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Writer's pictureVikas Yadav

50 MCQs, Carbon and its Compounds | CBSE Class X | Chemistry, Science

1. Which of the following is the main reason for the large number of organic compounds?

   a) Low reactivity of carbon

   b) Catenation property of carbon

   c) Metallic nature of carbon

   d) Isotopic forms of carbon

 

2. Which of the following compounds is the simplest hydrocarbon?

   a) Ethane

   b) Propane

   c) Methane

   d) Butane

 

3. Which allotrope of carbon is known for its hardness?

   a) Graphite

   b) Diamond

   c) Fullerene

   d) Amorphous carbon

 

4. The general formula for alkanes is:

   a) CnH2n+2

   b) CnH2n

   c) CnH2n-2

   d) CnHn

 

5. What type of bond is present in the ethene molecule?

   a) Single bond

   b) Double bond

   c) Triple bond

   d) Ionic bond

 

6. Which of the following is a saturated hydrocarbon?

   a) Ethyne

   b) Ethene

   c) Propane

   d) Butyne

 

7. The IUPAC name of the compound with the formula CH3CH2OH is:

   a) Methanol

   b) Ethanol

   c) Propanol

   d) Butanol

 

8. Which of the following is an isomer of butane?

   a) Methane

   b) Ethane

   c) Propane

   d) 2-Methylpropane

 

9. Which functional group is present in CH3COOH?

   a) Alcohol

   b) Aldehyde

   c) Ketone

   d) Carboxylic acid

 

10. The molecular formula of benzene is:

    a) C6H12

    b) C6H6

    c) C5H6

    d) C7H8

 

11. The process of converting unsaturated hydrocarbons into saturated hydrocarbons is called:

    a) Cracking

    b) Distillation

    c) Hydrogenation

    d) Fermentation

 

12. What is the name of the reaction in which ethanol is oxidized to acetic acid?

    a) Esterification

    b) Hydrogenation

    c) Saponification

    d) Oxidation

 

13. Which of the following statements is true about graphite?

    a) It is a good conductor of electricity.

    b) It is harder than diamond.

    c) It is used as an insulator.

    d) It is transparent.

 

14. What is the hybridization of carbon in methane (CH4)?

    a) sp

    b) sp2

    c) sp3

    d) sp3d

 

15. Which of the following is the correct molecular formula for propene?

    a) C3H6

    b) C3H8

    c) C4H10

    d) C2H4

 

16. What is the common name of ethanoic acid?

    a) Acetone

    b) Acetylene

    c) Acetic acid

    d) Alcohol

 

17. Which of the following is a characteristic property of carbon compounds?

    a) High melting and boiling points

    b) Poor conductors of electricity

    c) They are all colorless

    d) They form ionic bonds

 

18. What is the IUPAC name of the compound CH3COCH3?

    a) Propanal

    b) Propanone

    c) Ethanol

    d) Propanoic acid

 

19. The functional group present in alcohols is:

    a) -CHO

    b) -COOH

    c) -OH

    d) -CO-

 

20. Which hydrocarbon is commonly used as a fuel in gas stoves?

    a) Methane

    b) Ethane

    c) Propane

    d) Butane

 

21. The process of soap formation is called:

    a) Esterification

    b) Saponification

    c) Hydrogenation

    d) Fermentation

 

22. Which of the following statements about diamond is true?

    a) It is a good conductor of electricity.

    b) It is used as a lubricant.

    c) It is the hardest natural substance.

    d) It has a layered structure.

 

23. What is the molecular formula of ethyne?

    a) C2H4

    b) C2H6

    c) C2H2

    d) C2H8

 

24. Which of the following compounds is an aldehyde?

    a) CH3OH

    b) CH3COCH3

    c) CH3CHO

    d) CH3COOH

 

25. The hydrocarbon which contains a triple bond is called:

    a) Alkane

    b) Alkene

    c) Alkyne

    d) Cycloalkane

 

26. Which of the following is a use of ethanol?

    a) As a lubricant

    b) As a solvent

    c) As an insulator

    d) As a conductor

 

27. The structural formula of butane shows:

    a) 3 carbon atoms and 8 hydrogen atoms

    b) 4 carbon atoms and 8 hydrogen atoms

    c) 4 carbon atoms and 10 hydrogen atoms

    d) 2 carbon atoms and 6 hydrogen atoms

 

28. What type of isomerism is exhibited by butane and 2-methylpropane?

    a) Chain isomerism

    b) Position isomerism

    c) Functional group isomerism

    d) Tautomerism

 

29. The molecular formula of ethyl alcohol is:

    a) C2H5OH

    b) C2H4O2

    c) CH3OH

    d) C3H7OH

 

30. Which of the following is a primary alcohol?

    a) CH3CH2OH

    b) CH3CHOHCH3

    c) (CH3)3COH

    d) CH3COOH

 

31. Which of the following is a property of covalent compounds?

    a) High melting points

    b) Conduct electricity in molten state

    c) Form ions in solution

    d) Low melting and boiling points

 

32. Which of the following contains a carboxyl group?

    a) CH3COOH

    b) CH3OH

    c) CH3CHO

    d) C2H6

 

33. The molecular formula of methanol is:

    a) CH4O

    b) C2H6O

    c) C3H8O

    d) C4H10O

 

34. What is the IUPAC name of acetylene?

    a) Ethyne

    b) Ethene

    c) Ethane

    d) Ethanol

 

35. Which of the following is an unsaturated hydrocarbon?

    a) Butane

    b) Pentane

    c) Hexane

    d) Propene

 

36. Which of the following statements is true for esters?

    a) They have a fruity smell.

    b) They are formed by the reaction between alcohols and aldehydes.

    c) They have a salty taste.

    d) They contain the -OH group.

 

37. Which of the following compounds will decolorize bromine water?

    a) Ethane

    b) Ethene

    c) Propane

    d) Butane

 

38. The general formula for alkynes is:

    a) CnH2n+2

    b) CnH2n

    c) CnH2n-2

    d) CnHn

 

39. The IUPAC name for CH3CH2COOH is:

    a) Ethanoic acid

    b) Propanoic acid

    c) Butanoic acid

    d) Methanoic acid

 

40. Which of the following is the main product of the combustion of hydrocarbons?

    a) Carbon monoxide and water

    b) Carbon dioxide and water

    c) Carbon and hydrogen

    d) Carbon monoxide and hydrogen

 

41. Which functional group is found in aldehydes?

    a) -CO-

    b) -CHO

    c) -COOH

    d) -OH

 

42. Which compound is commonly used as an antiseptic?

    a) Ethanoic acid

    b) Ethanol

    c) Methanol

    d) Propanol

 

43. What is the name of the process in which unsaturated oils are converted into saturated fats?

    a) Saponification

    b) Polymerization

    c) Hydrogenation

    d) Oxidation

 

44. Which of the following hydrocarbons contains a double bond?

    a) Ethane

    b) Propane

    c) Butene

    d) Pentane

 

45. The compound with the formula C3H6 is:

    a) Propane

    b) Propene

    c) Propanol

    d) Propanone

 

46. What is the IUPAC name of CH3CH=CH2?

    a) Propane

    b) Propene

    c) Propyne

    d) Propanol

 

47. Which of the following is used as a fuel in welding torches?

    a) Ethanol

    b) Methane

    c) Propane

    d) Ethyne

 

48. What is the common name for the compound with the formula CH3COOCH3?

    a) Methyl acetate

    b) Ethyl acetate

    c) Propyl acetate

    d) Butyl acetate

 

49. Which of the following statements about fullerenes is true?

    a) They are allotropes of carbon.

    b) They are harder than diamond.

    c) They are good conductors of electricity.

    d) They have a hexagonal structure.

 

50. Which of the following compounds can exhibit isomerism?

    a) Methane

    b) Ethane

    c) Butane

    d) Propane

 

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Answers:

 

1. b) Catenation property of carbon 

2. c) Methane 

3. b) Diamond 

4. a) CnH2n+2 

5. b) Double bond 

6. c) Propane 

7. b) Ethanol 

8. d) 2-Methylpropane 

9. d) Carboxylic acid 

10. b) C6H6 

11. c) Hydrogenation 

12. d) Oxidation 

13. a) It is a good conductor of electricity. 

14. c) sp3 

15. a) C3H6 

16. c) Acetic acid 

17. b) Poor conductors of electricity 

18. b) Propanone 

19. c) -OH 

20. d) Butane 

21. b) Saponification 

22. c) It is the hardest natural substance. 

23. c) C2H2 

24. c) CH3CHO 

25. c) Alkyne 

26. b) As a solvent 

27. c) 4 carbon atoms and 10 hydrogen atoms 

28. a) Chain isomerism 

29. a) C2H5OH 

30. a) CH3CH2OH 

31. d) Low melting and boiling points 

32. a) CH3COOH 

33. a) CH4O 

34. a) Ethyne 

35. d) Propene 

36. a) They have a fruity smell. 

37. b) Ethene 

38. c) CnH2n-2 

39. b) Propanoic acid 

40. b) Carbon dioxide and water 

41. b) -CHO 

42. b) Ethanol 

43. c) Hydrogenation 

44. c) Butene 

45. b) Propene 

46. b) Propene 

47. d) Ethyne 

48. a) Methyl acetate 

49. a) They are allotropes of carbon. 

50. c) Butane 

 

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