Before attempting the worksheet, watch this complete tutorial on the Carbon and Its Compounds for Class 10. It will help you understand concepts clearly and solve questions confidently.
Complete Carbon and Its Compounds tutorial for Class 10 below ⬇️
MULTIPLE CHOICE QUESTIONS
1. The functional group present in CH₃CH₂COOH is:
(a) –OH
(b) –CHO
(c) –COOH
(d) –CO–
2. The image represents the structure of a few hydrocarbon compounds.
Which of these compounds can be classified as alkynes?
(a) only (A)
(b) only (B)
(c) both (A) and (D)
(d) both (B) and (C)
3. The general formula of alkenes is:
(a) CₙH₂ₙ₊₂
(b) CₙH₂ₙ
(c) CₙH₂ₙ₋₂
(d) CₙHₙ
4. Which compound will give a sooty flame on burning?
(a) Methane
(b) Ethane
(c) Ethyne
(d) Propane
5. The number of covalent bonds in ethene (C₂H₄) is:
(a) 4
(b) 5
(c) 6
(d) 7
6. Which of the following is a saturated hydrocarbon?
(a) C₂H₂
(b) C₂H₄
(c) C₃H₆
(d) C₄H₁₀
ASSERTION–REASONING QUESTIONS
7.
Assertion (A): Carbon forms a large number of compounds.
Reason (R): Carbon atoms can form strong covalent bonds with other carbon atoms.
8.
Assertion (A): Ethanol is a good solvent.
Reason (R): Ethanol dissolves both polar and non-polar substances.
9.
Assertion (A): Diamond does not conduct electricity.
Reason (R): All four valence electrons of carbon are used in bond formation.
10.
Assertion (A): Detergents are effective in hard water.
Reason (R): Detergents do not form insoluble salts with calcium and magnesium ions.
ONE MARK QUESTIONS
11. Write the general formula of alkynes.
12. Name the gas evolved when ethanol reacts with sodium.
13. Write the molecular formula of propane.
14. What is the valency of carbon?
15. Name the functional group present in aldehydes.
TWO MARK QUESTIONS
16. Why do covalent compounds have low melting and boiling points?
17. Write two differences between ethanol and ethanoic acid.
18. Why does ethyne burn with a sooty flame?
19. Define homologous series. Write two characteristics.
20. What is meant by substitution reaction? Give one example.
THREE MARK QUESTIONS
21. Explain the process of refining of petroleum.
22. Distinguish between alkanes, alkenes, and alkynes on the basis of:
- General formula
- Nature of bonds
- Example
23. Draw the electron dot structure of methane (CH₄).
PREVIOUS YEAR–TYPE QUESTIONS
24. Explain why carbon compounds are poor conductors of electricity. (2020)
25. Give reasons:
(i) Covalent compounds are bad conductors of electricity.
(ii) Graphite conducts electricity but diamond does not. (2019)
26. Write the first two members of homologous series of alcohols. (Delhi)
CASE STUDY / PASSAGE-BASED QUESTIONS
27. Carbon compounds show a variety of properties depending on the functional group present. Functional groups are atoms or groups of atoms that determine the chemical properties of organic compounds.
(i) Which functional group is present in alcohols?
(ii) Name the functional group in ethanoic acid.
(iii) Which functional group is present in ketones?
👇 Check out quick revision video on Carbon and Its Compounds 👇
