Organic Chemistry Quiz - CBSE Class 10 Science

Free practice quiz: Organic Chemistry (CBSE Class 10 Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 10 Science practice quiz has 20 multiple-choice questions on Organic Chemistry, and 20 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which of the following compounds is saturated?

   1. Ethane
   2. Ethene
   3. Ethyne
   4. Benzene
   Show answer

   Answer: A. Ethane

   Saturated compounds contain single bonds only. Ethane has C-C single bonds, making it saturated.

2. What type of isomerism is exhibited by butene?

   1. Structural and Geometrical
   2. Optical
   3. Conformational
   4. Functional
   Show answer

   Answer: A. Structural and Geometrical

   Butene can show both structural isomerism (position of the double bond) and geometrical isomerism (cis-trans configuration).

3. Which is the simplest ketone?

   1. Methanal
   2. Propanone
   3. Ethanone
   4. Butanone
   Show answer

   Answer: B. Propanone

   Propanone, also known as acetone, is the simplest member of the ketone family.

4. Which of the following represents an ester linkage?

   1. -COO-
   2. -NH2-
   3. -OH-
   4. -CHO-
   Show answer

   Answer: A. -COO-

   An ester linkage is characterized by the -COO- group, which forms during the condensation reaction of acids and alcohols.

5. Which reaction mechanism involves a rapid addition across a carbon-carbon double bond?

   1. Substitution
   2. Elimination
   3. Addition
   4. Rearrangement
   Show answer

   Answer: C. Addition

   Addition reactions involve breaking the double bond of alkenes and forming two new single bonds.

More questions in this quiz

Answers and explanations are in the full quiz.

1. What is the general formula for alkanes?
2. How many carbon atoms are present in a molecule of butane?
3. Which hydrocarbon is a part of the homologous series of alkenes?
4. A compound having the functional group -OH is classified as what?
5. What does the IUPAC name ethanoic acid correspond to?
6. Which functional group is present in carboxylic acids?
7. Which compound is used in the preparation of soaps via saponification?
8. Which of the following compounds is an aromatic hydrocarbon?
9. Identify the type of reaction: CH3CH2OH + Na → CH3CH2ONa + H2
10. What is the characteristic group of aldehydes?
11. Toluene is an example of which type of compound?
12. Which gas is commonly released during the combustion of hydrocarbons?
13. Identify the structure with the molecular formula C6H6.
14. Compared to alkanes, why do alkenes have a higher degree of unsaturation?
15. Which type of isomerism involves compounds with the same molecular formula but different connectivity?

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