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Organic Chemistry Questions and Answers – Preparation of Ketones | Organic Chemistry Multiple Choice Questions and Answers

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Free download in PDF Organic Chemistry Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>

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(1) What is the end product in the following sequence of reaction?

[A] Acetic acid
[B] Isopropyl alcohol
[C] Acetone
[D] Ethanol
Answer: Acetone
(2) Acetophenone is prepared from which reaction?
[A] Rosenmund reaction
[B] Sandmayer reaction
[C] Wurtz reaction
[D] Friedel craft reaction
Answer: Friedel craft reaction

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(3) Compound which gives acetone on ozonolysis is?
[A] CH3−CH=CH−CH3
[B] (CH3)2C=C(CH3)2
[C] C6H5CH=CH2
[D] CH3CH=CH2
Answer: (CH3)2C=C(CH3)2
(4) Which one of the following compounds is prepared in the laboratory from benzene by a substitution reaction?
[A] Glyoxal
[B] Cyclohexane
[C] Acetophenone
[D] Hexabromo cyclohexane
Answer: Acetophenone
(5) Ketones can be prepared in one step from which of the following process?
[A] Hydrolysis of esters
[B] Oxidation of primary alcohol
[C] Oxidation of secondary alcohol
[D] Reaction of acid halide with alcohols
Answer: Oxidation of secondary alcohol
(6) Ketones are prepared by which of the following name reaction?
[A] Clemmensen’s reduction
[B] Cannizzaro reaction
[C] Rosenmund’s reduction
[D] Oppenaur’s oxidation
Answer: Oppenaur’s oxidation
(7) Isopropyl alcohol on oxidation gives which of the following?
[A] Acetone
[B] Acetaldehyde
[C] Ether
[D] Ethylene
Answer: Acetone
(8) Dry heating of calcium acetate gives which of the following?
[A] Acetaldehyde
[B] Ethane
[C] Acetic acid
[D] Acetone
Answer: Acetone
(9) Which of the following compound gives a ketone with Grignard reagent?
[A] Formaldehyde
[B] Ethyl alcohol
[C] Methyl cyanide
[D] Methyl iodide
Answer: Methyl cyanide
(10) Propyne on hydrolysis in presence of HCl and HgSO4 gives which of the following?
[A] Acetaldehyde
[B] Acetone
[C] Formaldehyde
[D] Acetophenone
Answer: Acetone

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