Aldehyde and Ketone Test 2

Total Questions:50 Total Time: 75 Min

Remaining:

 

Questions 1 of 50

Question:What is the compound called if remaining two valencies of a carbonyl group are satisfied by two alkyl groups

Answers Choices:

Aldehyde

Ketone

Acid

Acid chloride

Questions 2 of 50

Question:\(C{H_3} - \mathop {\mathop C\limits_{\mathop |\limits_H } - }\limits^{\mathop {|\,\,\,}\limits^{OH} } CN\) is

Answers Choices:

Acetaldehyde cyanohydrins

Acetone cyanohydrins

Cyanoethanol

Ethanol nitrile

Questions 3 of 50

Question:Ethanedial has which functional group(s)

Answers Choices:

One ketonic

Two aldehydic

One double bond

Two double bond

Questions 4 of 50

Question:Which one of the following compounds is prepared in the laboratory from benzene by a substitution reaction

Answers Choices:

Glyoxal

Cyclohexane

Acetophenone

Hexabromo cyclohexane

Questions 5 of 50

Question:Ketones \((R - \mathop C\limits_{\mathop {||}\limits_O } - {R_1})\) where \(R = {R_1} = \) alkyl group. It can be obtained in one step by

Answers Choices:

Hydrolysis of esters

Oxidation of primary alcohol

Oxidation of secondary alcohol

Reaction of acid halide with alcohols

Questions 6 of 50

Question:Predict the product "B" in the sequence of reaction \(HC \equiv CH \to A \to B\)

Answers Choices:

\(C{H_3}COONa\)

\(C{H_3}COOH\)

\(C{H_3}CHO\)

\(C{H_3} - \mathop {\mathop {CH - }\limits_{|\,\,\,\,\,\,\,\,\,\,} }\limits_{OH\,\,} C{H_2}CHO\)

Questions 7 of 50

Question:Catalyst \(SnC{l_2}/HCl\) is used in

Answers Choices:

Stephen's reduction

Cannizzaro reaction

Clemmensen's reduction

Rosenmund's reduction

Questions 8 of 50

Question:Methyl ethyl ketone is prepared by the oxidation of

Answers Choices:

2-propanol

1-butanol

2-butanol

t-butyl alcohol

Questions 9 of 50

Question:Benzaldehyde can be prepared by oxidation of toluene by

Answers Choices:

Acidic \(KMn{O_4}\)

\({K_2}C{r_2}{O_7}\)

\(Cr{O_2}C{l_2}\)

All of these

Questions 10 of 50

Question:The oxidation of benzyl chloride with lead nitrate gives

Answers Choices:

Benzyl alcohol

Benzoic acid

Benzaldehyde

p-chlorobenzaldehyde

Questions 11 of 50

Question:$$R - CH = C{H_2} + CO + {H_2}\mathop {\buildrel {{\rm{High Temp}}} \over \longrightarrow }\limits_{{\rm{High Pressure}}} RC{H_2}C{H_2}CHO.$$The above reaction is

Answers Choices:

Mendius reaction

Oxo process

Sandorn's reaction

Stephen's reaction

Questions 12 of 50

Question:Glycerol reacts with potassium bisulphate to produce

Answers Choices:

Allyl iodide

Allyl sulphate

Acraaldehyde

Glycerol trisulphate

Questions 13 of 50

Question:Which of the following organic compounds exhibits positive Fehling test as well as iodoform test

Answers Choices:

Methanal

Ethanol

Propanone

Ethanal

Questions 14 of 50

Question:Which of the following compound will undergo self aldol condensation in the presence of cold dilute alkali

Answers Choices:

\({C_6}{H_5}CHO\)

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

\(CH \equiv C - CHO\)

\(C{H_2} = CH - CHO\)

Questions 15 of 50

Question:Acetaldehyde when treated with dilute NaOH gives

Answers Choices:

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

\(C{H_3}COOH\)

\(C{H_3} - \mathop {CH}\limits_{\mathop |\limits_{OH} } - C{H_2} - CHO\)

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

Questions 16 of 50

Question:Dimethyl ketones are usually characterised through

Answers Choices:

Tollen's reagent

Iodoform test

Schiff's test

Benedict's reagent

Questions 17 of 50

Question:The light yellow compound produced when acetone reacts with iodine and alkali, is

Answers Choices:

\(C{H_3}.CO.C{H_2}I\)

\(C{H_3}I\)

\(CH{I_3}\)

None of these

Questions 18 of 50

Question:If formaldehyde and KOH are heated, then we get

Answers Choices:

Acetylene

Methane

Methyl alcohol

Ethyl formate

Questions 19 of 50

Question:Which of the following reagent reacts differently with \(HCHO,\,C{H_3}CHO\) and \(C{H_3}COC{H_3}\)

Answers Choices:

HCN

\(N{H_2}N{H_2}\)

\(N{H_2}OH\)

\(N{H_3}\)

Questions 20 of 50

Question:\(C{H_3}CH = CHCHO\) is oxidised to \(C{H_3}CH = CHCOOH\) using

Answers Choices:

Alkaline \(KMn{O_4}\)

Selenium dioxide

Ammoniacal \(AgN{O_3}\)

All of these

Questions 21 of 50

Question:Which of the following does not turn Schiff's reagent to pink

Answers Choices:

Formaldehyde

Benzaldehyde

Acetone

Acetaldehyde

Questions 22 of 50

Question:Fehling's test is positive for

Answers Choices:

Acetaldehyde

Benzaldehyde

Ether

Alcohol

Questions 23 of 50

Question:Acetaldehyde and acetone differ in their reaction with

Answers Choices:

Sodium bisulphate

Ammonia

Phosphorus pentachloride

Phenyl hydrazine

Questions 24 of 50

Question:In which of the following reactions aromatic aldehyde is treated with acid anhydride in presence of corresponding salt of the acid to give unsaturated aromatic acid

Answers Choices:

Friedel-Craft's reaction

Perkin reaction

Wurtz reaction

None of these

Questions 25 of 50

Question:$$2C{H_3} - \mathop C\limits_{\mathop {||}\limits_O } - C{H_3}\mathop {\buildrel {Mg/Hg} \over \longrightarrow }\limits_{{H^ + }} \Pr oduct$$
product in the reaction is

Answers Choices:

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

\(C{H_3} - \mathop C\limits_{\mathop {||}\limits_O } - O - \mathop C\limits_{\mathop {||}\limits_O } - C{H_3}\)

\(C{H_3} - \mathop {CH}\limits_{\mathop {|\;\;\;}\limits_{OH} } - \mathop {CH}\limits_{\mathop {|\;\;\;}\limits_{OH} } - C{H_3}\)

None of these

Questions 26 of 50

Question:Cinnamic acid is formed when \({C_6}{H_5} - CHO\) condenses with \({(C{H_3}CO)_2}O\) in presence of

Answers Choices:

Conc. \({H_2}S{O_4}\)

Sodium acetate

Sodium metal

Anhydrous \(ZnC{l_2}\)

Questions 27 of 50

Question:A mixture of benzaldehyde and formaldehyde on heating with aqueous \(NaOH\)solution gives

Answers Choices:

Benzyl alcohol and sodium formate

Sodium benzoate and methyl alcohol

Sodium benzoate and sodium formate

Benzyl alcohol and methyl alcohol

Questions 28 of 50

Question:During reaction of benzaldehyde with alkali one of the product is

Answers Choices:

Phenol

Benzyl alcohol

Benzene

Benzophenone

Questions 29 of 50

Question:Cannizzaro reaction is given by

Answers Choices:

HCHO

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

\(C{H_3}CHO\)

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

Questions 30 of 50

Question:The reaction \({C_6}{H_5}CHO + C{H_3}CHO \to {C_6}{H_5}CH = CH - CHO\)  is known as

Answers Choices:

Perkin's reaction

Claisen condensation

Benzoin condensation

Cannizzaro's reaction

Questions 31 of 50

Question:When two molecules of acetaldehyde condense in the presence of dilute alkali, it forms

Answers Choices:

Acetal Sodium formate

Aldol

Mesitylene

None of these

Questions 32 of 50

Question:Fehling solution react with HCHO to form precipitate of

Answers Choices:

White colour

Yellow colour

Red colour

Blue colour

Questions 33 of 50

Question:Product in following reaction is \(C{H_3}MgI + HCHO \to \) Product

Answers Choices:

\(C{H_3}CHO\)

\(C{H_3}OH\)

\({C_2}{H_5}OH\)

\(C{H_3} - O - C{H_3}\)

Questions 34 of 50

Question:$$A\mathop {\buildrel \Delta \over \longrightarrow }\limits_{{{800}^o}C} C{H_2} = C = O$$
, Reactant ‘A’ in the reaction is

Answers Choices:

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

\(C{H_3}CHO\)

\(C{H_3} - \mathop C\limits_{\mathop {||}\limits_O } - C{H_3}\)

\({C_2}{H_5}OH\)

Questions 35 of 50

Question:Only an aldehyde having..... can undergo the aldol condensation

Answers Choices:

At least one beta H atom

At least one alpha H atom

An aromatic ring

No alpha H atom

Questions 36 of 50

Question:When acetaldehyde is heated with Tollen's reagent, following is obtained

Answers Choices:

Methyl alcohol

Silver acetate

Silver mirror

Formaldehyde

Questions 37 of 50

Question:Boiling point of acetone is

Answers Choices:

\({56^o}C\)

\({60^o}C\)

\({100^o}C\)

\({90^o}C\)

Questions 38 of 50

Question:Urotropine is

Answers Choices:

Hexamethylene tetramine

Hexaethylene tetramine

Hexamethylene diamine

None of these

Questions 39 of 50

Question:Glucose + Tollen's reagent \( \to \) Silver mirror shows

Answers Choices:

Presence of acidic group

Presence of alkaline group

Presence of ketonic group

Presence of aldehyde group

Questions 40 of 50

Question:Fehling solution is

Answers Choices:

Ammoniacal cuprous chloride solution

Acidified copper sulphate solution

Copper sulphate and sodium hydroxide + Rochelle salt

None of these

Questions 41 of 50

Question:Reduction of an aldehyde produces

Answers Choices:

Primary alcohol

Monocarboxylic acid

Secondary alcohol

Tertiary alcohol

Questions 42 of 50

Question:The compound which reacts with Fehling solution is

Answers Choices:

\({C_6}{H_5}COOH\)

HCOOH

\({C_6}{H_5}CHO\)

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

Questions 43 of 50

Question:Which one of the following undergoes reaction with 50% sodium hydroxide solution to give the corresponding alcohol and acid

Answers Choices:

Butanal

Benzaldehyde

Phenol

Benzoic acid

Questions 44 of 50

Question:Which one of the following is reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon

Answers Choices:

Acetamide

Acetic acid

Ethyl acetate

Butan–2–one

Questions 45 of 50

Question:Fehling solution is

Answers Choices:

\(CuS{O_4}\)+ lime

\(CuS{O_4} + NaOH(aq)\)

\(CuS{O_4} + N{a_2}C{O_3}\)

None of these

Questions 46 of 50

Question:Wolf kishner reduction, reduces

Answers Choices:

\( - COOH\) group

\( - C \equiv C\)– group

\( - CHO\) group

\( - O - \)group

Questions 47 of 50

Question:A compound has a vapour density of 29. On warming an aqueous solution of alkali, it gives a yellow precipitate. The compound is

Answers Choices:

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

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

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

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

Questions 48 of 50

Question:Which of the following will form two isomers with semi carbazide

Answers Choices:

Benzaldehyde

Acetone

Benzoquinone

Benzophenone

Questions 49 of 50

Question:A compound \(A \to {C_5}{H_{10}}C{l_2}\) on hydrolysis gives \({C_5}{H_{10}}O\) which reacts with \(N{H_2}OH\), forms iodoform but does not give fehling test. \(A\) is

Answers Choices:

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

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

\(C{H_3}C{H_2}C{H_2}C{H_2}\mathop {\mathop {\mathop {\mathop {CH}\limits^{|\,\,\,\,\,} }\limits^{Cl\,} }\limits_{|\,\,\,\,\,\,} }\limits_{Cl\,\,} \)

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

Questions 50 of 50

Question:\(C{H_3} - CHO + HCN \to A\); Compound \(A\) on hydrolysis gives

Answers Choices:

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

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

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

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