This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Chemistry Part Ii > Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Main part of turpentine from Jeffrey pine A) Decane. B) Pentane. C) Heptane. D) Octane. Show Answer Correct Answer: C) Heptane. 2. Alkanes are also known as: A) Alcohols. B) Unsaturated hydrocarbons. C) Aromatic hydrocarbons. D) Saturated hydrocarbons. Show Answer Correct Answer: D) Saturated hydrocarbons. 3. Which of the following alkene is in gaseous state at room temperature? A) Butene. B) Butane. C) Pentene. D) Pentyne. Show Answer Correct Answer: A) Butene. 4. How do different types of hydrocarbons differ from each other? A) By their color. B) By the type of bond and structure. C) By their taste. D) By their melting point only. Show Answer Correct Answer: B) By the type of bond and structure. 5. A hydrocarbon in which all of the bonds are single bonds is said to be ..... A) Saturated. B) Unsaturated. C) All the above. D) None of the above. Show Answer Correct Answer: A) Saturated. 6. What is the name of the reaction used to make polymers? A) Precipitation. B) Polymerization. C) Cracking. D) Polygonization. Show Answer Correct Answer: B) Polymerization. 7. What is the function of UV during free radical substitution reaction of alkane? A) No function. B) To supply energy for heterolytic cleavage. C) To make the observation visible and clear. D) To supply energy for homolytic cleavage. Show Answer Correct Answer: D) To supply energy for homolytic cleavage. 8. How many electrons are in a double bond? A) 2. B) 1. C) 4. D) 3. Show Answer Correct Answer: C) 4. 9. How to recognize the parent chain of an alkane? A) It's the chain with the most branches. B) It's the straight chain in the molecule. C) It's the longest carbon chain. D) None of the above. Show Answer Correct Answer: C) It's the longest carbon chain. 10. All alkanes are soluble in water A) True. B) False. C) Depends on the number of carbons and branching. D) Depends of the temperature. Show Answer Correct Answer: B) False. 11. Dalam animasi Naruto Shippuden, Hanzo si Salamander memberikan julukan "3 sanin legendaris" . Siapakah mereka yang mendapakan julukan sanin legendaris tersebut? A) Jiraya-Orochimaru-Tsunade. B) Kakashi-Obito-Rin. C) Nagato-Yahiko-Konan. D) Naruto-sasuke-sakura. Show Answer Correct Answer: A) Jiraya-Orochimaru-Tsunade. 12. An organic molecule that contains only single bonds is called A) Homologous. B) Saturated. C) Satisfied. D) Unsaturated. Show Answer Correct Answer: B) Saturated. 13. What is the color of sodium benzoate C6H6COONa? A) White. B) Yellow. C) Black. D) Green. Show Answer Correct Answer: A) White. 14. What is the chemical compounds produced after reaction between C6H5COONa with NaOH? A) H2O. B) C6H6. C) C6H5OH. D) Na. Show Answer Correct Answer: B) C6H6. 15. Which of the following is not one the use of acetylene gas? A) Miner's torch. B) Ripening fruits. C) Preparing acetic acid. D) Cutting metals. Show Answer Correct Answer: C) Preparing acetic acid. 16. Which of the following is a common application of butene? A) Fuel for rocket engines. B) Manufacturing of tires. C) Production of detergents. D) Extraction of natural gas. Show Answer Correct Answer: A) Fuel for rocket engines. 17. Select the formula for the following name:Octene A) C$_{8}$H$_{15}$OH. B) C$_{8}$H$_{18}$. C) C$_{8}$H$_{14}$. D) C$_{8}$H$_{16}$. Show Answer Correct Answer: D) C$_{8}$H$_{16}$. 18. The name of the functional group of an aldehyde is ..... A) Carbonyl group. B) Amine group. C) Hydroxyl group. D) Ketone group. Show Answer Correct Answer: A) Carbonyl group. 19. A on reaction with sodium in presence of dry ether gives 2, 3 dimethyl butane. what is A? A) Isopropyl chloride. B) T-butyl chloride. C) 2, 3 dimethyl 1-chloro butane. D) Propanoic acid. Show Answer Correct Answer: A) Isopropyl chloride. 20. As the number of carbons increases in the boiling point generally ..... A) Varies. B) Increase. C) Stay the same. D) Decrease. Show Answer Correct Answer: B) Increase. 21. Which of the following is a toxic gas released when hydrocarbons undergo incomplete combustion? A) Carbon dioxde. B) Oxygen. C) Carbon monoxide. D) None of the above. Show Answer Correct Answer: C) Carbon monoxide. 22. What type of hydrocarbon is characterized by the presence of a double bond? A) Alkene. B) Alkyne. C) Aromatic. D) Alkane. Show Answer Correct Answer: A) Alkene. 23. Who discovered benzene's stable structure? A) Priestley. B) Faraday. C) Kekule. D) Lomonosov. Show Answer Correct Answer: C) Kekule. 24. The general formulas for alkanes, alkenes and alkynes are: A) Alkane:C$_{n}$H$_{2n+2 }$alkene:C$_{n}$H$_{2n }$alkyne:C$_{n}$H$_{2n-2}$. B) Alkane:C$_{n}$H$_{2n-2 }$alkene:C$_{n}$H$_{2n }$alkyne:C$_{n}$H$_{2n+2}$. C) Alkane:C$_{n}$H$_{2n}$alkene:C$_{n}$H$_{2n+2}$alkyne:C$_{n}$H$_{n+4}$. D) Alkane:C$_{n}$H$_{2n+2 }$alkene:C$_{n}$H$_{2n }$alkyne:C$_{n}$H$_{n-4}$. Show Answer Correct Answer: A) Alkane:C$_{n}$H$_{2n+2 }$alkene:C$_{n}$H$_{2n }$alkyne:C$_{n}$H$_{2n-2}$. 25. A Double Bond ( = ) means a total of how many electrons? A) 1 electron. B) 2 electron. C) 4 electrons. D) 3 electron. Show Answer Correct Answer: C) 4 electrons. 26. Why are hydrocarbons effective as fuel sources? A) They release oxygen when burned. B) They produce large amounts of water vapor. C) They contain high-energy carbon-carbon bonds. D) They have high boiling points. Show Answer Correct Answer: C) They contain high-energy carbon-carbon bonds. 27. What is the process in which synthetic rubber treated with sulfur at high temperature to overcome the weakness of polymer? A) Condensation. B) Vulcanization. C) Modification. D) Polymerization. Show Answer Correct Answer: B) Vulcanization. 28. Substances with benzene-like rings are called ..... A) Circle compounds. B) Aromatic compounds. C) Aldehydes. D) None of the above. Show Answer Correct Answer: B) Aromatic compounds. 29. How do you test for an alkene? A) React it with litmus paper. B) React it with oxygen. C) PH test. D) React it with bromine water. Show Answer Correct Answer: D) React it with bromine water. 30. How many bonds can each carbon atom make? A) 4. B) 3. C) 2. D) 1. Show Answer Correct Answer: A) 4. 31. ALKANE, ALKENE or ALKYNE?Hexyne A) Alkane. B) Alkene. C) Alkyne. D) None of the above. Show Answer Correct Answer: C) Alkyne. 32. Combustion reactions are A) Always exothermic. B) Always endothermic. C) Some times exothermic and some times endothermic. D) No heat involved. Show Answer Correct Answer: A) Always exothermic. 33. The names of all alkenes end with the suffix: A) -ane. B) -hex. C) -ene. D) None of the above. Show Answer Correct Answer: C) -ene. 34. Which type of hydrocarbon contains at least one carbon-carbon triple bond? A) Alkenes. B) Aromatic hydrocarbons. C) Alkynes. D) Alkanes. Show Answer Correct Answer: C) Alkynes. 35. What is meant by a saturated hydrocarbon? A) Contains a double covalent bond between the carbon atoms. B) Contains at least one carbon to carbon double bond. C) Contains only single covalent bonds between the carbon atoms. D) Contains mostly single covalent bonds between the carbon atoms. Show Answer Correct Answer: C) Contains only single covalent bonds between the carbon atoms. 36. In which of the following reactions is oxygen use up? A) Addition. B) Substitution. C) Combustion. D) Elimination. Show Answer Correct Answer: C) Combustion. 37. It is an important part of gasoline fuel for cars, trucks, buses, and the like. A) Benzene. B) Ethanol. C) Methanol. D) Octane. Show Answer Correct Answer: D) Octane. 38. An alkene is a hydrocarbon with A) All single bonds betwee carbon atoms. B) One triple bond between 2 carbon atoms. C) At least one double bond between 2 carbon atoms. D) None of the above. Show Answer Correct Answer: C) At least one double bond between 2 carbon atoms. 39. What alkene has the chemical formula C5H10? A) PENTENE. B) CYCLOPENTANE. C) PENTANE. D) PENTANOL. Show Answer Correct Answer: A) PENTENE. 40. Butane is an alkane with ..... carbon atoms A) 5. B) 4. C) 3. D) 2. Show Answer Correct Answer: B) 4. 41. N-propyl bromide on treating with alcoholic KOH produces A) Propane. B) Propyne. C) Propanol. D) Propene. Show Answer Correct Answer: D) Propene. 42. Give the reagents and conditions needed to form propanol from propene A) H$_{2}$SO$_{4}$/Heat. B) H$_{3}$PO$_{4}$/Steam. C) NaOH (aq). D) None of the above. Show Answer Correct Answer: B) H$_{3}$PO$_{4}$/Steam. 43. 2-heptyne has a ..... bond. A) Single. B) Double. C) Triple. D) None of the above. Show Answer Correct Answer: C) Triple. 44. In which conformation does butane have the highest energy? A) Gauche. B) Staggered. C) Eclipsed. D) Anti. Show Answer Correct Answer: C) Eclipsed. 45. When naming organic compounds: A) The substituent groups are listed in numerical order. B) The substituent groups are listed in alphabetical order. C) The parent chain must be in a straight line in the diagram. D) Only the longest chain is included. Show Answer Correct Answer: B) The substituent groups are listed in alphabetical order. 46. The empirical formula of an organic compound is CH2O. The molecular formula that is suitable for that organic compound is ..... A) C$_{4}$H$_{5}$O$_{2}$. B) C$_{2}$H$_{6}$O$_{2}$. C) C$_{2}$H$_{6}$O. D) C$_{5}$H$_{10}$O$_{5}$. Show Answer Correct Answer: D) C$_{5}$H$_{10}$O$_{5}$. 47. An atom or group of atoms that take place of hydrogen on a parent hydrocarbon molecule: A) Replacing agent. B) Substituent. C) Subsequent. D) Group. Show Answer Correct Answer: B) Substituent. 48. When benzene is a substituent it is called A) Carboxyl group. B) Akyl group. C) Arene group. D) Phenyl group. Show Answer Correct Answer: D) Phenyl group. 49. What do you call the process of drilling and injecting fluid into a ground at a high pressure in order to break or fracture the shale rocks to release natural gas inside? A) Drilling. B) Sedimentation. C) Perforation. D) Fracking. Show Answer Correct Answer: D) Fracking. 50. What is the IUPAC name of dimethylacetylene? A) But-2-yne. B) But-1-yne. C) Propyne. D) Ethyne. Show Answer Correct Answer: A) But-2-yne. 51. Why do alkane not dissolve in water? A) They are less dense than water. B) They have low melting points. C) They are non-polar compounds. D) They are chemically less reactive. Show Answer Correct Answer: C) They are non-polar compounds. 52. The gas evolved on heating CH$_{3}$MgBr in methanol is(1) methane(2) ethane(3) propane(4) HBr A) 4. B) 3. C) 2. D) 1. Show Answer Correct Answer: D) 1. 53. How are hydrocarbons obtained? A) By fractional separation of petroleum. B) Produced by modified algae. C) Via chemical synthesis. D) Via petroleum esterification. Show Answer Correct Answer: A) By fractional separation of petroleum. 54. H$_{3}$C-CH$_{2}$-CH$_{2}$-CH$_{2}$-CH(CH$_{3}$)$_{2}$contains ..... secondary carbon atoms. A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: C) 3. 55. When naming hydrocarbons, which segment of the name do we start with? A) The root. B) The suffix. C) The prefix. D) Depends on the compound. Show Answer Correct Answer: A) The root. 56. To balance ten oxygen atoms in a combustion equation, how many O2 molecules are needed? A) Five. B) Two. C) Three. D) Ten. Show Answer Correct Answer: A) Five. 57. What is wrong with the name 2, 4-methylhexane A) Inappropriate use of commas. B) A prefix is missing. C) Inappropriate use of dashes. D) A space is missing. Show Answer Correct Answer: B) A prefix is missing. 58. Hydrocarbons that contain only single bonds are alkanes. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 59. The most well-known ring structure that possesses double bonds is ..... A) Benzene. B) Hexane. C) Methane. D) None of the above. Show Answer Correct Answer: A) Benzene. 60. Cycloalkanes are saturated hydrocarbon, also known as alicyclic (aliphatic cyclic). A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. ← PreviousNext →Related QuizzesScience QuizzesClass 11 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 7Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 8Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books