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 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When two atoms share electrons, a chemical bond is formed. This type of bond is called: A) Ionic bond. B) Polyatomic bond. C) Crystal bond. D) Covalent bond. Show Answer Correct Answer: D) Covalent bond. 2. What is the general formula for carboxylic acid?Apakah formula am asid karboksilik? A) C$_{n}$H$_{2n+1}$OH. B) C$_{n}$H$_{2n+1}$COOH. C) C$_{n}$H$_{2n+2}$. D) C$_{n}$H$_{2n+1}$COOC$_{m}$H$_{2m+1}$. Show Answer Correct Answer: B) C$_{n}$H$_{2n+1}$COOH. 3. A plant starch that gives many plants most of their structure: A) Cellulose. B) Sucrose. C) Glycogen. D) Glucose. Show Answer Correct Answer: A) Cellulose. 4. Which of the following contains the genetic code for protein synthesis? A) Nucleic acid. B) Lipid. C) Carbohydrate. D) Protein. Show Answer Correct Answer: A) Nucleic acid. 5. This is the name of the building block or monomer for Proteins: A) Amino Acid. B) Fatty Acid & Glycerol. C) Monosaccharide. D) Nucleotide. Show Answer Correct Answer: A) Amino Acid. 6. Monomers of lipids are ..... A) Neucleotides. B) Simple sugars. C) Fatty acids. D) Amino acids. Show Answer Correct Answer: C) Fatty acids. 7. What is a key characteristic of carbon that allows it to form diverse molecules? A) High atomic mass. B) High density. C) Four valence electrons. D) Low melting point. Show Answer Correct Answer: C) Four valence electrons. 8. What is the difference between aldehydes and ketones? A) Aldehydes are always more reactive than ketones due to their structure. B) Aldehydes have a carbonyl group within the chain; ketones have it at the end. C) Aldehydes have a carbonyl group at the end of the chain; ketones have it within the chain. D) Ketones can only be formed from three-carbon chains, while aldehydes can be formed from any length. Show Answer Correct Answer: C) Aldehydes have a carbonyl group at the end of the chain; ketones have it within the chain. 9. An example of this organic compound or macromolecule would be fat, oil, or waxes: A) Lipid. B) Protein. C) Nucleic Acid. D) Carbohydrate. Show Answer Correct Answer: A) Lipid. 10. What is the difference between a monomer and a polymer? A) Polymers are single units, monomers are many polymers linked. B) Monomers are single units, polymers are many monomers linked. C) All the above. D) None of the above. Show Answer Correct Answer: B) Monomers are single units, polymers are many monomers linked. 11. Propene gas reacts with hydrogen to produce propane gas at 180$^{o}$C by using catalyst X. What is X? A) Nickel. B) Iron. C) Vanadium(V) oxide. D) Manganese(IV) oxide. Show Answer Correct Answer: A) Nickel. 12. Unsaturated hydrocarbons contain at least one double or triple bond. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 13. Which of the following compounds is not organic? A) C$_{2}$H$_{2}$. B) CCl$_{}$$_{4}$. C) CO. D) CH$_{4}$. Show Answer Correct Answer: C) CO. 14. When liquid X reacts with propanoic acid and a few drops of concentrated sulphuric acid for a few hours under reflux, a sweet smelling liquid is formed. What is liquid X? A) Ethyl propanoate. B) Propanol. C) Hexane. D) Ethanoic acid. Show Answer Correct Answer: B) Propanol. 15. What type of organic compound contains other elements besides hydrogen and carbon? A) Alkane. B) Saturated hydrocarbon. C) Non-hydrocarbon. D) Hydrocarbon. Show Answer Correct Answer: C) Non-hydrocarbon. 16. Which of the following has the highest boiling point? A) Heptane. B) Pentane. C) Nonane. D) None of the above. Show Answer Correct Answer: C) Nonane. 17. How many covalent bonds are present in Propene C$_{3}$H$_{6}$? A) 8. B) 10. C) 9. D) 7. Show Answer Correct Answer: B) 10. 18. Which metal is commonly used as the catalyst for turning vegetable oils into fats? A) Copper metal. B) Silver metal. C) Gold metal. D) Nickel metal. Show Answer Correct Answer: D) Nickel metal. 19. An animal starch; your liver uses it to store sugar: A) Glycogen. B) Sucrose. C) Glucose. D) Cellulose. Show Answer Correct Answer: A) Glycogen. 20. Which of the step of oil processing from the oil palm fruit press out the oil? A) Sterilisation. B) Threshing. C) Extraction. D) Digestion. Show Answer Correct Answer: C) Extraction. 21. What makes one amino acid different from another? A) R group. B) Carboxyl group. C) Hydrogen atom. D) Amino group. Show Answer Correct Answer: A) R group. 22. This is the name for the building block or monomer for Lipids: A) Amino Acid. B) Nucleotide. C) Fatty acid & Glycerol. D) Monosaccharide. Show Answer Correct Answer: C) Fatty acid & Glycerol. 23. Petroleum is able to be separated into fractions because the petroleum fractions have different ..... A) Boiling point. B) Melting point. C) Uses. D) Elements content. Show Answer Correct Answer: A) Boiling point. 24. What is the environmental impact of carbon dioxide emissions? A) Carbon dioxide emissions have no effect on the environment. B) Carbon dioxide emissions reduce global temperatures. C) Carbon dioxide emissions significantly contribute to climate change and environmental degradation. D) Carbon dioxide is beneficial for plant growth only. Show Answer Correct Answer: C) Carbon dioxide emissions significantly contribute to climate change and environmental degradation. 25. What is the monomer and polymer of all carbohydrates? A) Monomer:monosaccharide, polymer:polysaccharide. B) Monomer:polysaccharide, polymer:monosaccharide. C) Monomer:fatty acid, polymer:glucose. D) Monomer:CH$_{2}$O, polymer:carbohydrate. Show Answer Correct Answer: A) Monomer:monosaccharide, polymer:polysaccharide. 26. Endergonic reactions ..... energy.Exergonic reactions ..... energy. A) Absorbrelease. B) Releaseabsorb. C) All the above. D) None of the above. Show Answer Correct Answer: A) Absorbrelease. 27. Which are TRUE about the use of ethyl alcohol? I. medicine III. disinfectant II. fuel IV. Fertilizer A) I and II only. B) II and III only. C) III and IV only. D) I and IV only. Show Answer Correct Answer: B) II and III only. 28. Which of the following factors is LEAST likely to affect the activity of an enzyme A) PH level. B) Ambient temperature. C) Type of substrate it binds to. D) All three equally affect the activity of an enzyme. Show Answer Correct Answer: C) Type of substrate it binds to. 29. Which of the following is not true about characteristics of alcohol? A) It is a good fuel as it does not produce black soot. B) It dissolves in water. C) It is blue in colour. D) It is flammable. Show Answer Correct Answer: C) It is blue in colour. 30. If the plant population decreased, the amount of carbon would ..... A) Stay the same. B) Increase. C) Decrease. D) None of the above. Show Answer Correct Answer: B) Increase. 31. Ethanol reacts with sodium to produce A) Sodium ethoxide. B) Ethanoic acid. C) Sodium ethanoate. D) Ethene. Show Answer Correct Answer: A) Sodium ethoxide. 32. General formula of Alkane is A) C$_{n}$H$_{2n+1}$COOH. B) C$_{n}$H$_{2n+2}$. C) C$_{n}$H$_{2n}$. D) C$_{n}$H$_{2n+1}$OH. Show Answer Correct Answer: B) C$_{n}$H$_{2n+2}$. 33. Which of the following is an example of saturated hydrocarbon? A) Pentene. B) Ethene. C) Propane. D) Butene. Show Answer Correct Answer: C) Propane. 34. What are the products of complete combustion of hydrocarbons? A) Oxygen (O2) and nitrogen (N2). B) Methane (CH4) and ammonia (NH3). C) Carbon monoxide (CO) and hydrogen (H2). D) Carbon dioxide (CO2) and water (H2O). Show Answer Correct Answer: D) Carbon dioxide (CO2) and water (H2O). 35. What is present in proteins but not in carbohydrates and lipids? A) Oxygen. B) Nitrogen. C) Carbon. D) Phosphorus. Show Answer Correct Answer: B) Nitrogen. 36. Organic molecules that always contain carbon, oxygen and hydrogen, often in a 1:2:1 ratio A) Monosaccaride. B) Functional groups. C) Carbohydrates. D) Enyzme. Show Answer Correct Answer: C) Carbohydrates. 37. Which of these isn't a fraction produce through fractional distillation? A) Fuel oil. B) Naptha. C) Ethanol. D) Bitumen. Show Answer Correct Answer: C) Ethanol. 38. Oils and fats are esters. They are formed when fatty acids and glycerol reacts with each other. The process is known as? A) Esterification. B) Coagulation. C) Neutralisation. D) Combustion. Show Answer Correct Answer: A) Esterification. 39. List two physical properties of alkanes. A) Low melting points compared to other hydrocarbons. B) 1. Boiling points increase with molecular weight; 2. Insoluble in water. C) High solubility in water. D) Decreasing density with molecular weight. Show Answer Correct Answer: B) 1. Boiling points increase with molecular weight; 2. Insoluble in water. 40. The tough exoskeleton of arthropods like lobster and crabs are made of chitin. It provides structure and rigidity in the animal. Chitin is an example of which macromolecule? A) Nucleic acids. B) Lipids. C) Proteins. D) Carbohydrates. Show Answer Correct Answer: D) Carbohydrates. 41. Which of the following is NOT a use of carbohydrates? A) Main source of energy. B) Hormone production. C) DNA synthesis. D) Structural purposes. Show Answer Correct Answer: B) Hormone production. 42. From which of the following substance pencil lead is formed? A) Wood. B) Charcoal. C) Graphite. D) Lead. Show Answer Correct Answer: C) Graphite. 43. A hydrocarbon is an organic that contains carbon, hydrogen, and oxygen. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 44. What type of compound is this C6H12O6 commonly known as table sugar? A) A crystal. B) Reactive. C) Organic. D) Inorganic. Show Answer Correct Answer: C) Organic. 45. Which of the following best describes the composition of a nucleotide? A) A pair of six-carbon rings attached to each other. B) A carbon atom joined to hydrogen and three functional groups. C) A chain of carbon atoms with a carboxyl group bonded to one end. D) A five-carbon sugar attached to a phosphate group and a nitrogenous base. Show Answer Correct Answer: D) A five-carbon sugar attached to a phosphate group and a nitrogenous base. 46. Enzymes affect the reactions in living cell by changing the? A) Speed of the reaction. B) Products. C) Outcome of the reaction. D) Temperature of the reaction. Show Answer Correct Answer: A) Speed of the reaction. 47. What is produced during the cracking process? A) Large hydrocarbons. B) Smaller hydrocarbons like petrol. C) Only gases. D) Only solid hydrocarbons. Show Answer Correct Answer: B) Smaller hydrocarbons like petrol. 48. What is the difference between fats and oils? A) Fats are solid, oil are liquids. B) Fats are esters, oils are carboxylic acid. C) Fats found in plants, oils found in animals. D) Fats have lower melting point than oil. Show Answer Correct Answer: A) Fats are solid, oil are liquids. 49. What is the primary structure of a protein? A) The three-dimensional shape of a protein formed by the folding of the polypeptide chain. B) The arrangement of multiple polypeptide chains in a protein complex. C) The first level of protein organization, defined by the unique linear sequence of amino acids in a polypeptide chain. D) The specific sequence of nucleotides in a DNA molecule. Show Answer Correct Answer: C) The first level of protein organization, defined by the unique linear sequence of amino acids in a polypeptide chain. 50. How many hydrogen atoms are in butane A) 6. B) 10. C) 4. D) 8. Show Answer Correct Answer: B) 10. 51. Which of the following will give a pleasant smell of ester when heated with ethanol and a small quantity of sulphuric acid? A) CH3CHO. B) CH3OH. C) CH3CH2OH. D) CH3COOH. Show Answer Correct Answer: D) CH3COOH. 52. Which of the following is NOT a source of hydrocarbons? A) Natural gas. B) Petroleum. C) Coal. D) Hot spring. Show Answer Correct Answer: D) Hot spring. 53. ..... can make 4 different bond with 4 different things A) Proteins. B) Starch. C) Water. D) Carbon. Show Answer Correct Answer: D) Carbon. 54. A hydrocarbon is a chemical compound consists of A) Carbon and oxygen only. B) Carbon and hydrogen only. C) Carbon, hydrogen and oxygen only. D) Carbon, hydrogen, oxygen and nitrogen only. Show Answer Correct Answer: B) Carbon and hydrogen only. 55. When does incomplete combustion occur? A) Depends. B) Lack of fuel. C) Lack of oxygen. D) Excess oxygen. Show Answer Correct Answer: C) Lack of oxygen. 56. Which monomer is the basic building block of a protein? A) Fatty acid. B) Monosaccharide. C) Nucleotide. D) Amino acid. Show Answer Correct Answer: D) Amino acid. 57. What is the IUPAC name of C$_{6}$H$_{14}$? A) Methane. B) Hexane. C) Propane. D) Heptane. Show Answer Correct Answer: B) Hexane. 58. Many plants have waxy coatings on some surfaces. This coating reduces water loss because it is not water-permeable. This waxy coating is which of the following types of organic molecule? A) Nucleic acid. B) Protein. C) Carbohydrate. D) Lipid. Show Answer Correct Answer: D) Lipid. 59. How many atoms can a Carbon atom potentially bind to? A) 4. B) 1. C) 2. D) 3. Show Answer Correct Answer: A) 4. 60. What is the importance of organic carbon compounds in the food industry? A) They contribute to the flavor and aroma of food. B) They have no importance in the food industry. C) They cause foodborne illnesses. D) They generate artificial coloring in food. Show Answer Correct Answer: A) They contribute to the flavor and aroma of food. ← 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 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books