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Carbon and Its Compounds Class 10 Foundation MCQ & Practice Questions
Practice Carbon and Its Compounds MCQs for Class 10 Foundation Chemistry with answers, explanations, chapter revision and related ChemNexa mock tests.
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Carbon and Its Compounds is part of Class 10 Foundation Chemistry preparation. A strong revision plan should combine concept review with exam-style questions so that definitions, relationships, calculations and exceptions are recalled accurately.
Use the sample MCQs on this page to check understanding, then attempt the related ChemNexa tests for broader practice. When an answer is wrong, review the explanation and return to the underlying concept before attempting another set.
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Concept Revision
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Exam-style MCQs
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Top 20 Carbon and Its Compounds MCQs with Answers
These public questions are selected from the exact Carbon and Its Compounds chapter, screened for topic relevance and deduplicated so repeated versions of the same MCQ are not shown publicly. Use them for quick revision, then sign in to attempt the complete test experience with more questions, results and performance review.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
1. Why does carbon mainly form covalent compounds rather than C⁴⁺ or C⁴⁻ ions?
Answer: B
Explanation: Removing or adding four electrons requires very high energy, so carbon shares electrons.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
2. Catenation is exceptionally strong in carbon because:
Answer: C
Explanation: The small size of carbon gives strong C–C covalent bonds, allowing long chains.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
3. Which molecular formula belongs to an alkane?
Answer: C
Explanation: Alkanes follow CₙH₂ₙ₊₂. For n=4, the formula is C₄H₁₀.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
4. Which molecular formula belongs to an alkene?
Answer: B
Explanation: Alkenes follow CₙH₂ₙ. For n=5, the formula is C₅H₁₀.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
5. Which molecular formula belongs to an alkyne?
Answer: C
Explanation: Alkynes follow CₙH₂ₙ₋₂. For n=3, the formula is C₃H₄.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
6. Which compound contains a carbon-carbon double bond?
Answer: B
Explanation: Ethene contains the C=C bond.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
7. Which compound contains one sigma and two pi bonds between the carbon atoms?
Answer: C
Explanation: A triple bond contains one sigma and two pi bonds.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
8. How many sigma bonds are present in ethane, C₂H₆?
Answer: B
Explanation: Ethane contains six C–H sigma bonds and one C–C sigma bond, total 7.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
9. How many sigma and pi bonds are present in ethene, C₂H₄?
Answer: A
Explanation: Ethene has four C–H sigma bonds, one C–C sigma bond, and one pi bond.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
10. Which reagent distinguishes ethene from ethane?
Answer: B
Explanation: Ethene decolourises bromine water by addition, while ethane does not.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
11. The addition of hydrogen to ethene in the presence of nickel forms:
Answer: B
Explanation: Hydrogen adds across the double bond to form ethane.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
12. Which reaction converts vegetable oil into vanaspati ghee?
Answer: B
Explanation: Hydrogenation reduces unsaturation in vegetable oils.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
13. Which functional group is present in ethanol?
Answer: C
Explanation: Ethanol contains a hydroxyl group.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
14. Which functional group is present in ethanoic acid?
Answer: C
Explanation: Ethanoic acid contains the carboxyl group.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
15. Which compound is oxidised to ethanoic acid by alkaline KMnO₄?
Answer: C
Explanation: Ethanol is oxidised to ethanoic acid.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
16. Esterification occurs between:
Answer: A
Explanation: An alcohol reacts with a carboxylic acid to form an ester and water.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
17. Ethyl ethanoate is formed from:
Answer: B
Explanation: Ethanol + ethanoic acid → ethyl ethanoate + water.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
18. Saponification is the alkaline hydrolysis of:
Answer: B
Explanation: Esters react with alkali to form soap-like salts and alcohols.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
19. Soap molecules clean grease because they form:
Answer: B
Explanation: Micelles trap oily dirt inside their hydrophobic cores.
Class 10 Foundation Chemistry · Carbon and Its Compounds · Very Very Hard
20. In a soap micelle, the hydrophobic tails point:
Answer: B
Explanation: Hydrophobic tails embed in grease, while ionic heads face water.
Carbon and Its Compounds Practice Tests
Chapter 4: Carbon and Its Compounds — Sets 01
Chapter-wise Practice · Very Very Hard
Chapter 4: Carbon and Its Compounds — Sets 02
Chapter-wise Practice · Very Very Hard
Chapter 4: Carbon and Its Compounds — Sets 03
Chapter-wise Practice · Very Very Hard
Chapter 4: Carbon and Its Compounds — Sets 04
Chapter-wise Practice · Very Very Hard
Chapter 4: Carbon and Its Compounds — Sets 05
Chapter-wise Practice · Very Very Hard
Chapter 4: Carbon and Its Compounds — Sets 06
Chapter-wise Practice · Very Very Hard
Chapter 4: Carbon and Its Compounds — Sets 07
Chapter-wise Practice · Very Very Hard
Chapter 4: Carbon and Its Compounds — Sets 08
Chapter-wise Practice · Very Very Hard
Chapter 4: Carbon and Its Compounds — Sets 09
Chapter-wise Practice · Very Very Hard
Chapter 4: Carbon and Its Compounds — Sets 10
Chapter-wise Practice · Very Very Hard
Carbon and Its Compounds Frequently Asked Questions
How should I prepare Carbon and Its Compounds for Class 10 Foundation Chemistry?
Revise the core concepts first, make a short list of important relationships or exceptions, and then solve chapter-focused MCQs while reviewing every error.
How can ChemNexa help with Carbon and Its Compounds practice?
This page provides public sample questions and links to published ChemNexa tests so you can combine quick revision with structured practice.
What should I do after getting an MCQ wrong?
Identify whether the mistake came from a concept gap, calculation, unit, sign, wording or memory error, review that point, and then attempt a similar question again.
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