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CBSE Class 10 Science Chapter 4 Carbon and its Compounds MCQs
By Ankit Gupta
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Updated on 29 Aug 2025, 16:56 IST
Carbon is one of the most important elements in our daily lives. From the food we eat to the fuels we use, carbon plays a vital role in almost everything around us. In Class 10 Science Chapter 4, students learn about Carbon and its Compounds in detail. To test this understanding, practicing MCQs on Carbon and its Compounds is a great way to revise and strengthen concepts. That is why carbon and its compounds class 10 MCQ practice is very useful for exams like school tests, board exams, and even competitive exams.
This chapter mainly explains the unique properties of carbon such as catenation, tetravalency, and the formation of covalent bonds. It also covers topics like hydrocarbons, homologous series, functional groups, and important compounds like ethanol and ethanoic acid. Since these concepts are very important, students are often asked to solve MCQ on Carbon and its Compounds to check their conceptual clarity. Practicing carbon and its compounds MCQs not only helps in memorizing facts but also in applying knowledge to problem-solving.
When students go through class 10 carbon and its compounds MCQ practice, they become more confident in answering different types of objective questions. These may include multiple-choice questions on chemical properties, physical properties, reactions of carbon compounds, and uses of different compounds in everyday life. That is why going through carbon and its compound MCQ sets is highly recommended before exams.
The carbon and its compounds class 10 MCQs are carefully designed to match the CBSE exam pattern. These questions include simple recall-based questions as well as higher-order thinking ones. Solving a wide range of MCQ carbon and its compounds improves speed and accuracy, which is very important during the actual examination. By practicing MCQ of carbon and its compounds, students can also identify their weak areas and revise them in time.
Do Check: CBSE Class 10 Science Chapter 1 MCQs
Carbon and its Compounds Class 10 MCQ
Ques 1. Which of the following is an example of a tertiary alcohol?
a) 2-methyl-2-propanol
b) 1-propanol
c) 2-methyl-1-propanol
d) 2-propanol
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Answer: a) 2-methyl-2-propanol
Ques 2. Which of the following compounds is an example of a saturated hydrocarbon?
a) Ethyne
b) Ethanol
c) Ethene
d) Ethane
Answer: d) Ethane
Ques 3. The functional group present in an alcohol molecule is:
a) Alkyl
b) Hydroxyl
c) Carboxyl
d) Carbonyl
Answer: b) Hydroxyl
Ques 4. The process of converting a liquid into its gaseous state is called:
a) Sublimation
b) Condensation
c) Evaporation
d) Melting
Answer: c) Evaporation
Do Check: CBSE Class 10 Science Chapter 2 MCQs
Ques 5. The molecular formula of benzene is:
a) C2H6
b) C2H4
c) C6H12
d) C6H6
Answer: d) C6H6
Ques 6. The simplest aldehyde is:
a) Butanal
b) Propanal
c) Ethanal
d) Methanal
Answer: d) Methanal
Ques 7. The process of respiration involves the conversion of glucose into:
a) Carbon dioxide and ethanol
b) Ethanol and water
c) Carbon monoxide and water
d) Carbon dioxide and water
Answer: d) Carbon dioxide and water
Ques 8. The process of fermentation involves the conversion of glucose into:
a) Carbon monoxide and water
b) Carbon dioxide and water
c) Carbon dioxide and ethanol
d) Ethanol and water
Answer: c) Carbon dioxide and ethanol
Ques 9. Which of the following is an unsaturated hydrocarbon?
a) Ethane
b) Ethyne
c) Ethene
d) Methane
Answer: c) Ethene
Ques 10. The process of the addition of hydrogen to an unsaturated compound is called:
a) Oxidation
b) Substitution
c) Addition
d) Reduction
Answer: c) Addition
Ques 11. The general formula of an alkene is:
a) CnH2n−2
b) CnH2n+2
c) CnHn
d) CnH2n
Answer: d) CnH2n
Do Check: CBSE Class 10 Science Chapter 5 MCQs
Ques 12. The chemical formula of ethanoic acid is:
a) CH3COOH
b) C2H6O2
c) C2H4O2
d) C2H5OH
Answer: a) CH3COOH
Ques 13. The process of the removal of water from a substance is called:
a) Hydrolysis
b) Dehydration
c) Sublimation
d) Condensation
Answer: b) Dehydration
Ques 14. The functional group present in a carboxylic acid molecule is:
a) Hydroxyl
b) Carboxyl
c) Alkyl
d) Carbonyl
Answer: b) Carboxyl
Ques 15. Which of the following is an example of an ester?
a) Ethene
b) Ethane
c) Ethyl acetate
d) Ethanol
Answer: c) Ethyl acetate
Ques 16. Carbon is unique among the elements because it can:
a) Form compounds with metals only
b) Exhibit only one valency
c) Only bond with hydrogen
d) Form long chains and branched structures
Answer: d) Form long chains and branched structures
Ques 17. The allotrope of carbon used as a lubricant and in pencils is:
a) Amorphous carbon
b) Diamond
c) Graphite
d) Fullerenes
Answer: c) Graphite
Ques 18. Which of the following is an example of a saturated hydrocarbon?
a) Ethyne
b) Benzene
c) Ethane
d) Ethene
Answer: c) Ethane
Ques 19. The general formula for alkanes is:
a) CnH2n
b) CnH2n-2
c) CnHn
d) CnH2n+2
Answer: d) CnH2n+2
Do Check: CBSE Class 10 Science Chapter 9 MCQs
Ques 20. The process of conversion of vegetable oils to vegetable ghee involves:
a) Oxidation
b) Hydrogenation
c) Polymerization
d) Esterification
Answer: b) Hydrogenation
Ques 21. Which compound is responsible for the unique smell of garlic?
a) Ethyne
b) Methane
c) Allicin
d) Ethene
Answer: c) Allicin
Ques 22. The functional group present in alcohols is:
a) -COOH (Carboxyl)
b) -NH2 (Amine)
c) -CHO (Aldehyde)
d) -OH (Hydroxyl)
Answer: d) -OH (Hydroxyl)
Ques 23. The process of fermentation involves the conversion of sugars to alcohol by:
a) Reduction
b) Esterification
c) Hydrolysis
d) Oxidation
Answer: d) Oxidation
Ques 24. A compound with the molecular formula C6H6 is known as:
a) Ethyne
b) Benzene
c) Methane
d) Ethene
Answer: b) Benzene
Ques 25. The hydrocarbon used as a domestic fuel is:
a) Benzene
b) Ethyne
c) Ethanol
d) Methane
Answer: d) Methane
Ques 26. Which of the following statements are correct for carbon compounds?
(i) Most carbon compounds are good conductors of electricity.
(ii) Most carbon compounds are poor conductors of electricity.
(iii) Force of attraction between molecules of carbon compounds is not very strong.
(iv) Force of attraction between molecules of carbon compounds is very strong.
a) (ii) and (iv)
b) (i) and (iii)
c) (ii) and (iii)
d) (i) and (iv)
Answer: c) (ii) and (iii)
Ques 27. C3H8 belongs to the homologous series of:
a) Cyclo alkanes
b) Alkenes
c) Alkynes
d) Alkanes
Answer: d) Alkanes
Do Check: CBSE Class 10 Science MCQs
Ques 28. The number of isomers of pentane is:
a) 2
b) 3
c) 4
d) 5
Answer: b) 3
Ques 29. Which of the following will undergo addition reactions?
a) CH4
b) C3H8
c) C2H6
d) C2H4
Answer: d) C2H4
Ques 30. Ethanol on complete oxidation gives:
a) Ethanal
b) Acetone/ethanone
c) Acetic acid/ethanoic acid
d) CO2 and water
Answer: c) Acetic acid/ethanoic acid
Ques 31. Which of the following will give a pleasant smell of ester when heated with ethanol and a small quantity of sulphuric acid?
a) CH3CH2OH
b) CH3CHO
c) CH3OH
d) CH3COOH
Answer: d) CH3COOH
Ques 32. Name the functional group present in CH3COCH3:
a) Aldehyde
b) Ketone
c) Carboxylic acid
d) Alcohol
Answer: b) Ketone
FAQs on Class 10 Science Chapter 4
Why is carbon considered a unique element?
Carbon is unique because of its ability to form long chains (catenation) and its tetravalency (ability to form four bonds). These properties allow carbon to create millions of compounds, including important ones like hydrocarbons, alcohols, and acids.
What are hydrocarbons in Class 10 Science Chapter 4?
Hydrocarbons are compounds made up of only carbon and hydrogen atoms. They can be saturated (alkanes) or unsaturated (alkenes and alkynes). They form the basis of fuels like petrol, diesel, and natural gas.
What is the importance of functional groups in carbon compounds?
Functional groups like –OH (alcohol), –COOH (carboxylic acid), and –CHO (aldehyde) give specific properties to carbon compounds. They help in identifying and classifying compounds into families like alcohols, acids, and ketones.
What is the difference between ethanol and ethanoic acid?
- Ethanol (C₂H₅OH) is an alcohol, commonly used in alcoholic drinks, as a fuel, and as an industrial solvent.
- Ethanoic acid (CH₃COOH) is a carboxylic acid, commonly called acetic acid, which is used in vinegar and food preservation.