This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 4 Carbon And Its Compounds – Quiz 37 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 37 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In carbohydrates, what is the ratio of Carbon to hydrogen to oxygen. A) 1:2:1. B) 1:3. C) 1:4:2. D) None of the above. Show Answer Correct Answer: A) 1:2:1. 2. What is the significance of the carbon atom in organic compounds? A) Carbon can form four covalent bonds, allowing for a diverse range of structures and functions in organic molecules. B) Carbon is the most abundant element in the universe, making it essential for life. C) Carbon atoms are always found in a linear arrangement in organic compounds. D) Carbon can only form single bonds, limiting the complexity of organic molecules. Show Answer Correct Answer: A) Carbon can form four covalent bonds, allowing for a diverse range of structures and functions in organic molecules. 3. Butane A) Alkane. B) Alkene. C) Alkyne. D) None of the above. Show Answer Correct Answer: A) Alkane. 4. Ethene gas reacts with water vapour to produce ethanol through hydration reaction. What is the suitable condition for the reaction? A) Temperature:300$^{o}$C, Pressure:1 atm, Catalyst:Iron. B) Temperature:450$^{o}$C, Pressure:200 atm, Catalyst:Iron. C) Temperature:180$^{o}$C, Pressure:1 atm, Catalyst:Nickel. D) Temperature:300$^{o}$C, Pressure:60 atm, Catalyst:Phosphoric acid. Show Answer Correct Answer: D) Temperature:300$^{o}$C, Pressure:60 atm, Catalyst:Phosphoric acid. 5. A single unit or piece that can be bonded to form a larger molecule is called a A) Polymer. B) Biomolecule. C) Monomer. D) Dimer. Show Answer Correct Answer: C) Monomer. 6. They are aliphatic hydrocarbons that contain only single bonds. A) Alkanes. B) Alkenes. C) Alkynes. D) None of the above. Show Answer Correct Answer: A) Alkanes. 7. Which of the following process do not happen in the carbon cycle? A) Photosynthesis. B) Distillation. C) Decomposition. D) Combustion. Show Answer Correct Answer: B) Distillation. 8. Name the group that has a single bond A) Alkenes. B) Alcohols. C) Alkanes. D) Ethers. Show Answer Correct Answer: C) Alkanes. 9. What is the general formula of an alkene? A) C$_{n}$H$_{2n-2}$. B) C$_{n}$H$_{2n+2}$. C) C$_{n}$H$_{2n}$. D) C$_{n}$H$_{n}$. Show Answer Correct Answer: C) C$_{n}$H$_{2n}$. 10. What is the monomer of a carbohydrate called? A) Monosaccharide. B) Amino Acid. C) Glycerol. D) Nucleotide. Show Answer Correct Answer: A) Monosaccharide. 11. Which of the following compounds will be formed when butanone is reduced? A) Butan-1-ol. B) Butan-2-ol. C) Butanal. D) Butanoic acid. Show Answer Correct Answer: B) Butan-2-ol. 12. The windscreen of a car is made of A) Glass. B) Perspex. C) PVC. D) Polypropene. Show Answer Correct Answer: B) Perspex. 13. Balance the equation:C3H8 + O2 $\rightarrow$ CO2 + H2O. A) C3H8 + 3 O2 $\rightarrow$ 2 CO2 + 3 H2O. B) C3H8 + 4 O2 $\rightarrow$ 2 CO2 + 5 H2O. C) C3H8 + 6 O2 $\rightarrow$ 4 CO2 + 2 H2O. D) C3H8 + 5 O2 $\rightarrow$ 3 CO2 + 4 H2O. Show Answer Correct Answer: D) C3H8 + 5 O2 $\rightarrow$ 3 CO2 + 4 H2O. 14. Identify the functional group in alcohols. A) Carboxyl group (-COOH). B) Carbonyl group (C=O). C) Hydroxyl group (-OH). D) Amino group (-NH2). Show Answer Correct Answer: C) Hydroxyl group (-OH). 15. Fractional distillation separates crude oil based on the different ..... of the molecules in the mixture A) Melting point. B) Boiling point. C) Freezing point. D) Chemical reactivity. Show Answer Correct Answer: B) Boiling point. 16. Which of the following is true about organic compounds? A) Is usually metallic. B) Exists in all living things. C) Combines with carbon to release heat. D) Does not originate from living things. Show Answer Correct Answer: B) Exists in all living things. 17. Which of the following is the functional group of an alkene? A) C-C. B) C=C. C) -OH. D) -COOH. Show Answer Correct Answer: B) C=C. 18. What is the molecular formula of butane? A) C2H6. B) C3H8. C) C4H10. D) C5H12. Show Answer Correct Answer: C) C4H10. 19. Which of the following statements are usually correct for carbon compounds? These-(i) are good conductors of electricity(ii) are poor conductors of electricity(iii) have strong forces of attraction between their molecules(iv) do not have strong forces of attraction between their molecules. A) (i) & (iii). B) (ii) & (iii). C) (ii) & (iv). D) (i) & (iv). Show Answer Correct Answer: C) (ii) & (iv). 20. A compound is a substance which contains ..... A) Only one type of atom. B) Only two types of atom. C) Two or more chemicals which can be easily separated. D) Two or more elements chemically joined together. Show Answer Correct Answer: D) Two or more elements chemically joined together. 21. Alkenes burn with more ..... flame compared with alkanes of the same number of carbon atoms because the percentage of carbon by mass in alkenes is ..... A) Blue, higher. B) Sooty, higher. C) Sooty, lower. D) Blue, lower. Show Answer Correct Answer: B) Sooty, higher. 22. A polysaccharide: A) Starch. B) Glucose. C) Enzyme. D) Protein. Show Answer Correct Answer: A) Starch. 23. The product, polyethene, is a A) Gas. B) Liquid. C) Solid. D) Solution. Show Answer Correct Answer: C) Solid. 24. TRUE or FALSE? 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. 25. A molecule of CO$_{2}$ (carbon dioxide) has- A) Only single bonds. B) Only double bonds. C) Only triple bonds. D) 1 single & 1 double bond. Show Answer Correct Answer: B) Only double bonds. ← 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