This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons – Quiz 22 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 22 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The boiling and melting points are ..... than those corresponding to aliphatic hydrocarbons.Are compounds that are ..... in water. A) Higher, insoluble. B) Lower, insoluble. C) Higher, soluble. D) Lower, soluble. Show Answer Correct Answer: A) Higher, insoluble. 2. What are the hydrogens in a hydrocarbon bonded to? A) Other hydrogens. B) A central carbon skeleton. C) All the above. D) None of the above. Show Answer Correct Answer: B) A central carbon skeleton. 3. By using Saytzeff's rule, the most stable alkene is A) (C$_{2}$H$_{5}$)$_{2}$C=CH$_{2}$. B) CH$_{2=}$CHC$_{4}$H$_{9}$. C) (CH$_{3}$)$_{2}$C=C(CH$_{3}$)$_{2}$. D) C$_{2}$H$_{5}$CH=CHC$_{2}$H$_{5}$. Show Answer Correct Answer: C) (CH$_{3}$)$_{2}$C=C(CH$_{3}$)$_{2}$. 4. Hydrocarbons are compounds that contain these elements: A) Carbon and Nitrogen. B) Carbon and Hydrogen. C) Carbon, and Oxygen. D) Carbon, Oxygen, and Hydrogen. Show Answer Correct Answer: B) Carbon and Hydrogen. 5. What percentage of the global energy consumption comes from fossil fuels? A) 25%. B) 50%. C) 84%. D) 95%. Show Answer Correct Answer: C) 84%. 6. Peat A) A soft substance made of decayed plant fibers. B) A type of mineral found in rocks. C) A synthetic material used in construction. D) A liquid fuel derived from fossilized plants. Show Answer Correct Answer: A) A soft substance made of decayed plant fibers. 7. Which of the following is the on of the preparation method of acetylene gas? A) From calcium carbide. B) Dehydration of alcholes. C) Cracking reaction. D) Hydrogenation. Show Answer Correct Answer: A) From calcium carbide. 8. Is the name of single bonded, saturated hydrocarbons. A) Alkanes. B) Alkenes. C) Alkynes. D) Tanins. Show Answer Correct Answer: A) Alkanes. 9. It is written in a way the subscript of the element symbol depicts the number of atoms present in the compound? A) Chemical Formula. B) Condensed Formula. C) Molecular Formula. D) Structural Formula. Show Answer Correct Answer: C) Molecular Formula. 10. Which type of hydrocarbon contains at least one carbon-carbon double bond? A) Alkanes. B) Alkenes. C) Alkynes. D) Aromatic hydrocarbons. Show Answer Correct Answer: B) Alkenes. 11. Hydrocarbons with double or triple bonds are said to be A) Saturated. B) Unsaturated. C) Supersaturated. D) None of the above. Show Answer Correct Answer: B) Unsaturated. 12. What is the name of the third member of alkenes? A) Propane. B) Propene. C) Propyne. D) Butene. Show Answer Correct Answer: D) Butene. 13. Is the simplest of alkenes. A) Ethene. B) Propene. C) Buthene. D) Pentene. Show Answer Correct Answer: A) Ethene. 14. Compounds in a homologous series will have the same A) General formula. B) Atoms. C) Functional group. D) All of the above. Show Answer Correct Answer: D) All of the above. 15. Which of the following is NOT a source of hydrocarbon? A) Candle. B) Gasoline. C) LPG. D) Glass. Show Answer Correct Answer: D) Glass. 16. True or false-burning is a chemical reaction A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. Which of the following is correct about structural isomers? A) They have different molecular formulas. B) They must have any double or triple bonds in the same position. C) They can be either positional or chain isomers. D) They must have the same length main chain. Show Answer Correct Answer: C) They can be either positional or chain isomers. 18. Octene A) Alkane. B) Alkene. C) Alkyne. D) None of the above. Show Answer Correct Answer: B) Alkene. 19. What is the ending for hydrocarbons with only C-C single bonds? A) -yne. B) -ene. C) -ane. D) -one. Show Answer Correct Answer: C) -ane. 20. What is isomerism in hydrocarbons? A) Isomerism in hydrocarbons is the existence of compounds with the same molecular formula but different structures or arrangements. B) Isomerism in hydrocarbons means having different molecular formulas for the same compound. C) Isomerism is the process of breaking down hydrocarbons into simpler compounds. D) Isomerism refers to the ability of hydrocarbons to form multiple bonds. Show Answer Correct Answer: A) Isomerism in hydrocarbons is the existence of compounds with the same molecular formula but different structures or arrangements. 21. In the hydroboration-oxidation reaction of propene with diborane, H$_{2}$O$_{2}$ and NaOH, the organic compound formed is:(1) CH$_{3}$CH$_{2}$CH$_{2}$OH( 2) (CH$_{3}$)$_{3}$COH(3) CH$_{3}$CHOHCH$_{3}$(4) CH$_{3}$CH$_{2}$OH A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: A) 1. 22. Crude oil and what are natural resources formed from the ancient remains of microscopic animals and plants? A) Natural gas. B) Sand. C) Rock. D) Fossils. Show Answer Correct Answer: A) Natural gas. 23. What is the name of a branch group that has 4 C atoms? A) Propyl. B) Methyl. C) Ethyl. D) Butyl. Show Answer Correct Answer: D) Butyl. 24. Which is the general formula of cycloalkane? A) C$_{n}$H$_{2n}$. B) C$_{n}$H$_{2n+2}$. C) C$_{n}$H$_{2n+1}$OH. D) C$_{n}$H$_{2n}$. Show Answer Correct Answer: A) C$_{n}$H$_{2n}$. 25. The representation by which lines depict two-electron bonds between atoms. A) Molecular Formula. B) Chemical Formula. C) Structural Formula. D) Condensed Fornula. Show Answer Correct Answer: C) Structural Formula. ← PreviousNext →Related QuizzesClass 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 1Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 2Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 3Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 4Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 5Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 6Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 7Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 8Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 9Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books