JEE Questions for Chemistry Aldehydes Ketones And Carboxylic Acids Quiz 9 - MCQExams.com

A compound X undergoes reduction with LiAlH4 to yield Y. When vapours of Y are passed over freshly reduced copper at 300° C , X is formed. What is Y ?
  • CH3 COCH3
  • CH3CHO
  • CH3CH2OH
  • CH3OCH3
The product formed in the aldol condensation of acetaldehyde is
  • CH3CH2CH(OH)CHO
  • CH3CH(OH)CH2CHO
  • CH3CH(OH)COCH3
  • CH3CH2CH2CHO
Formalin is the commercial name of
  • formic acid
  • fluroform
  • 40% aqueous solution of methanal
  • para - formaldehyde
What product is formed in the reaction
Chemistry-Aldehydes Ketones and Carboxylic Acids-575.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-576.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-577.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-578.png
  • None of these
The product formed in the reaction
Chemistry-Aldehydes Ketones and Carboxylic Acids-579.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-580.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-581.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-582.png
  • None of these

Chemistry-Aldehydes Ketones and Carboxylic Acids-583.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-584.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-585.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-586.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-587.png
CH3COCH3 and CH3CH2CHO can be distinguished by
  • FeCl3
  • Tollen's reagent
  • NaHSO3
  • 2, 4-DNP
The increasing order of the rate of HCN addition to compounds A - D is
(A) HCHO
(B) CH3COCH3
(C) PhCOCH3
(D) PhCOPh
  • A < B < C < D
  • D < B < C < A
  • D < C < B < A
  • C < D < B < A
The enol form of acetone after treatment with D2O, give

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-588.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-589.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-590.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-591.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-592.png
2-pentanone and 3-petanone can be distinguished by
  • Cannizzaro's reaction
  • Aldol condensation
  • Iodoform reaction
  • Clemmensen's reduction
When acetaldehyde is heated with Fehling's solution, a red precipitate is formed. Which of the following is that?
  • Cu2O
  • Cu
  • CuO
  • CuSO4
The end products in the Cannizzaro reaction of benzaldehyde are
  • PhCO2H, PhCH2OH
  • PhCO2H, PhCH2CO2H
  • PhCH2OH, PhCOCH3
  • PhCO2H, PhCOCH3

Chemistry-Aldehydes Ketones and Carboxylic Acids-594.png
  • CH3 — COOH
  • BrCH2 — COOH
  • (CH3CO)2O
  • CHO—COOH
Cyanohydrin of which of the following forms lactic acid?
  • HCHO
  • CH3COCH3
  • CH3CHO
  • CH3CH2CHO
Which of the following can be used to differentiate between aldehyde and ketone ?
  • Ammoniacal AgNO3
  • Ammoniacal AgNO3 in the presence of tartarate ion
  • I2 in the presence of base
  • Ammoniacal AgNO3 in the presence of citrate ion
A compound A has a molecular formula C2Cl3OH . It reduces Fehling's solution and on oxidation, gives a monocarboxylic acid B . A can be obtained by the action of chlorine on ethyl alcohol. A is
  • Chloroform
  • chloral
  • methyl chloride
  • monochloroacetic acid
A compound, containing only carbon, hydrogen and oxygen, has a molecular weight of 44. On complete oxidation, it is converted into a compound of molecular weight 60. The original compound is
  • an aldehyde
  • an acid
  • an alcohol
  • an ether
CH3 CHO + HCN → A
Compound A on hydrolysis gives
  • CH3 — CH2 — COOH
  • CH3 — CH2 — CH2 — NH2
  • CH3 — CO — COOH
  • CH3 ∙ CO — CH = NOH

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-596.png
Which of the following does not undergo Cannizzaro's reaction?
  • Benzaldehyde
  • 2-methylpropanal
  • p-metboxybenzaldehyde
  • 2, 2-dimethylpropanal
  • Formaldehyde
In the reaction sequence,
Chemistry-Aldehydes Ketones and Carboxylic Acids-597.png
  • 1-propanol
  • propanol-3
  • ethanal
  • 2-propanol
3-hydroxybutanal is formed when (X) reacts with (Y) in dilute (Z)solution. What are X, Y and Z ?

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-598.png
  • 2)
    Chemistry-Aldehydes Ketones and Carboxylic Acids-599.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-600.png

  • Chemistry-Aldehydes Ketones and Carboxylic Acids-601.png
The reaction of an organic compound with ammonia followed by nitration of the product gives a powerful explosive, called RDX. The organic compound is
  • phenol
  • toluene
  • glycerine
  • formaldehyde
An important reaction of acetone is auto condensation in the presence of concentrated sulphuric acid to give the aromatic compund
  • mesitylene
  • mesityl oxide
  • trioxan
  • phorone
Which of the following compounds is oxidised to prepare ethyl methyl ketone?
  • 2-Propanol
  • 1-Butanol
  • 2-Butanol
  • t-Butyl alcohol
Pinacolone is
  • 2,3-Dimethyl-2,3-butanediol
  • 3,3-Dimethyl-2-butanone
  • I-Phenyl-2-propanone
  • 1,1-Diphenyl-1,2-ethandiol
Formaldehyde reacts with ammonia to give
  • Hexamethylene tetramine
  • Formaldehyde - ammonia
  • Fromalin
  • Hydrobenzamide
Benzoic acid gives benzene on being heated with X and phenol gives benzene on being heated with Y. Therefore X and Y are respectively
  • Soda-Lime and copper
  • Zn dust and NaOH
  • Zn dust and soda-lime
  • Soda-lime and zinc dust
Among acetic acid, phenol and n - hexanol, which of the following compounds will react with NaHCO3 solution to give sodium salt and carbon dioxide ?
  • Acetic acid
  • n-Hexanol
  • Acetic acid and phenol
  • Phenol
The acid amide is converted into acid with evolution of nitrogen gas by
  • HCl
  • NaOH
  • HNO2
  • P2O5
Which of the following is correct order of acidity
  • HCOOH > CH3 COOH > ClCH2COOH > C2H5COOH
  • ClCH2 > HCOOH > CH3COOH > C2H5COOH
  • CH3COOH > HCOOH > ClCH2COOH > C2H5COOH
  • C2H5COOH > CH3COOH > HCOOH > ClCH2COOH
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