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CBSE Questions for Class 12 Engineering Chemistry Aldehydes,Ketones And Carboxylic Acids Quiz 10 - MCQExams.com

Diacetone alcohol is also known as ___________.
  • 4-hydroxy butyraldehyde
  • 4-Hydroxy-4-methyl-2-pentanone
  • but-2-en-1-al
  • butan-2,4-dione
What is the compound A?
29498.png
  • Oxalic acid
  • Malonic acid
  • Succinic acid
  • Adipic acid
Rochelle salt is :
  • sodium tartarate
  • sodium potassium tartarate
  • ammonium tartarate
  • potassium ammonium tartarate
The enol form of acetone, after treatment with D2O gives :
Which of the following cannot form CH3COOH from C2H5OH?
A) PCC
B) PDC
C) K2Cr2O7/H+
D)KMnO4/H+
  • A and B only
  • C and D only
  • Only A
  • All A, B, C and D
One mole of an organic compound requires 0.5 moles of oxygen to produce a carboxylic acid. The compound may be :
  • alcohol
  • ether
  • ketone
  • aldehyde
List-A
List-B
Aldehyde
Oxidised product of
Aldehyde
Formaldehyde
A. Acetic Acid
Acetaldehyde
B. Propanoic acid
Propionaldehyde
C. Isobutyric acid
Isobutyraldehyde
D. Methanoic acid

Match the contents in List-A to that in List-B.
  • 1-D, 2-A, 3-B, 4-C
  • 1-A, 2-D, 3-C, 4-B
  • 1-A, 2-C, 3-D, 4-B
  • 1-D, 2-B, 3-C, 4-A
Among the given compounds, the compound which is most susceptible to a nucleophilic attack at the carbonyl group is :
  • CH3COCl
  • CH3CHO
  • CH3COOCH3
  • CH3COOCOCH3

The major product obtained in the reaction is :

29770_5ea5da6dd7944e839872425b38fa2896.png

From above reaction, the formation of product is:

30812.bmp
  • HCOOH
Statement- I: Carbonyl compounds take part in nucleophilic addition reactions.
Statement- II: These reactions are initiated by nucelophilic attack at the electron deficient carbon atom.

  • Both the statements are true and statement-II is the correct explanation of
    statement-I.
  • Both statements are true but statement-II is not the correct explanation of
    statement-I.
  • Statement-I is true but statement-II is false
  • Statement-I is false but statement-II is true.
In the above sequence of reaction, C is __________.
30792_0be3f82543c44c4fa4d4fe538682b6a0.png
An organic compound A with molecular formula C6H6 on treating with CH3Cl in presence of anhydrous AlCl3 gives BB on treating with nitration mixture gives C. Compound C on reacting with K2Cr2O7/H2SO4 gives D. Then the compound D is :

In the above sequence of reactions, final product D is :
30815_1643fdc148d645e2971f9d659d3bf7b1.png
How many moles of ammonia will react with three moles of benzaldehyde to form osazone?
  • 2 moles of ammonia
  • 1 mole of ammonia
  • 3 moles of ammonia
  • 4 moles of ammonia
The compound 2 methy2butene on reaction with NaIO4 in the presence of KMnO4 gives :

29780_cd6cfcd776cc48bcabf89f2fcb926e55.png
  • CH3COOH
  • CH3COCH3+CH3COOH
  • CH3COCH3+CH3CHO
  • CH3CHO+CO2
Which of the following, on oxidation will not give a carboxylic acid with the same number of carbon atoms?
  • CH3COCH3
  • CCl3CH2CHO
  • CH3CH2CH2OH
  • CH3CH2CHO

Identify A.

29768_4f551fa1fecf4d268ebe5b090f916ad1.PNG
  • HCHO
  • CH3CHO
  • C6H5CHO
  • CH3COCH3
The oxidation products of 1-nitronaphthalene and α-naphthylamine respectively are :
  • phtalic acid and 3-aminophthalic acid
  • 3-nitrophtalic acid and phtalic acid
  • phtalic acid and phthalic acid
  • 3-nitrophtalic acid and 3-aminophthalic acid
P -cresol reacts with chloroform in an alkaline medium to give the compound A which adds hydrogen cyanide to form, the compound B. The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is:
In the above sequence of reactons D is :
31536_0495830f45964402830e1d46d63a55e6.png
The correct product of the following sequence of reactions is:

(CH3)2CHCOOH(i)LiAH(iiH2O)PBr3KCNDMSOH2O,H+Δ?
  • (CH3)2CHCHBrCOOH
  • (CH3)2CHCH2COOH
  • (CH3)2CHCH2CH2NH2
  • (CH3)2C=CHCOOH
Which one of the following undergoes reaction with 50% sodium hydroxide solution to give the  corresponding alcohol and acid?
  • Phenol
  • Benzaldehyde
  • Butanal
  • Benzoic acid
In the above sequence of reactions, E is :
31538_27a647447dee4e79b5d6ea8c61cb2d28.png
In the given reaction,
CH3COCH3CH3CΘCNaXH2OYH2Pd/CaCO3ZAl2O3 W, W is:
  • CH2=CHCH=CH2
  • CH3CH=CHCH=CH2
  • (CH3)CH=CHC(CH3)=CH2
  • CH3CH=CHCH=CHCH3
The IUPAC name of the compound given below is:
CH3CH2COCH2CH3
  • 1-pentanone
  • 2-pentanone
  • 2-carboxybutane
  • 3-pentanone
Compound 'P' of the following reaction sequence can be :
117487_fafeaf9930294b29bd5ca129ea7c0d39.png
Which of the following compound cannot have the condensed formula C5H10O?
  • An aldehyde
  • A ketone
  • An alkenol
  • A cyclic ketone
The correct order of rate of reaction toward nucleophilic addition reaction.
991986_c0ead192757244f99361e278031b11f6.jpg
  • a > b > c > d > e
  • a > b > d > c > e
  • a > d > e > b > c
  • a > b > e > d > c
The final product of the following sequence of reaction is?
(CH3O)2CHCH2CH2CH2BrMgH2C=OH3O+heat
  • CH3OO||CCH2CH2CH2CH2OH
  • CH3O||CCH2CH2CH2CH2OH
  • HO||CCH2CH2CH2CH2OH
  • HO||CCH2CH2CH2O||CH
Product (A) is?
992201_d707b75eb1564499bbec8f7a946c5d44.png
Which one of the following compounds is the best choice for being prepared by an efficient mixed aldol addition reaction?
Given the best condition for this transformation:
993116_37863131278e4d8c8f6f542ecb43437f.png
  • CH3OH,H+(cat.), heat
  • H2O,H+(cat.), heat
  • Mg,ether,CH3OH
  • SOCl2,CH3OH
The IUPAC name of the compound is:

996503_065907f945c34251b820da670ab227f7.jpg
  • 2-hydroxypropanoic acid
  • 1-hydroxypropanoic acid
  • 1-hydroxyehtane carboxylic acid
  • 1-hydroxyethanoic acid
The IUPAC name of the compound is:
996334_1251a63fb6334936b46986303f576800.jpg
  • but-1-en-4-oic acid
  • 1-hydroxybut-2-en-1-one
  • but-2-en-1-oic acid
  • but-2-en-4-oic acid
Which of the following reagent is used for the separation of acetaldehyde from acetophenone?
  • NH2OH
  • NaOl
  • Tollen's reagent
  • C6H5NHNH2
What combination of acid chloride or anhydride and arene would you choose to prepare given compound?
993482_1ba9a5672a244c1dbacc68146486a678.jpg
Which of the following sets of reagents, used in the order shown , would successfully accomplish the conversion shown ?
993278_9c5066d7fb7b4a42a9d7b5797a5aa6d3.png
  • CH3CH2CH2MgBr; H3O+; PCC, CH2CI2
  • CH3CH2CH2MgBr; H3O+; H2SO4, heat PCC,CH2CI2
  • (C6H5)3+PCHCH2CH3, B2H6; CH3CO2H
  • (C6H5)3+PCHCH2CH3; H2O
n-Butylbenzene on oxidation with hot alkanine KMnO4 gives:
  • Benzoic acid
  • Butanoic acid
  • Benzyl alcohol
  • Benzaldehyde
Reaction - (1) : CH3CH=CHCH3KMnO4Cold(A)NaIO4(B) 2 mole


Reaction - (2) : CH3CH=CHCH3KMnO4/NaIO4(A)NaIO4(B) 2 mole

Products (B) and (C), respectively, are :
  • CH3CHO,CH3CO2H
  • CH3CO2H,CH3CHO
  • CH3CHO in both reaction
  • CH3CO2H in both reaction
Identify the position where electrophilic aromatic substitution(EAS) is most favourable.
993426_6625f7997f8a418384fc73579642be14.jpg
  • A
  • B
  • C
  • A and C
Arrange the following compounds in correct order of acidic strength.
  • HCOOH>CH3COOH>C6H5OH>C2H5OH
  • CH3COOH>HCOOH>C6H5OH>C2H5OH
  • C6H5OH>HCOOH>CH3COOH>C2H5OH
  • None of these
The IUPAC name of NCCH2CH2COOH is:
  • 3- carboxy propanenitrile
  • 4- cyanobutanoic acid
  • 2- cyanomethane Carboxylic acid
  • 3- cyanopropanoic acid
What is the name of this following compound?
CH3CH2COCl 
  • Butanoyl chloride
  • Propanoyl chloride
  • 1 chloro propanone
  • None of these
An organic compound, C3H8O does not give a precipitate with 2,4-dinitrophenyl hydrazine reagent and does not react with metallic sodium. It could be:
  • CH3CH2CHO
  • CH2=CHCH2OH
  • CH3OCH3
  • CH2=CHOCH3
The most possible product is:
1068383_544134b87b74471585be399e24bcf195.png
The product of the reaction X will be:
1067397_13e1e35046234d8ea7863cfd553b6d70.png
  • C6H5CH=CHCOOH
The correct name of the given compound :
CH3H|C|OHCOOH
  • glycoxal
  • lactic acid
  • glycine
  • glyceraldehyde
(i) H3CO||CCH3
(ii) H3CO||CCH2O||CCH3
(iii) PhOH
(iv) H3CO||COH

Among the compounds the correct order of pKa values are:
  • IV<III<II<I
  • IV<I<II<III
  • IV<II<III<I
  • IV<III<I<II
Carbonyl group is converted into methylene group by?
  • Acidic reduction
  • Raney Ni
  • Basic hydrolysis
  • Normal Hydrogenation
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