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 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is unsaturated hydrocarbon? A) Ethanol. B) Glycerol. C) Propane. D) Ethene. Show Answer Correct Answer: D) Ethene. 2. Which of the following explains why the intake of saturated fats should be moderate? A) High cost. B) Decompose easily. C) High cholesterol. D) Low energy supply. Show Answer Correct Answer: C) High cholesterol. 3. In diamond, each carbon atom is bonded to four other carbon atoms to form A) A hexagonal array. B) A rigid three-dimensional structure. C) A structure in the shape of a football. D) A structure of a ring. Show Answer Correct Answer: B) A rigid three-dimensional structure. 4. Which of the following is used to oxidise alcohols? A) Acidifed K$_{2}$Cr$_{2}$O$_{7}$. B) Acidified NaOH(aq). C) Acidified H$_{2}$SO$_{4}$(aq). D) Acidified Al$_{2}$O$_{3}$(s). Show Answer Correct Answer: A) Acidifed K$_{2}$Cr$_{2}$O$_{7}$. 5. The firSt member of the alkyne homologous series is A) Ethyne. B) Methane. C) Ethene. D) Propyne. Show Answer Correct Answer: A) Ethyne. 6. What is a reactant? A) Chemicals that EXIT a chemical. B) Chemical that enter INTO a chemical reaction. C) Energy needed to. D) Chemical that speeds up a chemical reaction. Show Answer Correct Answer: B) Chemical that enter INTO a chemical reaction. 7. Which of the following pairs of compounds are isomers? A) Butane and butene. B) 2, 3-dimethylpentane and 3-methylpentane. C) 2-methylpentane and 2, 2-dimethylbutane. D) 2-methylpropane and 2-methylpropene. Show Answer Correct Answer: C) 2-methylpentane and 2, 2-dimethylbutane. 8. What is the IUPAC name of the first member of Homologous series of ketone? A) Methanone. B) Ethanone. C) Propanone. D) Butanone. Show Answer Correct Answer: C) Propanone. 9. According to this law, the current in a circuit equals the voltage difference divided by the resistance. A) Law of Conservation of Energy. B) Newton's First Law. C) Law of Conservation of Charges. D) Ohm's Law. Show Answer Correct Answer: D) Ohm's Law. 10. What is a monosaccharide? A) A type of protein that aids in digestion. B) The simplest form of carbohydrates, consisting of a single sugar molecule. C) A complex carbohydrate made of multiple sugar molecules. D) A lipid that stores energy in the body. Show Answer Correct Answer: B) The simplest form of carbohydrates, consisting of a single sugar molecule. 11. Plants use ..... to make their own food A) Water. B) Sunlight. C) Carbon dioxide. D) All of these. Show Answer Correct Answer: D) All of these. 12. Cellulose is a compound found in plants. It is made of a long chain of molecules with ringed structures. The molecules contain mostly carbon, hydrogen, and oxygen atoms in a ratio of approximately 1 carbon:2 hydrogen:1 oxygen. To which category of biological molecules does cellulose belong? A) Phospholipids. B) Carbohydrates. C) Nucleic acids. D) Proteins. Show Answer Correct Answer: B) Carbohydrates. 13. A scientist is analyzing a sample of tissue from a plant. Which of the following elements will be most abundant in the sample? A) Zinc and copper. B) Sodium and chlorine. C) Carbon and hydrogen. D) Magnesium and calcium. Show Answer Correct Answer: C) Carbon and hydrogen. 14. Which macromolecule acts as a catalyst in biochemical reactions? A) Proteins. B) Nucleic acids. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: A) Proteins. 15. Balance the equation:C2H4 + O2 $\rightarrow$ CO2 + H2O. A) C2H4 + 2 O2 $\rightarrow$ CO2 + H2O. B) C2H4 + 3 O2 $\rightarrow$ 2 CO2 + 2 H2O. C) C2H4 + 4 O2 $\rightarrow$ 3 CO2 + H2O. D) C2H4 + O2 $\rightarrow$ CO2 + 3 H2O. Show Answer Correct Answer: B) C2H4 + 3 O2 $\rightarrow$ 2 CO2 + 2 H2O. 16. What is the main difference between organic and inorganic compounds? A) Organic compounds contain carbon to carbon bonds. B) Inorganic compounds are obtained from plants and animals. C) Organic compounds are usually gases. D) Inorganic compounds contain carbon and hydrogen. Show Answer Correct Answer: A) Organic compounds contain carbon to carbon bonds. 17. Which one is unsaturated fatty acid? A) C$_{17}$H$_{31}$COOH. B) C$_{18}$H$_{37}$COOH. C) C$_{15}$H$_{31}$COOH. D) C$_{16}$H$_{33}$COOH. Show Answer Correct Answer: A) C$_{17}$H$_{31}$COOH. 18. A monomer is ..... A) A single atom. B) A single element. C) A building block for polymers. D) Is an inorganic molecule. Show Answer Correct Answer: C) A building block for polymers. 19. Can alkanes undergo reactions? A) Yes, they undergo hydrogenation. B) No, the stable molecules do not like to react. C) Yes, they can undergo substitution reactions like halogenation. D) No, they cannot undergo any reactions. Show Answer Correct Answer: C) Yes, they can undergo substitution reactions like halogenation. 20. Which of the following is the product formed when alcohol is burned in excess oxygen? A) Water and oxygen. B) Water and hydrogen. C) Water and carbon dioxide. D) Hydrogen and carbon dioxide. Show Answer Correct Answer: C) Water and carbon dioxide. 21. How many carbon atoms are in methane? A) 3. B) 1. C) 2. D) 4. Show Answer Correct Answer: B) 1. 22. Which among the following is an example of an organic compound? A) Carbon Monoxide. B) Glucose. C) Carbon Dioxide. D) Salt. Show Answer Correct Answer: B) Glucose. 23. Which statement best describes inorganic compound? A) Inorganic compounds are compounds do that not contain carbon and hydrogen. B) Inorganic compounds are compounds that do not contain carbon atoms only. C) Inorganic compounds are compounds that produced by living things. D) Inorganic compounds are compounds that contain carbon and oxygen only. Show Answer Correct Answer: A) Inorganic compounds are compounds do that not contain carbon and hydrogen. 24. Which one isn't a biomolecule? A) Lipids. B) Protiens. C) Nucleic bases. D) Carbohydrate. Show Answer Correct Answer: C) Nucleic bases. 25. Name the functional group present in CH3COCH3. A) Ketone. B) Alcohol. C) Carboxylic acid. D) Aldehyde. Show Answer Correct Answer: A) Ketone. 26. What is crude oil formed from? A) Remains of shale gas trapped under the sea bed. B) Remains of gases trapped in the ozone layer. C) Remains of plants and animals that died millions of years ago. D) Remains of animal faeces from millions of years ago. Show Answer Correct Answer: C) Remains of plants and animals that died millions of years ago. 27. What is the definition of saturated? A) No single bonds. B) Contains a double bond. C) No single bonds, all double bonds. D) No double bonds, all single bonds. Show Answer Correct Answer: D) No double bonds, all single bonds. 28. This functional group has C=O at the end of an organic chain: A) Aldehyde. B) Ketone. C) Carboxylic acid. D) Both aldehyde and carboxylic acid. Show Answer Correct Answer: D) Both aldehyde and carboxylic acid. 29. What is another example of an organic carbon compound? A) Sodium chloride (NaCl). B) Water (H$_{2}$O). C) Methane (CH$_{4}$). D) Oxygen (O$_{2}$). Show Answer Correct Answer: C) Methane (CH$_{4}$). 30. Which of the following is NOT FOUND in organic compounds? A) Helium. B) Nitrogen. C) Hydrogen. D) Carbon. Show Answer Correct Answer: A) Helium. 31. A colourless solution reacts with zinc carbonate to produce a gas that turns lime-water cloudy. The substance in the solution probably has the molecular formula of A) C$_{2}$H$_{5}$OH. B) CH$_{3}$COOC$_{7}$H$_{15}$. C) C$_{2}$H$_{5}$OC$_{2}$H$_{5}$. D) CH$_{3}$COOH. Show Answer Correct Answer: D) CH$_{3}$COOH. 32. A lipid is a macromolecule that is used to ..... A) Give cells/systems energy. B) Give cells/systems long term energy storage. C) Help cells with chemical processes. D) None of the above. Show Answer Correct Answer: B) Give cells/systems long term energy storage. 33. Which of the following statements concerning propene is/are correct?(1) It dissolves in water to form propan-1-ol.(2) It can undergo addition polymerization.(3) It can be prepared by the catalytic cracking of a saturated hydrocarbon. A) Only. B) And (3) only. C) And (3) only. D) Only. Show Answer Correct Answer: B) And (3) only. 34. All of the carbon in existence is continually recycled in the carbon cycle A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 35. An example of this organic compound or macromolecule would be enzymes or antibodies: A) Lipid. B) Nucleic Acid. C) Carbohydrate. D) Protein. Show Answer Correct Answer: D) Protein. 36. What product can be made with palm oil? A) Plasric. B) Butter. C) Cheese. D) Soap. Show Answer Correct Answer: D) Soap. 37. Which of the following reactions apply to alkenes only? A) Combustion. B) Substitution. C) Addition. D) None of the above. Show Answer Correct Answer: C) Addition. 38. Which of the following is true about the compound C$_{6}$H$_{12}$O$_{6}$? A) It is unstable compound. B) It does not contain carbon. C) It is an inorganic compound. D) It is an organic compound. Show Answer Correct Answer: D) It is an organic compound. 39. If there is a fire in a forest, there will be less ..... in the environment? A) Nitrogen. B) Oxygen. C) All the above. D) None of the above. Show Answer Correct Answer: B) Oxygen. 40. All carbohydrates are composed of carbon, hydrogen, and oxygen. In what ratio are they in?(expressed as carbon:hydrogen:oxygen) A) 1:2:1. B) 1:1:1. C) 2:1:1. D) 1:1:2. Show Answer Correct Answer: A) 1:2:1. 41. What is the general formula of an alkane A) CnH2n+2. B) CnHn. C) 2n+2. D) CnH2n. Show Answer Correct Answer: A) CnH2n+2. 42. Ethanoic acid + methanol $\rightarrow$ Q + H$_{2}$OQ is A) CH$_{3}$COOC$_{2}$H$_{5}$. B) C$_{2}$H$_{5}$COOCH$_{3}$. C) C$_{3}$H$_{7}$COOH. D) CH$_{3}$COOCH$_{3}$. Show Answer Correct Answer: D) CH$_{3}$COOCH$_{3}$. 43. ..... is the storage form of excess glucose in animals. A) Glycogen. B) Cellulose. C) Sugar. D) Starch. Show Answer Correct Answer: A) Glycogen. 44. A macromolecule is a ..... A) Very Small Molecule. B) Small Molecule. C) Medium Molecule. D) Large Molecule. Show Answer Correct Answer: D) Large Molecule. 45. Why are organic carbon compounds important in everyday life? A) They form the basis of essential biological molecules for life. B) They are not important in everyday life. C) They are important because they are highly toxic to living beings. D) They have no function in daily life. Show Answer Correct Answer: A) They form the basis of essential biological molecules for life. 46. What best describes the structure of DNA? A) Ring. B) Helix. C) Double helix. D) Chain. Show Answer Correct Answer: C) Double helix. 47. Which among the following is a protein? A) Collagen. B) Thymine. C) Nucleotide. D) Glycogen. Show Answer Correct Answer: A) Collagen. 48. DNA and RNA are examples of which type of macromolecule? A) Nucleic Acids. B) Carbohydrates. C) Lipids. D) Proteins. Show Answer Correct Answer: A) Nucleic Acids. 49. Combustion of ethanol will produce A) Carbon and oxygen. B) Carbon dioxide and oxygen. C) Carbon dioxide and water. D) Carbon dioxide and hydrogen. Show Answer Correct Answer: C) Carbon dioxide and water. 50. What element is present in all organic compounds? A) Hydrogen. B) Carbon. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: B) Carbon. 51. Addition reactions are undergone by ..... A) Saturated hydrocarbons (alkanes). B) Only alkenes. C) Only alkynes. D) Both alkenes and alkynes. Show Answer Correct Answer: D) Both alkenes and alkynes. 52. Which of the following is NOT one of the 4 main types of macromolecules? A) Lipids. B) Carbohydrates. C) Salts. D) Proteins. Show Answer Correct Answer: C) Salts. 53. Carbon can form more compounds than any other element. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 54. The following equation represents a reaction for the industrial preparation of ethanol from compound X using catalyst P. What is X and catalyst P?X + H$_{2}$O $\rightarrow$ CH$_{3}$CH$_{2}$OH A) X = C$_{3}$H$_{6}$ ; P = Sulphuric acid. B) X = C$_{2}$H$_{4}$ ; P = Phosphoric acid. C) X=C$_{2}$H$_{4}$ ; P = Platinum. D) X = C$_{2}$H$_{6}$ ; P = Nickel. Show Answer Correct Answer: B) X = C$_{2}$H$_{4}$ ; P = Phosphoric acid. 55. Which biomolecule helps you fight off infection? A) Nucleic Acids. B) Carbohydrates. C) Proteins. D) Lipids. Show Answer Correct Answer: C) Proteins. 56. How many shared electrons are in a single bond between carbon atoms? A) 8. B) 6. C) 2. D) 4. Show Answer Correct Answer: C) 2. 57. A single bond classifies it as an alkane, which is saturated carbon. A) Ethane. B) Ethyne. C) Ethine. D) Ethene. Show Answer Correct Answer: A) Ethane. 58. Which of the following is an organic compound? A) NaOH. B) NaCl. C) CH$_{4}$. D) LiBr. Show Answer Correct Answer: C) CH$_{4}$. 59. What is the purpose of cracking in hydrocarbon processing? A) To convert hydrocarbons into gases. B) To remove impurities from crude oil. C) To break long-chain hydrocarbons into smaller ones. D) To increase the boiling point of hydrocarbons. Show Answer Correct Answer: C) To break long-chain hydrocarbons into smaller ones. 60. The 4 major groups of macromolecules found in living things are A) Carbohydrates, glucose, lipids, & proteins. B) Glucose, lipids, nucleic acids, & proteins. C) Carbohydrates, lipids, nucleic acids, & proteins. D) None of the above. Show Answer Correct Answer: C) Carbohydrates, lipids, nucleic acids, & proteins. ← 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 3Class 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