This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 19 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... is the name of hydrocarbons that contain one or more double C=C bonds. A) Alkanes. B) Alkenes. C) Alkynes. D) None of the above. Show Answer Correct Answer: B) Alkenes. 2. Dimethylpentane has how many carbon atoms present? A) 4. B) 5. C) 6. D) 7. Show Answer Correct Answer: D) 7. 3. What does Carbon tetravalence mean? A) Carbon has valence electrons. B) Carbon always forms 4 bonds with its 4 valence electrons. C) Carbon can have up to 4 bonds. D) None of the above. Show Answer Correct Answer: B) Carbon always forms 4 bonds with its 4 valence electrons. 4. What is the first step in balancing a combustion equation? A) Balancing hydrogen atoms. B) Balancing water molecules. C) Balancing carbon atoms. D) Balancing oxygen atoms. Show Answer Correct Answer: C) Balancing carbon atoms. 5. Which of the following alkanes has the name of 2-bromo-1-iodo butane? A) CH$_{2}$Br CH$_{}$I CH$_{2}$ CH$_{3}$. B) CH$_{3}$ CH$_{}$Br CH$_{2}$ CH$_{2}$I. C) CH$_{2}$I CH$_{}$Br CH$_{2}$ CH$_{3}$. D) CH$_{3}$ CH$_{}$Br CH$_{}$I CH$_{2}$. Show Answer Correct Answer: C) CH$_{2}$I CH$_{}$Br CH$_{2}$ CH$_{3}$. 6. Is benzene is toxic or non-toxic? A) Toxic. B) Non-toxic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Toxic. 7. Why do we burn a fuel? A) I don't know. B) To release energy. C) To lose energy. D) To produce carbon dioxide. Show Answer Correct Answer: B) To release energy. 8. What is the simplest hydrocarbon? A) Ethane. B) Propane. C) Methane. D) Butane. Show Answer Correct Answer: C) Methane. 9. Butane is an alkane with A) 3 carbon atoms. B) 4 carbon atoms. C) 5 carbon atoms. D) None of the above. Show Answer Correct Answer: B) 4 carbon atoms. 10. ALKANE, ALKENE or ALKYNE?Decyne A) Alkane. B) Alkene. C) Alkyne. D) None of the above. Show Answer Correct Answer: C) Alkyne. 11. Isomers are molecules that have the ..... molecular formula, have ..... structures and ..... functions. A) Different, different, different. B) Same, different, different. C) Same, same, same. D) Different, same, different. Show Answer Correct Answer: B) Same, different, different. 12. Which of the following has highest boiling point A) N-pentane. B) Isopentane. C) Neopentane. D) All have same. Show Answer Correct Answer: A) N-pentane. 13. The colour of bromine water in ethene is ..... A) Colourless. B) Pink. C) White. D) Brown. Show Answer Correct Answer: A) Colourless. 14. As the number of carbon atoms in a formula ..... , the number of possible isomers ..... A) Increases, decreases. B) Increases, increases. C) Decreases, increases. D) None of the above. Show Answer Correct Answer: B) Increases, increases. 15. If a hydrocarbon had 3 triple bonds, what would the suffix be? A) "-yne". B) "-diyne". C) "-triyne". D) "-triene". Show Answer Correct Answer: C) "-triyne". 16. What is the chemical formula of an alkane that has 1 carbon atom? A) C1H2. B) C1H3. C) C1H4. D) C1H6. Show Answer Correct Answer: C) C1H4. 17. The overlapping of orbitals in benzene is of the type A) Sp-sp. B) Sp2-sp2. C) Sp3-sp3. D) None of the above. Show Answer Correct Answer: B) Sp2-sp2. 18. A group of compounds forms ..... if there is a constant increment of change in molecular structure from one compound in the series to the next. A) A heterologous series. B) A decrement series. C) A homologous series. D) None of the above. Show Answer Correct Answer: C) A homologous series. 19. What are the types of combustion? A) Complete & incomplete. B) Incomplete & inexact. C) Impossible & complete. D) Computer & incompete. Show Answer Correct Answer: A) Complete & incomplete. 20. Octane A) C8H18. B) C7H16. C) C9H20. D) C8H16. Show Answer Correct Answer: A) C8H18. 21. If there was an ethyl and a methyl branch in a hydrocarbon, which one would come first in the name? A) Methyl. B) The root. C) The suffix. D) Ethyl. Show Answer Correct Answer: D) Ethyl. 22. Which of the following is a balanced equation for the combustion of heptane (a hydrocarbon)? A) C$_{7}$H$_{16}$ + O$_{2}$ $\rightarrow$ 7CO$_{2}$ + 8H$_{2}$O. B) C$_{7}$H$_{16}$ + 11O$_{2}$ $\rightarrow$ CO$_{2}$ + H$_{2}$O. C) C$_{7}$H$_{16}$ + O$_{2 }$==> CO$_{2}$ + H$_{2}$O. D) C$_{7}$H$_{16}$ + 11O$_{2}$ $\rightarrow$ 7CO$_{2}$ + 8H$_{2}$O. Show Answer Correct Answer: D) C$_{7}$H$_{16}$ + 11O$_{2}$ $\rightarrow$ 7CO$_{2}$ + 8H$_{2}$O. 23. What is the general formula for hydrocarbons with single bonds? A) CnH2n. B) CnH2n+2. C) CnH2n-2. D) CnHn+2. Show Answer Correct Answer: B) CnH2n+2. 24. The word equation for complete combustion is:fuel + oxygen $\rightarrow$ water + ..... A) Carbon dioxide. B) Limewater. C) Carbon monoxide. D) Carbon. Show Answer Correct Answer: A) Carbon dioxide. 25. What is the name of C$_{5}$H$_{12}$? A) Pentane. B) Hexane. C) Butane. D) Heptane. Show Answer Correct Answer: A) Pentane. ← 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