This quiz works best with JavaScript enabled. Home > Class 10 > 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 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The boiling points of alkane molecules increase as their molecular sizes increase. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 2. What are hydrocarbons? A) Hydrocarbons are inorganic compounds that contain oxygen. B) Hydrocarbons are only found in fossil fuels. C) Hydrocarbons are organic compounds made up of hydrogen and carbon. D) Hydrocarbons are compounds made up of nitrogen and sulfur. Show Answer Correct Answer: C) Hydrocarbons are organic compounds made up of hydrogen and carbon. 3. What are some properties of organic carbon compounds in everyday life? A) Chemical instability, low reactivity, inability to form complex molecules. B) Formation of covalent bonds, ability to form long chains, diversity of structures and functions. C) Formation of ionic bonds, ability to form crystalline structures, high density. D) Electrical conductivity, solubility in water, metallic coloration. Show Answer Correct Answer: B) Formation of covalent bonds, ability to form long chains, diversity of structures and functions. 4. Which element is NOT found in a carbohydrate? A) C. B) H. C) N. D) O. Show Answer Correct Answer: C) N. 5. What is the functional group present in carboxylic acids? A) Carboxyl group. B) Aldehyde group. C) Amino group. D) Hydroxyl group. Show Answer Correct Answer: A) Carboxyl group. 6. Which of the following is the general formula for an alkane? A) C$_{m}$H$_{2m+1}$COOC$_{n}$H$_{2n+1}$. B) C$_{n}$H$_{2n+1}$OH. C) C$_{n}$H$_{2n+2}$. D) C$_{n}$H$_{2n}$. Show Answer Correct Answer: C) C$_{n}$H$_{2n+2}$. 7. Which is used as a cutting tool and in jewelry? A) Graphite. B) Diamond. C) Fullerene. D) Amorphous carbon. Show Answer Correct Answer: B) Diamond. 8. Which has the formula C$_{60}$? A) Graphite. B) Diamond. C) Fullerene. D) None of these. Show Answer Correct Answer: C) Fullerene. 9. Diamond is an insulator because of A) It is tough. B) It has no free electrons to conduct electric current. C) It is not soluble in water. D) Its structure is very consolidated. Show Answer Correct Answer: B) It has no free electrons to conduct electric current. 10. What are the 4 most abundant elements in living things? A) Hydrogen, oxygen, nitrogen, carbon. B) Hydrogen, helium, oxygen, carbon. C) Carbon, manganese, iron, hydrogen. D) None of the above. Show Answer Correct Answer: A) Hydrogen, oxygen, nitrogen, carbon. 11. Which of the following is not true about esters? A) Has fruity smell and pleasant fragrance. B) Simple esters are volatile. C) Animal fats and vegetable oils examples of esters. D) Soluble in water and insoluble in organic solvents. Show Answer Correct Answer: D) Soluble in water and insoluble in organic solvents. 12. Alcohol is organic compound that contains A) Carbon. B) Hydrogen. C) Carbon and hydrogen. D) Carbon, hydrogen and oxygen. Show Answer Correct Answer: D) Carbon, hydrogen and oxygen. 13. Which of the following is unsaturated hydrocarbon? A) Ethene. B) Propane. C) Ethanol. D) Glycerol. Show Answer Correct Answer: A) Ethene. 14. 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. 15. 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. 16. Which of the following is used to oxidise alcohols? A) Acidified NaOH(aq). B) Acidified H$_{2}$SO$_{4}$(aq). C) Acidified Al$_{2}$O$_{3}$(s). D) Acidifed K$_{2}$Cr$_{2}$O$_{7}$. Show Answer Correct Answer: D) Acidifed K$_{2}$Cr$_{2}$O$_{7}$. 17. The firSt member of the alkyne homologous series is A) Propyne. B) Ethyne. C) Methane. D) Ethene. Show Answer Correct Answer: B) Ethyne. 18. What is a reactant? A) Chemical that enter INTO a chemical reaction. B) Chemicals that EXIT a chemical. C) Energy needed to. D) Chemical that speeds up a chemical reaction. Show Answer Correct Answer: A) Chemical that enter INTO a chemical reaction. 19. 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. 20. 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. 21. What is a monosaccharide? A) A complex carbohydrate made of multiple sugar molecules. B) The simplest form of carbohydrates, consisting of a single sugar molecule. C) A type of protein that aids in digestion. 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. 22. 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. 23. 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) Carbohydrates. B) Phospholipids. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: A) Carbohydrates. 24. 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. 25. Which macromolecule acts as a catalyst in biochemical reactions? A) Carbohydrates. B) Lipids. C) Nucleic acids. D) Proteins. Show Answer Correct Answer: D) Proteins. ← PreviousNext →Related 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 9Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 10Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books