JEE Questions for Chemistry Aldehydes Ketones And Carboxylic Acids Quiz 8 - MCQExams.com

Upon treatment with Al(OEt)3 followed by usual reactions (work up) CH3CHO will produce
  • Only CH3 COOCH2 CH3
  • a mixture of CH3 COOH and EtOH
  • Only CH3 COOH
  • Only EtOH
The major product of the following reaction is
Chemistry-Aldehydes Ketones and Carboxylic Acids-507.png
  • a hemiacetal
  • an acetal
  • an ether
  • an ester
Trichloroacetaldehyde was subjected to Cannizzaro's reaction by using NaOH. The mixture of the products contains sodium trichloroacetate ion and another compound. The other compound is
  • 2, 2, 2-trichlorethanol
  • trichloromethanol
  • 2, 2, 2-trichloropropanol
  • chloroform
Which of the following reactions convert acetone into hydrocarbon having same number of carbon atoms?
  • Wolff-Kishner reaction
  • Hofmann reaction
  • Grignard reaction
  • Reduction with LiAlH4
In the scheme given below, the total number of intramolecular aldol condensation products formed from `Y ' is
Chemistry-Aldehydes Ketones and Carboxylic Acids-509.png
  • 1
  • 2
  • 3
  • 4
The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits
  • geometrical isomerism
  • optical isomerism
  • neither optical nor geometrical isomerism
  • both optical and geometrical isomerism
Identify the reaction which is used to obtain β- hydroxy ketone.
  • Condensation reaction
  • Aldol condensation
  • Cross aldol condensation
  • Cannizzaro reaction
The most reactive compound towards formation of cyanohydrin on treatment with HCN followed by acidification is
  • benzaldehyde
  • p-nitrobenzaldehyde
  • phenylacetaldehyde
  • p-hydroxybenzaldehyde

Chemistry-Aldehydes Ketones and Carboxylic Acids-510.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-511.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-512.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-513.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-514.png

Chemistry-Aldehydes Ketones and Carboxylic Acids-515.png
  • butanol
  • aldol
  • ketol
  • acetal
A compound `A' having the molecular formula C5 H12O, on oxidation gives a compound 'B' with molecular formula C5 H10O. Compound 'B ' gave a 2, 4-dinitrophenylhy-drazine derivative but did not answer haloform test or silver minor test. The structure of compound `A' is
  • CH3 —CH2—CH2 —CH2 —CH2 —OH
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-516.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-517.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-518.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-519.png
Which of the following compounds would be the main product of an aldol condensation of acetaldehyde and acetone?
  • CH3CH = CH∙CHO
  • CH3CH = CHCOCH3
  • (CH3)2C = CH∙CHO
  • (CH3)2C = CHCOCH3
An organic compound of molecular formula C3H6O did not give a silver mirror with Tollen's reagent, but gave an oxime with hydroxylamine, it may be
  • CH3— CO—CH3
  • C2 H5CHO
  • CH2 = CH—CH2—OH
  • CH3— O—CH = CH2
In a reaction RCHO is reduced to RCH3 using amalgamated zinc and concentrated HCl and warming the solution. The reaction is known as
  • Meerwein-Ponndorf reaction
  • Clemmensen's reduction
  • Wolff-Kishner reduction
  • Schiff s reaction
Which of the following reactions can be used to change benzaldehyde to cinnamic acid?
  • Perkin's reaction
  • Knoevenagel reaction
  • Reformatsky reaction and ketones
  • Benzoin condensation

Chemistry-Aldehydes Ketones and Carboxylic Acids-521.png
  • Only I
  • Only II
  • I and III
  • II and III
Which product is obtained on reduction of methanal in the presence of concentrated NaOH?
  • Formic acid and methyl alcohol
  • CO + H2
  • Methyl alcohol
  • Formic acid
An aromatic compound `X ' with molecular formula C9 H10 O gives the following chemical tests
I. Forms 2, 4-DNP derivative,
II. Reduces Tollen's reagent,
III. Undergoes Cannizzaro reaction and,
IV. On vigorous oxidation 1, 2- benzenedicarboxylic acid is obtained. X is

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-522.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-523.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-524.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-525.png
In the following reaction sequence, the correct structures of E ,F and G are
Chemistry-Aldehydes Ketones and Carboxylic Acids-526.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-527.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-528.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-529.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-530.png
Acetone on addition to methyl magnesium bromide forms a complex, which on decomposition with acid gives X and Mg(OH)Br. Which one of the following is X ?
  • CH3OH
  • (CH3)3 COH
  • (CH3 )2 CHOH
  • CH3CH2 OH
The end product 'C ' in the following sequence of chemical reactions is
Chemistry-Aldehydes Ketones and Carboxylic Acids-532.png
  • acetaldehyde oxime
  • formaldehyde oxime
  • methyl nitrate
  • acetoxime
Which reaction, intermediate is formed during the condensation reaction between acetaldehyde and formaldehyde ?

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-533.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-534.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-535.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-536.png
The reactant ( X ) in the reaction,
Chemistry-Aldehydes Ketones and Carboxylic Acids-538.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-539.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-540.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-541.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-542.png
Which of the following, is an example of aldol condensation?

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-543.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-544.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-545.png
  • None of the above
p-cresol reacts with chloroform in 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

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-546.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-547.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-548.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-549.png
Predict the product,
Chemistry-Aldehydes Ketones and Carboxylic Acids-550.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-551.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-552.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-553.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-554.png

Chemistry-Aldehydes Ketones and Carboxylic Acids-555.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-556.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-557.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-558.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-559.png

Chemistry-Aldehydes Ketones and Carboxylic Acids-561.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-562.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-563.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-564.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-565.png

Chemistry-Aldehydes Ketones and Carboxylic Acids-566.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-567.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-568.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-569.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-570.png
Claisen condensation is not given by

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-571.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-572.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-573.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-574.png
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