_(3)CO)_(2)O` , (II) `CH_(3)COOH` (III) `PhOH` , (IV) `CH_(3)COCHO`A. I and IIB. I and IIIC. Only IIID. I and IV

An propanoyl chloride is formed when `PCl_(5)` reacts with anA. propanoic acidB. alcoholC. acetic acidD. ester

Which of the following compound reacts with `NaHCO_(3)` solution to give sodium salt and carbon dioxide ?A. PhenolB. 1- propanolC. Acetic acidD. Nitric acid