Worksheet Carbon Class 10

 Here are 20 multiple-choice questions (MCQs) based on the topic Carbon and Its Compounds from Class 10 NCERT:

1. Which of the following is the general formula of alkanes?

 a) CnH2n

b) CnH2n+2

c) CnH2n-2

d) CnH2n+1

2. Which of the following compounds is a saturated hydrocarbon?

 a) Ethene

b) Ethyne

c) Propane

d) Propyne

3. What type of bond is present in alkenes? 

a) Single bond

b) Double bond

c) Triple bond

d) Ionic bond

4. What is the IUPAC name of CH4?

 a) Methane

b) Ethane

c) Propane

d) Butane

5. Which of the following is a functional group? a) –OH

b) –CH3

c) –C=O

d) Both a and c

6. Which element exhibits catenation the most? a) Silicon

b) Carbon

c) Phosphorus

d) Nitrogen

7. What is the common name of ethanoic acid?

 a) Formic acid

b) Acetic acid

c) Propionic acid

d) Butyric acid

8. What is the molecular formula of ethanol?

 a) C2H6O

b) C3H7O

c) C2H4O2

d) C2H5OH

9. Which of the following is NOT an allotrope of carbon? 

a) Diamond

b) Graphite

c) Fullerene

d) Limestone

10. What is the nature of the bond in methane (CH4)?

 a) Ionic

b) Covalent

c) Polar covalent

d) Hydrogen

11. How many covalent bonds are formed by carbon in methane?

 a) 1

b) 2

c) 3

d) 4

12. Which of the following hydrocarbons undergoes substitution reactions? 

a) Alkanes

b) Alkenes

c) Alkynes

d) Aromatics

13. What is the product of the reaction between ethanol and sodium? 

a) Sodium ethanoate

b) Sodium acetate

c) Sodium ethoxide

d) Sodium carbonate

14. Which of the following will turn blue litmus paper red? 

a) Ethanol

b) Ethanoic acid

c) Sodium hydroxide

d) Sodium chloride

15. In which reaction is an alcohol formed from an alkene? 

a) Hydration

b) Hydrogenation

c) Dehydration

d) Oxidation

16. Which of the following statements is true about soap? 

a) Soap is a salt of a fatty acid.

b) Soap is a simple carbohydrate.

c) Soap is a type of protein.

d) Soap does not form a lather with hard water.

17. Which of the following reactions is used to convert alcohol to ethanoic acid?

 a) Oxidation

b) Dehydration

c) Reduction

d) Substitution

18. Which of the following hydrocarbons contains a triple bond?

 a) Methane

b) Ethene

c) Ethyne

d) Propane

19. How many isomers can be formed from the molecular formula C4H10? 

a) 1

b) 2

c) 3

d) 4

20. Which of the following is an example of a homologous series? 

a) CH4, C2H6, C3H8

b) CH4, C2H4, C2H2

c) C6H6, C6H12, C6H14

d) C2H5OH, C2H4O, C2H2

Let me know if you'd like to modify any of these!

Here are the answers to the MCQs on Carbon and Its Compounds:

1. (b) CnH2n+2

2. (c) Propane

3. (b) Double bond

4. (a) Methane

5. (d) Both a and c

6. (b) Carbon

7. (b) Acetic acid

8. (d) C2H5OH

9. (d) Limestone

10. (b) Covalent

11. (d) 4

12. (a) Alkanes

13. (c) Sodium ethoxide

14. (b) Ethanoic acid

15. (a) Hydration

16. (a) Soap is a salt of a fatty acid.

17. (a) Oxidation

18. (c) Ethyne

19. (b) 2

20. (a) CH4, C2H6, C3H8

These should help reinforce the key concepts

 in the chapter. Let me know if you need further explanations!