Aldehyde and Ketone Test 1

Total Questions:50 Total Time: 75 Min

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Questions 1 of 50

Question:Glyoxal is

Answers Choices:

\(C{H_2}O - C{H_2}O\)

\(\mathop {C{H_2}OH}\limits_{\mathop {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}\limits_{C{H_2}OH} } \)

\(\mathop {CHO}\limits_{\mathop {|\,\,\,\,\,\,\,\,}\limits_{CHO} } \)

\(\mathop {C{H_2}OH}\limits_{\mathop {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}\limits_{CHO\,\,\,\,\,} } \)

Questions 2 of 50

Question:Aldehydes are isomeric with

Answers Choices:

Ketones

Ethers

Alcohols

Fatty acids

Questions 3 of 50

Question:Which of the following compounds does not contain an \( - OH\) group

Answers Choices:

Phenol

Carboxylic acid

Aldehydes

Alcohols

Questions 4 of 50

Question:IUPAC name of \(C{H_3}COC{H_3}\) is

Answers Choices:

Acetone

2-propanone

Dimethyl ketone

Propanal

Questions 5 of 50

Question:In the following reaction, product P is $$R - \mathop {\mathop {C - }\limits^{||\,\,\,\,} }\limits^{O\,\,\,} Cl\mathop {\buildrel {{H_2}} \over \longrightarrow }\limits_{Pd - BaS{O_4}} P$$

Answers Choices:

\(RC{H_2}OH\)

\(R\,COOH\)

\(RCHO\)

\(RC{H_3}\)

Questions 6 of 50

Question:Acetophenone is prepared from

Answers Choices:

Rosenmund reaction

Sandmayer reaction

Wurtz reaction

Friedel craft reaction

Questions 7 of 50

Question:Compound which gives acetone on ozonolysis

Answers Choices:

\(C{H_3} - CH = CH - C{H_3}\)

\({(C{H_3})_2}C = C{(C{H_3})_2}\)

\({C_6}{H_5}CH = C{H_2}\)

\(C{H_3}CH = C{H_2}\)

Questions 8 of 50

Question:$$C{H_3} - \mathop C\limits_{\mathop {||}\limits_O } - C{H_2} - COO{C_2}{H_5}\mathop {\buildrel {NaOH} \over \longrightarrow }\limits_{{H_2}O} A,$$

Product "A" in the reaction is

Answers Choices:

\(C{H_3}COOH\)

\({C_2}{H_5}OH\)

\(C{H_3}COC{H_3}\)

\({C_2}{H_5}CHO\)

2 and 3 are correct

Questions 9 of 50

Question:On heating calcium acetate and calcium formate, the product formed is

Answers Choices:

\(C{H_3}COC{H_3}\)

\(C{H_3}CHO\)

\(HCHO + CaC{O_3}\)

\(C{H_3}CHO + CaC{O_3}\)

Questions 10 of 50

Question:Which of the following compound gives a ketone with Grignard reagent

Answers Choices:

Formaldehyde

Ethyl alcohol

Methyl cyanide

Methyl iodide

Questions 11 of 50

Question:In the Rosenmund's reduction, \(BaS{O_4}\) taken with catalyst Pd acts as

Answers Choices:

Promotor

Catalytic poison

Cooperator

Absorber

Questions 12 of 50

Question:The Clemmenson reduction of acetone yields

Answers Choices:

Ethanol

Ethanal

Propane

Propanol

Questions 13 of 50

Question:Ethyne on reaction with water in the presence of \(HgS{O_4}\)\(\mathop {C{H_3} - C{H_2} - C - C{H_3}}\limits^{\mathop {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||}\limits^{\,\,\,\,\,\,\,\,\,\,\,\,O} } \)and \({H_2}S{O_4}\) gives

Answers Choices:

Acetone

Acetaldehyde

Acetic acid

Ethyl alcohol

Questions 14 of 50

Question:\(C{H_3} - C{H_2} - C \equiv CH\mathop \to \limits_{{H_2}S{O_4}}^{HgS{O_4}} A\),compound A is

Answers Choices:

\(C{H_3} - C{H_2} - \mathop {\mathop C\limits^{||} }\limits^O - C{H_3}\)

\(C{H_3} - C{H_2} - C{H_2} - CHO\)

\(C{H_3} - C{H_2} - C{H_2} - COOH\)

None of these

Questions 15 of 50

Question:When a mixture of methane and oxygen is passed through heated molybdenum oxide, the main product formed is

Answers Choices:

Methanoic acid

Ethanal

Methanol

Methanal

Questions 16 of 50

Question:Benzoin is

Answers Choices:

Compound containing an aldehyde and a ketonic group

\(\alpha ,\beta \)-unsaturated acid

\(\alpha \)-hydroxy aldehyde

\(\alpha \)-hydroxy ketone

Questions 17 of 50

Question:Which one of the following pairs is not correctly matched

Answers Choices:

\( > C = O \to > C{H_2}\)

\( > C = O \to > CHOH\)

\( - COCl \to CHO\)

\( - C \equiv N \to CHO\)

Questions 18 of 50

Question:Which of the following gives aldol condensation reaction

Answers Choices:

\({C_6}{H_5}OH\)

\({C_6}{H_5} - \mathop {\mathop {C - }\limits^{||\,\,\,} }\limits^{O\,\,} {C_6}{H_5}\)

\(C{H_3}C{H_2} - \mathop {\mathop {C - }\limits^{||\,\,\,} }\limits^{O\,\,} C{H_3}\)

\({(C{H_3})_3}C - \mathop {\mathop {C - }\limits^{||\,\,\,} }\limits^{O\,\,} C{H_3}\)

Questions 19 of 50

Question:Which of the following products is formed when benzaldehyde is treated with \(C{H_3}MgBr\) and the addition product so obtained is subjected to acid hydrolysis

Answers Choices:

Secondary alcohol

A primary alcohol

Phenol

Tert-Butyl alcohol

Questions 20 of 50

Question:Aldol condensation will not be observed in

Answers Choices:

Chloral

Phenyl acetaldehyde

Hexanal

Ethanol

Questions 21 of 50

Question:Which of the following will not give iodoform test

Answers Choices:

Ethanal

Ethanol

2-propanone

3-pentanone

Questions 22 of 50

Question:Which of the following will not give the iodoform test

Answers Choices:

Acetophenone

Ethanal

Benzophenone

Ethanol

Questions 23 of 50

Question:Haloform test is given by the following substance

Answers Choices:

HCHO

\({(C{H_3})_2}CO\)

\(C{H_3}OC{H_3}\)

\(C{H_3}C{H_2}Cl\)

Questions 24 of 50

Question:One mole of an organic compound requires 0.5 mole of oxygen to produce an acid. The compound may be

Answers Choices:

Alcohol

Ether

Ketone

Aldehyde

Questions 25 of 50

Question:Aldehydes can be oxidised by

Answers Choices:

Tollen's reagent

Fehling solution

Benedict solution

All of these

Questions 26 of 50

Question:Silver mirror is a test for

Answers Choices:

Aldehydes

Thio alcohols

Amines

Ethers

Questions 27 of 50

Question:The product formed by the reaction of chlorine with benzaldehyde in the absence of a catalyst is

Answers Choices:

Chlorobenzene

Benzyl chloride

Benzoyl Chloride

o-Chlorobenzaldehyde

Questions 28 of 50

Question:Which of the following compound is resistant to nucleophilic attack by hydroxyl ions

Answers Choices:

Methyl acetate

Acetonitrile

Dimethyl ether

Acetamide

Questions 29 of 50

Question:Glucose molecule reacts with X number of molecules of phenylhydrazine to yield osazone. The value of X is

Answers Choices:

One

Two

Three

Four

Questions 30 of 50

Question:Aldol condensation involving \(C{H_3}CHO + C{H_3}CHO\) gives the product

Answers Choices:

\(C{H_3}CHOHC{H_2}CHO\)

\(C{H_3}COC{H_2}C{H_3}\)

\(C{H_3}CH = C{H_2}\)

None of these

Questions 31 of 50

Question:Enol content is highest in

Answers Choices:

Acetone

Acetophenone

Acetic acid

Acetyl acetone

Questions 32 of 50

Question:Which one of the following reacts with HCN and Tollen's reagent, but is not oxidised by Fehling's solution

Answers Choices:

Methanal

Ethanal

Benzaldehyde

Acetone

Questions 33 of 50

Question:\(C{H_3}CHO + C{H_3}MgBr \to {\rm{Product}} \to A\)What is A ?

Answers Choices:

Primary alcohol

Secondary alcohol

Tertiary alcohol

Ketone

Questions 34 of 50

Question:Which gives lactic acid on hydrolysis after reacting with HCN

Answers Choices:

\(HCHO\)

\(C{H_3}CHO\)

\({C_6}{H_5}CHO\)

\(C{H_3}COC{H_3}\)

Questions 35 of 50

Question:\(C{H_3}CHO\) react with aqueous NaOH solution to form

Answers Choices:

3-hydroxy butanal

2-hydroxy butanal

4-hydroxy butanal

3-hydroxy butanol

Questions 36 of 50

Question:Aldehyde turns pink with

Answers Choices:

Benedict solution

Schiff reagent

Fehling solution

Tollen's reagent

Mollisch reagent

Questions 37 of 50

Question:Which of the following would undergo aldol condensation

Answers Choices:

\(CC{l_3}.CHO\)

\(C{H_3} - \mathop {\mathop {C\,\, - }\limits^{\mathop {|\,\,\,\,\,\,\,}\limits^{C{H_3}} } }\limits_{\mathop {|\,\,\,\,\,\,\,}\limits_{C{H_3}} } CHO\)

\(C{H_3}.C{H_2}.CHO\)

HCHO

Questions 38 of 50

Question:The reaction of acetaldehyde with conc. \(KMn{O_4}\) gives

Answers Choices:

\(C{H_3}COOH\)

\(C{H_3}C{H_2}OH\)

HCHO

\(C{H_3}OH\)

Questions 39 of 50

Question:Grignard's reagent reacts with ethanal (acetaldehyde) and propanone to give

Answers Choices:

Higher aldehydes with ethanal and higher ketones with propanone

Primary alcohols with ethanal and secondary alcohols with propanone

Ethers with ethanal and alcohols with propanone

Secondary alcohols with ethanal and tertiary alcohols with propanone

Questions 40 of 50

Question:Base catalysed aldol condensation occurs with

Answers Choices:

Benzaldehyde

2, 2-dimethyl propionaldehyde

Acetaldehyde

Formaldehyde

Questions 41 of 50

Question:Benzaldehyde reacts with ammonia to form

Answers Choices:

Benzaldehyde ammonia

Urotropine

Hydrobenzamide

Aniline

Questions 42 of 50

Question:Which of the following compound will react with ethanolic KCN

Answers Choices:

Ethane

Acetyl chloride

Chlorobenzene

Benzaldehyde

Questions 43 of 50

Question:Schiff's reagent gives pink colour with

Answers Choices:

Aldehydes

Ethers

Ketones

Carboxylic acid

Questions 44 of 50

Question:Acetaldehyde reacts with \(C{l_2}\) (in excess) to give

Answers Choices:

Chloral

Chloroform

Acetic acid

Trichloroacetic acid

Questions 45 of 50

Question:The order of susceptibility of nucleophilic attack on aldehydes follows the order

Answers Choices:

1\(^\circ \) > 3\(^\circ \) > 2\(^\circ \)

1\(^\circ \) > 2\(^\circ \) > 3\(^\circ \)

3\(^\circ \) > 2\(^\circ \) > 1\(^\circ \)

2\(^\circ \) > 3\(^\circ \) > 1\(^\circ \)

Questions 46 of 50

Question:In Wolf-Kishner reduction, the carbonyl group of aldehydes and ketones is converted into

Answers Choices:

\( > C{H_2}\) group

\( - C{H_3}\) group

\( - C{H_2}OH\)group

\( > CHOH\) group

Questions 47 of 50

Question:Which of the following react with \(NaHS{O_3}\)

Answers Choices:

\(C{H_3}COC{H_3}\)

\(C{H_3}CHO\)

\(HCHO\)

All of these

Questions 48 of 50

Question:Which of the following does not give Fehling solution test?

Answers Choices:

Acetone

Propanal

Ethanal

Butanal

Questions 49 of 50

Question:How will you convert butan-2-one to propanoic acid?

Answers Choices:

Tollen’s reagent

Fehling’s solution

NaOH/I\(_{\rm{2}}\)/H\(^ + \)

NaOH/NaI/H\(^ + \)

Questions 50 of 50

Question:Ketones react with Mg-Hg over water gives

Answers Choices:

Pinacolone

Pinacols

Alcohols

None of these