Mastering Carbon and Its Compounds: An MCQ Guide for Class 10 Students

Dear Readers, thank you for visiting this thorough blog post that explores the fascinating field of "Carbon and Its Compounds." You've come to the perfect site if you're a Class 10 student getting ready for your exams. Through the use of multiple choice questions (MCQs), we will explore the basic ideas of carbon chemistry and its compounds in this blog post.

The ability of carbon, the fourth most prevalent element in the universe, to produce a very diverse range of compounds has earned it a distinct place in the field of chemistry. The richness and diversity of life as we know it stems from this adaptability. It makes sense that a key section of the book is devoted to the study of carbon and its compounds.

50 Multiple Choice Questions (MCQs) on "Carbon and Its Compounds" for Class 10, along with their answers and explanations. These questions cover various aspects of carbon chemistry and its compounds, and practicing them will undoubtedly help you prepare for your examination and score well. Let's get started!

Carbon And Its Compounds Class 10 MCQs-

1. Which element forms the basis of all organic compounds?

a) Hydrogen

b) Oxygen

c) Carbon

d) Nitrogen

Answer: c) Carbon

Explanation: Carbon is the primary element present in all organic compounds, making it the backbone of organic chemistry.

2. The number of valence electrons in a carbon atom is:

a) 2

b) 4

c) 6

d) 8

Answer: b) 4

Explanation: Carbon has four valence electrons, allowing it to form up to four bonds with other atoms.

3. Which type of bonding is most common in organic compounds?

a) Ionic bonding

b) Covalent bonding

c) Metallic bonding

d) Hydrogen bonding

Answer: b) Covalent bonding

Explanation: Organic compounds primarily involve covalent bonding, where atoms share electrons to form stable molecules.

4. Which of the following is a hydrocarbon with a single bond between carbon atoms?

a) Alkane

b) Alkene

c) Alkyne

d) Aromatic compound

Answer: a) Alkane

Explanation: Alkanes are hydrocarbons with single bonds between carbon atoms.

5. The general formula of alkanes is:

a) CnH2n

b) CnH2n+2

c) CnH2n-2

d) CnHn

Answer: b) CnH2n+2

Explanation: The general formula of alkanes is CnH2n+2, where "n" represents the number of carbon atoms.

6. Which organic compound is represented by the formula C2H4?

a) Ethane

b) Ethene

c) Ethyne

d) Methane

Answer: b) Ethene

Explanation: C2H4 is the molecular formula of ethene, which is an alkene.

7. The process of converting alkenes into alkanes is called:

a) Hydrogenation

b) Halogenation

c) Combustion

d) Polymerization

Answer: a) Hydrogenation

Explanation: Hydrogenation is the process of adding hydrogen to alkenes to convert them into alkanes.

8. Which of the following compounds is responsible for the greenhouse effect?

a) Carbon monoxide

b) Carbon dioxide

c) Methane

d) Ethanol

Answer: b) Carbon dioxide

Explanation: Carbon dioxide is a greenhouse gas that contributes to the greenhouse effect, leading to global warming.

9. The functional group present in alcohols is:

a) -OH

b) -COOH

c) -NH2

d) -CHO

Answer: a) -OH

Explanation: Alcohols have the functional group -OH (hydroxyl group).

10. What is the name of the compound CH3-CH2-O-CH2-CH3?

a) Ethyl ether

b) Ethanol

c) Ethanoic acid

d) Ethene

Answer: a) Ethyl ether

Explanation: The compound CH3-CH2-O-CH2-CH3 is ethyl ether, which has the formula C2H5OC2H5.

11. The process of converting an alcohol into an alkene is called:

a) Fermentation

b) Dehydration

c) Esterification

d) Saponification

Answer: b) Dehydration

Explanation: Dehydration is the process of removing water from an alcohol, resulting in the formation of an alkene.

12. Which gas is produced during the fermentation of sugars by yeast?

a) Oxygen

b) Nitrogen

c) Carbon dioxide

d) Hydrogen

Answer: c) Carbon dioxide

Explanation: During fermentation, yeast converts sugars into ethanol and carbon dioxide.

13. The process of converting fats and oils into soap is known as:

a) Fermentation

b) Saponification

c) Esterification

d) Hydrogenation

Answer: b) Saponification

Explanation: Saponification is the process of hydrolyzing fats and oils using a strong base to produce soap and glycerol.

14. Which type of carbon compounds contains a carbonyl group (C=O)?

a) Aldehyde

b) Ketone

c) Ester

d) Carboxylic acid

Answer: b) Ketone

Explanation: Ketones contain a carbonyl group (C=O) bonded to two carbon atoms.

15. The functional group present in carboxylic acids is:

a) -OH

b) -COOH

c) -NH2

d) -CHO

Answer: b) -COOH

Explanation: Carboxylic acids have the functional group -COOH (carboxyl group).

16. Which compound is responsible for the pungent smell of garlic?

a) Ethanol

b) Acetic acid

c) Methanoic acid

d) Allicin

Answer: d) Allicin

Explanation: Allicin is a compound present in garlic that is responsible for its pungent smell and medicinal properties.

17. The process of adding chlorine or bromine to an alkane is called:

a) Hydrogenation

b) Halogenation

c) Combustion

d) Saponification

Answer: b) Halogenation

Explanation: Halogenation is the process of adding halogens like chlorine or bromine to an alkane.

18. The polymerization of ethene results in the formation of:

a) Polyethylene

b) Polypropylene

c) PVC (Polyvinyl chloride)

d) Teflon

Answer: a) Polyethylene

Explanation: Polymerization of ethene yields polyethylene, a widely used plastic.

19. Which gas is released when calcium carbonate (CaCO3) reacts with hydrochloric acid (HCl)?

a) Oxygen

b) Carbon dioxide

c) Hydrogen

d) Nitrogen

Answer: b) Carbon dioxide

Explanation: Calcium carbonate reacts with hydrochloric acid to form calcium chloride, water, and carbon dioxide.

20. The process of burning a carbon compound in the presence of oxygen to produce carbon dioxide and water is called:

a) Fermentation

b) Combustion

c) Polymerization

d) Saponification

Answer: b) Combustion

Explanation: Combustion is the chemical process of burning a carbon compound in the presence of oxygen.

21. Which of the following is a saturated hydrocarbon?

a) Ethane

b) Ethene

c) Ethyne

d) Methane

Answer: d) Methane

Explanation: Methane is a saturated hydrocarbon as it contains only single bonds between carbon atoms.

22. Which compound is used as an antiseptic to clean wounds?

a) Ethanol

b) Methanol

c) Propanol

d) Chloroform

Answer: a) Ethanol

Explanation: Ethanol is commonly used as an antiseptic to clean wounds due to its disinfectant properties.

23. The process of converting an alkene into an alkane is called:

a) Hydrogenation

b) Dehydration

c) Esterification

d) Saponification

Answer: a) Hydrogenation

Explanation: Hydrogenation is the process of adding hydrogen to an alkene to convert it into an alkane.

24. Which of the following is the correct IUPAC name for CH3-CH2-COOH?

a) Ethyl ethanoate

b) Ethanoic acid

c) Ethyl acetate

d) Ethene

Answer: b) Ethanoic acid

Explanation: CH3-CH2-COOH is ethanoic acid, also known as acetic acid.

carbon and its compounds class 10 mcq online test

25. What is the name of the compound CH3-CH2-CHO?

a) Ethanoic acid

b) Ethene

c) Ethanal

d) Ethanol

Answer: c) Ethanal

Explanation: CH3-CH2-CHO is ethanal, also known as acetaldehyde.

26. The process of converting alkenes into alcohols is called:

a) Fermentation

b) Hydrogenation

c) Esterification

d) Halogenation

Answer: b) Hydrogenation

Explanation: Hydrogenation is the process of adding hydrogen to alkenes to convert them into alcohols.

27. The monomer unit of polypropylene is derived from:

a) Propene

b) Ethene

c) Propyne

d) Propionaldehyde

Answer: a) Propene

Explanation: Polypropylene is derived from the monomer unit propene.

28. What is the name of the compound CH3-CH2-CH2-CH3?

a) Ethanol

b) Propane

c) Ethane

d) Butane

Answer: b) Propane

Explanation: CH3-CH2-CH2-CH3 is propane, which contains three carbon atoms.

29. The functional group present in esters is:

a) -OH

b) -COOH

c) -COO-

d) -CHO

Answer: c) -COO-

Explanation: Esters have the functional group -COO-, which is known as the ester group.

30. Which of the following is the correct IUPAC name for CH3-CH2-CH2-COOH?

a) Butanoic acid

b) Propanoic acid

c) Butyric acid

d) Butyl acetate

Answer: a) Butanoic acid

Explanation: CH3-CH2-CH2-COOH is butanoic acid, which contains four carbon atoms.

31. The process of converting alcohols into carboxylic acids is called:

a) Fermentation

b) Dehydration

c) Esterification

d) Oxidation

Answer: d) Oxidation

Explanation: Oxidation of alcohols leads to the formation of carboxylic acids.

32. Which compound is used as a solvent for paints and varnishes?

a) Methanol

b) Propanol

c) Acetone

d) Toluene

Answer: d) Toluene

Explanation: Toluene is commonly used as a solvent for paints and varnishes.

33. Which gas is produced when ethanoic acid reacts with sodium carbonate?

a) Oxygen

b) Carbon dioxide

c) Hydrogen

d) Nitrogen

Answer: b) Carbon dioxide

Explanation: Ethanoic acid reacts with sodium carbonate to produce sodium ethanoate, water, and carbon dioxide.

34. The process of converting alcohols into ethers is called:

a) Fermentation

b) Esterification

c) Dehydration

d) Substitution

Answer: c) Dehydration

Explanation: Dehydration of alcohols leads to the formation of ethers.

35. Which of the following compounds has a pleasant, fruity smell and is used as a flavoring agent?

a) Methanol

b) Ethanol

c) Methanal

d) Ethyl ethanoate

Answer: d) Ethyl ethanoate

Explanation: Ethyl ethanoate has a pleasant, fruity smell and is used as a flavoring agent in various food products.

36. The monomer unit of polyvinyl chloride (PVC) is derived from:

a) Vinyl chloride

b) Ethene

c) Propene

d) Acetylene

Answer: a) Vinyl chloride

Explanation: The monomer unit of PVC is derived from vinyl chloride.

37. Which compound is used as an antifreeze in automobile radiators?

a) Ethanol

b) Ethylene glycol

c) Methanol

d) Propanol

Answer: b) Ethylene glycol

Explanation: Ethylene glycol is used as an antifreeze in automobile radiators due to its ability to lower the freezing point of water.

38. Which of the following compounds is responsible for the sweet taste of fruits?

a) Ethanoic acid

b) Ethanol

c) Methanoic acid

d) Ethyl ethanoate

Answer: d) Ethyl ethanoate

Explanation: Ethyl ethanoate is responsible for the sweet smell and taste of fruits.

39. The process of converting an alcohol into an ester is called:

a) Fermentation

b) Dehydration

c) Esterification

d) Halogenation

Answer: c) Esterification

Explanation: Esterification is the process of combining an alcohol and a carboxylic acid to form an ester.

40. Which compound is used as an anesthetic in medical procedures?

a) Ethanol

b) Methanol

c) Chloroform

d) Propanol

Answer: c) Chloroform

Explanation: Chloroform has been used as an anesthetic in medical procedures, though it is no longer commonly used due to safety concerns.

41. The general formula of alcohol is:

a) CnH2n

b) CnH2n+2

c) CnH2n-2

d) CnHn

Answer: b) CnH2n+2

Explanation: The general formula of alcohols is CnH2n+2, where "n" represents the number of carbon atoms.

42. Which gas is produced when ethanoic acid reacts with sodium hydrogen carbonate (baking soda)?

a) Oxygen

b) Carbon dioxide

c) Hydrogen

d) Nitrogen

Answer: b) Carbon dioxide

Explanation: Ethanoic acid reacts with sodium hydrogen carbonate to produce sodium ethanoate, water, and carbon dioxide.

43. The process of converting an alkane into alcohol is called:

a) Fermentation

b) Hydrogenation

c) Esterification

d) Halogenation

Answer: b) Hydrogenation

Explanation: Hydrogenation is the process of adding hydrogen to an alkane to convert it into an alcohol.

44. Which gas is released during the fermentation of glucose by yeast?

a) Oxygen

b) Nitrogen

c) Carbon dioxide

d) Hydrogen

Answer: c) Carbon dioxide

Explanation: During fermentation, yeast converts glucose into ethanol and carbon dioxide.

45. The process of converting alkenes into alkynes is called:

a) Fermentation

b) Hydrogenation

c) Halogenation

d) Polymerization

Answer: d) Polymerization

Explanation: Polymerization is the process of combining monomers to form larger molecules, such as converting alkenes into alkynes.

46. The functional group present in amines is:

a) -OH

b) -COOH

c) -NH2

d) -CHO

Answer: c) -NH2

Explanation: Amines have the functional group -NH2, which consists of a nitrogen atom bonded to two hydrogen atoms.

47. What is the name of the compound CH3-CH2-NH2?

a) Ethyl amine

b) Ethanoic acid

c) Ethyne

d) Ethanol

Answer: a) Ethyl amine

Explanation: CH3-CH2-NH2 is ethyl amine, which contains an amino group (-NH2).

48. The monomer unit of polyethylene is derived from:

a) Ethene

b) Propene

c) Ethanol

d) Butene

Answer: a) Ethene

Explanation: The monomer unit of polyethylene is derived from ethene.

49. Which compound is used as a disinfectant for water purification?

a) Methanol

b) Ethanol

c) Ethanoic acid

d) Chlorine

Answer: d) Chlorine

Explanation: Chlorine is commonly used as a disinfectant for water purification.

50. The process of converting aldehydes and ketones into alcohols is called:

a) Fermentation

b) Reduction

c) Esterification

d) Halogenation

Answer: b) Reduction

Explanation: Reduction is the process of adding hydrogen to aldehydes and ketones to convert them into alcohol.

Carbon And Its CompoundsClass 10 MCQ Pdf.

With these 50 MCQs and their explanations, you now have a comprehensive practice resource for mastering the concepts of "Carbon and Its Compounds" for your Class 10 examination. Remember to approach your studies with dedication, practice regularly, and seek further clarification if needed. Best of luck, and may you achieve great success in your exams!

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