This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Science > Carbon And Its Compounds > Class 10 Science Chapter 4 Carbon And Its Compounds – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 3 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. This organic compound is responsible for storing & transmitting our genetic information: A) Lipids. B) Nucleic Acids. C) Carbohydrates. D) Proteins. Show Answer Correct Answer: B) Nucleic Acids. 2. Copper(II) carbonate A) Organic compound. B) Inorganic compound. C) All the above. D) None of the above. Show Answer Correct Answer: B) Inorganic compound. 3. What is the main source of hydrocarbons mentioned in the text? A) Biomass. B) Coal. C) Petroleum. D) Natural gas. Show Answer Correct Answer: C) Petroleum. 4. Name the compound with formula C2H4 A) Ethene. B) Propane. C) Methane. D) Ethane. Show Answer Correct Answer: A) Ethene. 5. Describe the structure of benzene and its significance. A) Benzene is a stable aromatic compound with a hexagonal ring structure and delocalized electrons, significant for its role in organic chemistry and as a precursor to many chemical compounds. B) Benzene is a linear molecule with a triple bond structure. C) Benzene is a reactive aliphatic compound with a branched chain structure. D) Benzene is a saturated compound with a square shape and single bonds. Show Answer Correct Answer: A) Benzene is a stable aromatic compound with a hexagonal ring structure and delocalized electrons, significant for its role in organic chemistry and as a precursor to many chemical compounds. 6. Which among the following are called scum? A) RCOOCa & RCOOMg. B) RCOONa & RCOOMg. C) RCOONa & RCOOK. D) RCOONa & RCOOCa. Show Answer Correct Answer: A) RCOOCa & RCOOMg. 7. Vulcanisation is a process to add X into rubber polymers.X is A) Sulphur. B) Oxygen. C) Nitrogen. D) Hydrogen. Show Answer Correct Answer: A) Sulphur. 8. What is the difference between saturated and unsaturated fats? A) Saturated fats have no double bonds between carbon atoms, while unsaturated fats have one or more double bonds. B) Saturated fats are healthier than unsaturated fats. C) Saturated fats contain more calories than unsaturated fats. D) Saturated fats are liquid at room temperature, while unsaturated fats are solid. Show Answer Correct Answer: A) Saturated fats have no double bonds between carbon atoms, while unsaturated fats have one or more double bonds. 9. C3H8 belongs to the homologous series of A) Alkenes. B) Alkanes. C) Alkynes. D) Cyclo alkanes. Show Answer Correct Answer: B) Alkanes. 10. Ethanol reacts with sodium and forms two products. These are A) Sodium ethanoate and hydrogen. B) Sodium ethanoate and oxygen. C) Sodium ethoxide and hydrogen. D) Sodium ethoxide and oxygen. Show Answer Correct Answer: C) Sodium ethoxide and hydrogen. 11. What are lipids primarily used for in the body? A) Energy storage, insulation, and making up cell membranes. B) Providing immediate energy for cellular functions. C) Transporting oxygen in the bloodstream. D) Regulating body temperature through sweat. Show Answer Correct Answer: A) Energy storage, insulation, and making up cell membranes. 12. Which of the following hydrocarbons has a double bond in its carbon skeleton? A) C$_{2}$H$_{6}$. B) C$_{2}$H$_{4}$. C) C$_{2}$H$_{2}$. D) C$_{3}$H$_{8}$. Show Answer Correct Answer: B) C$_{2}$H$_{4}$. 13. How is the burning of fossil fuels related to global warming? A) Magic. B) Fuels are hot. C) Greenhouse effect. D) Photosynthesis. Show Answer Correct Answer: C) Greenhouse effect. 14. How many steps of mechanism for Free Radical Substitution Reaction of Alkane. A) 3. B) 2. C) 1. D) 4. Show Answer Correct Answer: A) 3. 15. When heat is applied to a hydrocarbon and it melts, the energy is being used to ..... A) Separate atoms. B) Break covalent bonds. C) Break a molecule. D) Overcome intermolecular forces. Show Answer Correct Answer: D) Overcome intermolecular forces. 16. How many valence electrons does carbon have? A) 2. B) 4. C) 6. D) 8. Show Answer Correct Answer: B) 4. 17. What is the main source of energy for the body? A) Proteins. B) Nucleic acids. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: C) Carbohydrates. 18. Which of the following is not in the same homologous series? A) Propene. B) Methylpropane. C) Butane. D) Heptane. Show Answer Correct Answer: A) Propene. 19. This organic compound is used for food or short term energy. A) Protein. B) Carbohydrates. C) Lipids. D) Nucleic Acid. Show Answer Correct Answer: B) Carbohydrates. 20. Oxygen is a gas produced by ..... and used by ..... A) Plants and animals. B) Photosynthesis and carbon dioxide. C) Animals and plants. D) Carbon dioxide and photosynthesis. Show Answer Correct Answer: A) Plants and animals. 21. What is the significance of carbon in organic chemistry? A) Carbon atoms cannot form multiple bonds with other elements. B) Carbon is significant in organic chemistry as it forms the backbone of organic molecules, enabling diverse structures and functions. C) Carbon is not essential for life forms. D) Carbon is only found in inorganic compounds. Show Answer Correct Answer: B) Carbon is significant in organic chemistry as it forms the backbone of organic molecules, enabling diverse structures and functions. 22. An example of this organic compound or macromolecule would be glucose or fructose: A) Carbohydrate. B) Nucleic Acid. C) Lipid. D) Protein. Show Answer Correct Answer: A) Carbohydrate. 23. A chemical bond in which a hydrogen atom of one molecule is attracted to an electronegative atom, especially a nitrogen, oxygen, or fluorine atom, usually of another molecule. A) Ionic bond. B) Polarity bond. C) Hydrogen Bond. D) Covalent bond. Show Answer Correct Answer: C) Hydrogen Bond. 24. What is Deoxyribonucleic acid (DNA)? A) A self-replicating nucleic acid that contains the sugar deoxyribose and carries the genetic instructions for an organism's development. B) A type of protein that helps in muscle contraction. C) A carbohydrate that provides energy to cells. D) A lipid that stores energy in the body. Show Answer Correct Answer: A) A self-replicating nucleic acid that contains the sugar deoxyribose and carries the genetic instructions for an organism's development. 25. Which of the following are oxidised products of propan-1-ol? (1) propanal (2) propanone (3) propanoic acid A) And (2) only. B) And (3) only. C) And (3) only. D) , (2) and (3). Show Answer Correct Answer: B) And (3) only. 26. Explain how the boiling point of alkanes changes with molecular size. A) The boiling point of alkanes increases with molecular size. B) The boiling point of alkanes remains constant regardless of molecular size. C) The boiling point of alkanes decreases with molecular size. D) The boiling point of alkanes is unrelated to molecular size. Show Answer Correct Answer: A) The boiling point of alkanes increases with molecular size. 27. Why are hydrocarbons considered important fuels? A) Hydrocarbons are only found in renewable energy sources. B) Hydrocarbons are energy-dense and efficient fuels used for powering vehicles and generating energy. C) Hydrocarbons are primarily used in the production of plastics. D) Hydrocarbons are ineffective for energy generation and transportation. Show Answer Correct Answer: B) Hydrocarbons are energy-dense and efficient fuels used for powering vehicles and generating energy. 28. Which of the following alcohols does not undergo a dehydration reaction? A) CH$_{3}$OH. B) C$_{4}$H$_{9}$OH. C) C$_{3}$H$_{7}$OH. D) C$_{2}$H$_{5}$OH. Show Answer Correct Answer: A) CH$_{3}$OH. 29. All carbohydrate names end with which ending: A) Ose. B) Ise. C) Ese. D) Ase. Show Answer Correct Answer: A) Ose. 30. Which of the following are types of organic compound? A) Lipids. B) Nucleic acid. C) Protein. D) All of the above. Show Answer Correct Answer: D) All of the above. 31. How do alkenes typically react in addition reactions? A) Alkenes react in addition reactions by breaking their double bond to add new atoms or groups. B) Alkenes only react by eliminating hydrogen atoms. C) Alkenes react by forming triple bonds with other molecules. D) Alkenes do not participate in addition reactions at all. Show Answer Correct Answer: A) Alkenes react in addition reactions by breaking their double bond to add new atoms or groups. 32. The three types of carbohydrates are A) Amino acids, nucleic acids, lipids. B) Sugars, starches, cellulose. C) Sugars, lipids, cellulose. D) Cellulose, glycogen, lipids. Show Answer Correct Answer: B) Sugars, starches, cellulose. 33. Compounds with an-NH2 on 1 end a-COOH on the other end A) Proteins. B) Amino acids. C) Nucleic acids. D) Glucose. Show Answer Correct Answer: B) Amino acids. 34. Which of the following alkanes has the highest boiling point? A) Butane. B) Ethane. C) Propane. D) Pentane. Show Answer Correct Answer: D) Pentane. 35. Which of the following is an example of a nucleic acid? A) DNA. B) Glucose. C) Phospholipid. D) Enzymes. Show Answer Correct Answer: A) DNA. 36. DNA and RNA are examples of A) Proteins. B) Lipids. C) Carbs. D) Nucleic acids. Show Answer Correct Answer: D) Nucleic acids. 37. Carbon is special because it can form how many bonds? A) 3. B) 4. C) 1. D) 2. Show Answer Correct Answer: B) 4. 38. Which of the following is used to oxidise ethanol to ethanoic acid? A) Alkaline KMnO4. B) Nickel. C) Acidified K2Cr2O7. D) Both a and c. Show Answer Correct Answer: D) Both a and c. 39. What is a Polymer? A) A small molecule composed of one unit. B) A large molecule composed of many repeating smaller units called monomers. C) A type of chemical reaction. D) A process of breaking down molecules. Show Answer Correct Answer: B) A large molecule composed of many repeating smaller units called monomers. 40. What is a functional group in organic chemistry? A) A functional group is a single atom that defines the structure of a compound. B) A functional group is a specific group of atoms that imparts distinct chemical properties to a molecule. C) A functional group is a type of chemical reaction that occurs in molecules. D) A functional group is a molecular shape that determines physical properties. Show Answer Correct Answer: B) A functional group is a specific group of atoms that imparts distinct chemical properties to a molecule. 41. Carbon has a strong bond to other carbon atoms A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 42. What is the name of the alkane with four carbons? A) Ethane. B) Methane. C) Butane. D) Propane. Show Answer Correct Answer: C) Butane. 43. The process used to combine monomers into polymers is called A) Hydrolysis. B) Dehydration synthesis. C) Gluing. D) Hydrogen bonding. Show Answer Correct Answer: B) Dehydration synthesis. 44. Polymerization is used to produce all following product except for: A) PVC. B) Paper. C) Polyethylene. D) Polystyrene. Show Answer Correct Answer: B) Paper. 45. Which of the following is an organic carbon compound? A) Carbon dioxide gas. B) Sucrose. C) Diamond. D) Sodium chloride. Show Answer Correct Answer: B) Sucrose. 46. What method is used to separate crude oil into hydrocarbons? A) Erosion. B) Electrolysis. C) Simple distillation. D) Fractional distillation. Show Answer Correct Answer: D) Fractional distillation. 47. Aspirin is NOT used for A) Reducing the bleeding of stomach lining. B) Relieving pains. C) Reducing the risks of heart attacks. D) Reducing fever. Show Answer Correct Answer: A) Reducing the bleeding of stomach lining. 48. Which of the following oxidising agents convert ethanol to ethanoic acid? A) Alkaline potassium permanganate or Acidified potassium dichromate. B) Itric acid (HNO3) or nitrate compounds. C) Ozone or Hydrogen peroxide. D) Lithium aluminium hydride or Sodium borohydride. Show Answer Correct Answer: A) Alkaline potassium permanganate or Acidified potassium dichromate. 49. Which of the following is the general formula for alcohol? A) C$_{n}$H$_{2n}$. B) C$_{n}$H$_{2n}$O. C) C$_{n}$H$_{2n+1}$COOH. D) C$_{n}$H$_{2n+1}$OH. Show Answer Correct Answer: D) C$_{n}$H$_{2n+1}$OH. 50. Choose the particle that has no charge. A) Nucleus. B) Proton. C) Neutron. D) Electron. Show Answer Correct Answer: C) Neutron. 51. What are the products formed when propane is burnt in excess oxygen? A) Carbon and hydrogen. B) Carbon dioxide and water. C) Carbon monoxide and water. D) Carbon monoxide and hydrogen. Show Answer Correct Answer: B) Carbon dioxide and water. 52. What is another name for carbon compounds? A) Fullerenes. B) Hydrocarbons. C) Carbohydrates. D) Organic compounds. Show Answer Correct Answer: D) Organic compounds. 53. What is a substance that accelerates the rate of a chemical reaction? A) Nucleotide. B) Amino acid. C) Reactant. D) Enzyme. Show Answer Correct Answer: D) Enzyme. 54. C5H12 has ..... covalent bonds A) 17. B) 12. C) 5. D) 16. Show Answer Correct Answer: D) 16. 55. Which compound does NOT contain carbon atoms? A) Ammonium. B) Carbon dioxide. C) Calcium carbonate. D) Methane. Show Answer Correct Answer: A) Ammonium. 56. What is the definition of organic carbon compounds? A) Compounds that contain carbon-hydrogen bonds in their molecular structure. B) Compounds that do not contain carbon in their molecular structure. C) Compounds that are exclusively of inorganic origin. D) Compounds that only contain carbon in their atomic structure. Show Answer Correct Answer: A) Compounds that contain carbon-hydrogen bonds in their molecular structure. 57. Which one will have double bond? A) C9H16. B) C7H16. C) C8H16. D) C8H18. Show Answer Correct Answer: C) C8H16. 58. Why is ice less dense than water? A) Ionic Bonding. B) Polar Bonding. C) Covalent Bonding. D) Hydrogen Bonding. Show Answer Correct Answer: D) Hydrogen Bonding. 59. How many electrons are shared in a double bond? A) 1. B) 2. C) 6. D) 4. Show Answer Correct Answer: D) 4. 60. Which of the following is an example of a carbohydrate? A) Nitrogen. B) Glycerol. C) Glucose. D) Fatty acids. Show Answer Correct Answer: C) Glucose. ← PreviousNext →Related QuizzesScience QuizzesClass 10 QuizzesClass 10 Science Chapter 4 Carbon And Its Compounds Quiz 1Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 2Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 4Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 5Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 6Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 7Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 8Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books