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Organic Chemistry MCQs

Study key concepts of Organic Chemistry with our structured Organic Chemistry MCQs, tailored for students, teachers, and job seekers preparing for science and chemistry-related exams. These multiple-choice questions cover hydrocarbons, functional groups, alcohols, alkyl halides, carboxylic acids, amines, esters, aromatic compounds, reaction mechanisms, IUPAC nomenclature, stereochemistry, and organic synthesis pathways. Frequently asked in exams conducted by PPSC, FPSC, CSS, NTS, SPSC, BPSC, KPSC, ETEA, AJKPSC, and in tests for Lecturer Chemistry, Medical Colleges, and Pharmaceutical roles.

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1 Organic Chemistry MCQs

Fehling solution react with HCHO to form precipitate of ?

  • White colour
  • Yellow colour
  • Red colour
  • Blue colour
0 Comments
Correct Answer: C. Red colour

Explanation:

Fehling’s solution is a chemical reagent used to test for the presence of ... Read More Details

2 Organic Chemistry MCQs

In Aldehydes and Ketones, carbon of carbonyl group is ?

  • sp³ hybridised
  • sp² hybridised
  • sp hybridised
  • Unhybridised
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Correct Answer: B. sp² hybridised

Explanation:

The carbonyl group (C=O) is the defining feature of aldehydes and ketones. In ... Read More Details

3 Organic Chemistry MCQs

Amino acids are a product of the digestion of?

  • Carbohydrates
  • Fats
  • Proteins
  • Vitamins
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Correct Answer: C. Proteins

Explanation:

Proteins are complex biological macromolecules made of long chains of amino acids. During ... Read More Details

4 Organic Chemistry MCQs

Acetaldehyde cannot show:

  • Iodoform test
  • Lucas test
  • Benedict’s test
  • Tollen’s test
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Correct Answer: B. Lucas test

Explanation:

Acetaldehyde (CH₃CHO) is a simple aliphatic aldehyde. Its chemical behavior can be identified ... Read More Details

5 Organic Chemistry MCQs

The Clemmensen reduction of acetone yields:

  • Ethanol
  • Ethanal
  • Propane
  • Propanol
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Correct Answer: C. Propane

Explanation:

Clemmensen reduction is a chemical reaction used to reduce carbonyl groups of aldehydes ... Read More Details

6 Organic Chemistry MCQs

O₃ reacts with CH₂=CH₂ to form ozonide. On hydrolysis it forms:

  • Ethylene oxide
  • HCHO
  • Ethylene glycol
  • Ethyl alcohol
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Correct Answer: B. HCHO

Explanation:

Ozonolysis is a reaction in which ozone (O₃) reacts with alkenes to break ... Read More Details

7 Organic Chemistry MCQs

Dimethyl ketones are usually characterized through _____________?

  • Tollen’s reagent
  • Iodoform test
  • Schiff’s test
  • Benedict’s reagent
0 Comments
Correct Answer: B. Iodoform test

Explanation:

Dimethyl ketone, also known as acetone, is the simplest ketone with the formula ... Read More Details

8 Organic Chemistry MCQs

Silver mirror is a test for ____________?

  • Aldehydes
  • Thio alcohols
  • Amines
  • Ethers
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Correct Answer: A. Aldehydes

Explanation:

The silver mirror test is a classical chemical reaction used to detect the ... Read More Details

9 Organic Chemistry MCQs

Which of the following is the typical reaction of aldehyde?

  • Electrophilic addition
  • Nucleophilic substitution
  • Nucleophilic addition
  • Nucleophilic elimination
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Correct Answer: C. Nucleophilic addition

Explanation:

Aldehydes are organic compounds characterized by the presence of a carbonyl group (C=O) ... Read More Details

10 Organic Chemistry MCQs

Fehling solution reacts with HCHO to form precipitate of _____________?

  • White colour
  • Yellow colour
  • Red colour
  • Blue colour
0 Comments
Correct Answer: C. Red colour

Explanation:

Fehling's solution is a chemical reagent used to detect the presence of reducing ... Read More Details