This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 4 Carbon And Its Compounds – Quiz 35 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 35 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Give the name of this compound ..... C$_{3}$H$_{6}$? A) Propene. B) Butane. C) Butene. D) Propane. Show Answer Correct Answer: A) Propene. 2. How many valence electrons does each carbon atom have? A) 2. B) 3. C) 4. D) 1. Show Answer Correct Answer: C) 4. 3. The basic unit of life is a ..... A) Atom. B) Molecule. C) Organelle. D) Cell. Show Answer Correct Answer: D) Cell. 4. Which element is the main component of all organic molecules? A) Potassium. B) Nitrogen. C) Sodium. D) Carbon. Show Answer Correct Answer: D) Carbon. 5. ..... are different forms of a chemical element that can exist in the same physical state. A) Isomers. B) Allotropes. C) Catenation. D) Amorphous. Show Answer Correct Answer: B) Allotropes. 6. How many carbon atoms in propane (C$_{3}$H$_{8}$)? A) 8. B) 7. C) 6. D) 3. E) 2. Show Answer Correct Answer: D) 3. 7. Hydrocarbon compounds that have one double covalent bond between 2 carbon atoms in the chain or ring A) Alkane. B) Alkene. C) Cycloalkane. D) Cycloalkene. Show Answer Correct Answer: B) Alkene. 8. If an alkane has 20 carbon atoms, how many hydrogen atoms will it have? A) 20. B) 22. C) 40. D) 42. Show Answer Correct Answer: D) 42. 9. Maria Paula wants to preserve a fish for her project in Biology class. What kind of compound should she use to preserve the animal? A) Acetone. B) Methyl Alcohol. C) Formaldehyde. D) Acetic acid. Show Answer Correct Answer: C) Formaldehyde. 10. Ethane, with the molecular formula C2H6, has A) 6 covalent bonds. B) 7 covalent bonds. C) 8 covalent bonds. D) 9 covalent bonds. Show Answer Correct Answer: B) 7 covalent bonds. 11. Which of the following is NOT one of the four main types of macromolecules? A) Carbohydrates. B) Vitamins. C) Lipids. D) Nucleic Acids. Show Answer Correct Answer: B) Vitamins. 12. DNA belongs to which class of macromolecules? A) Proteins. B) Nucleic acids. C) Carbohydrates. D) Lipids. Show Answer Correct Answer: B) Nucleic acids. 13. What is activation energy? A) Energy that is used to hold bonds together. B) Energy that EXITS a chemical reaction. C) Energy needed to get a reaction started. D) Energy used to keep electrons swirling around the nucleus. Show Answer Correct Answer: C) Energy needed to get a reaction started. 14. Steroids and hormones: A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic acids. Show Answer Correct Answer: B) Lipids. 15. Which of the following is a hydrocarbon? A) Alkene. B) Alcohol. C) Carboxylic acid. D) Ester. Show Answer Correct Answer: A) Alkene. 16. What should you eat after a work out if you want to build muscle? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: C) Proteins. 17. Which of the following are NOT the physical properties of Alkenes? A) Cannot conduct electricity. B) Low density. C) Soluble in water. D) Neutral compounds. Show Answer Correct Answer: C) Soluble in water. 18. Which of the following removes carbon from the atmosphere? A) Combustion. B) Respiration. C) Photosynthesis. D) Death. Show Answer Correct Answer: C) Photosynthesis. 19. What is the function of enzymes? A) To speed up chemical reactions in the body. B) To slow down chemical reactions in the body. C) To provide energy for cellular processes. D) To transport nutrients across cell membranes. Show Answer Correct Answer: A) To speed up chemical reactions in the body. 20. Cellulose is a complex carbohydrate that makes up the cell walls of plants. Which of the following elements are main components of cellulose? A) Calcium and chlorine. B) Carbon and hydrogen. C) Potassium and chlorine. D) Sodium and hydrogen. Show Answer Correct Answer: B) Carbon and hydrogen. 21. This organic compound is known as the building blocks of our body & has many enzymes that each have a special function: A) Nucleic Acids. B) Carbohydrates. C) Proteins. D) Lipids. Show Answer Correct Answer: C) Proteins. 22. The bond length of c-c bond in benzene is A) 1.45 A. B) 1.38A. C) 1.33A. D) 1.23A. Show Answer Correct Answer: B) 1.38A. 23. What are the four main types of biomolecules? A) Carbohydrates, Proteins, Lipids, Nucleic Acids. B) Vitamins, Minerals, Carbohydrates, Proteins. C) Fats, Sugars, Enzymes, Hormones. D) Carbohydrates, Proteins, Nucleic Acids, Water. Show Answer Correct Answer: A) Carbohydrates, Proteins, Lipids, Nucleic Acids. 24. What liquid detects the presence of an alkene? A) Alkene water. B) Bromine water. C) Water. D) Limewater. Show Answer Correct Answer: B) Bromine water. 25. Enzymes affect the reations in living cells by changing the A) Speed of. B) Products. C) Temperature of hte. D) Outcome of the reaction. Show Answer Correct Answer: A) Speed of. ← 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 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 9Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books