This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Chemistry Part Ii > Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 13 Hydrocarbons Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which one of the following classes of compounds is obtained by polymerization of acetylene?(1) Poly-ene(2) Poly-yne(3) Poly-amide(4) Poly-ester A) 4. B) 1. C) 3. D) 2. Show Answer Correct Answer: D) 2. 2. An alcohol is called "iso" if it has what? A) A methyl group attached to the first carbon of a chain. B) A methyl group attached to the second carbon of a chain. C) Contains two OH groups. D) Has a symmetrical structure. Show Answer Correct Answer: B) A methyl group attached to the second carbon of a chain. 3. CH$_{4}$+O$_{2}$ ..... $^{Mo2O3}$ ..... $_{heat}$ ..... what is the product A) Ethane. B) Methanoic acid. C) Methanal. D) Methanol. Show Answer Correct Answer: C) Methanal. 4. Which hydrocarbon has a double bond? A) Propane. B) Butane. C) Cyclohexane. D) Ethene. Show Answer Correct Answer: D) Ethene. 5. Which of the following alkane is in gaseous state at room temperature? A) Decane. B) Hexane. C) Butane. D) Pentane. Show Answer Correct Answer: C) Butane. 6. True or false:The name of the hydrocarbon can tell you how many carbons it contains A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 7. What gas turns limewater cloudy? A) Oxygen. B) Hydrogen. C) Carbon dioxide. D) None of the above. Show Answer Correct Answer: C) Carbon dioxide. 8. If an alkane has 32 hydrogen atoms, how many carbon atoms does it have? A) 66. B) 64. C) 15. D) 16. Show Answer Correct Answer: C) 15. 9. The dihedral angle in the staggered conformation of C2H6 is A) 90. B) 0. C) 60. D) 120. Show Answer Correct Answer: C) 60. 10. Cyclohexane is the simplest stype of cyclic hydrocarbon and contains only A) Triple bonds. B) Double bonds. C) Single bonds. D) None of the above. Show Answer Correct Answer: C) Single bonds. 11. What is the main natural source of hydrocarbons? A) Crude Oil. B) Gasoline. C) Sedimentary Rocks. D) Polar Ice. Show Answer Correct Answer: A) Crude Oil. 12. How many water molecules are needed to balance the hydrogen atoms in the combustion of a hydrocarbon with eight hydrogen atoms? A) Two. B) Six. C) Four. D) Eight. Show Answer Correct Answer: C) Four. 13. What name is given to reactions, like combustion reactions, which release energy? A) Endothermic. B) Exothermic. C) All the above. D) None of the above. Show Answer Correct Answer: B) Exothermic. 14. Saturated Hydrocarbons contains ..... A) Carbon & Hydrogen. B) Hydrogen Only. C) Carbon Only. D) Other elements than carbon. Show Answer Correct Answer: A) Carbon & Hydrogen. 15. What type of hydrocarbon has the general formula CnH2n? A) Aromatic. B) Alkane. C) Alkene. D) Alkyne. Show Answer Correct Answer: C) Alkene. 16. How do you balance the hydrogen atoms in the combustion of methane? A) Add 2 in front of O2. B) Add 2 in front of CO2. C) Add 2 in front of H2O. D) Add 2 in front of CH4. Show Answer Correct Answer: C) Add 2 in front of H2O. 17. Hydrocarbon refinement A) Separates the oil compoonents by their solubility in water. B) Separates the oil components by electrical conductivity. C) Separates the oil components by their boiling point. D) Separates the oil components by their polarity. Show Answer Correct Answer: C) Separates the oil components by their boiling point. 18. When wood burns in the presences of oxygen, in what form is energy released? A) Heat and light. B) Hydrogen. C) Water vapor. D) More oxygen. Show Answer Correct Answer: A) Heat and light. 19. Amines are organic compounds that can be considered to be derivatives of ammonia, NH$_{3}$. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 20. ..... is the simplest alkyne. A) Ethyne. B) Ethene. C) Methene. D) Methyne. Show Answer Correct Answer: A) Ethyne. 21. Hydrocarbons are organic compound with elements A) Hydrogen. B) Oxygen. C) Carbon. D) Both hydrogen and carbon. Show Answer Correct Answer: D) Both hydrogen and carbon. 22. Alkyl groups are formed by removing 1 proton. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. What is the name for a group of atoms that attach to the carbon skeleton of an organic molecule and give it certain properties A) Carbon group. B) Element group. C) Periodic group. D) Functional group. Show Answer Correct Answer: D) Functional group. 24. C$_{10}$H$_{22}$ is called: A) Decane. B) Nonane. C) Decene. D) Decyne. Show Answer Correct Answer: A) Decane. 25. ALKANE, ALKENE or ALKYNE?Undecane A) Alkane. B) Alkene. C) Alkyne. D) None of the above. Show Answer Correct Answer: A) Alkane. 26. The name "2-pentene" shows that: A) There are 2 carbon atoms. B) The double bond starts at carbon 2. C) The molecule is branched. D) It is an alkane. Show Answer Correct Answer: B) The double bond starts at carbon 2. 27. What do we use limewater to test for? A) Carbon dioxide. B) Water. C) Smoke. D) Heat. Show Answer Correct Answer: A) Carbon dioxide. 28. What are the products of complete combustion? A) CO + H2O. B) H2O. C) CO. D) SO2 + H2O. E) CO2 + H2O. Show Answer Correct Answer: E) CO2 + H2O. 29. ..... is the alkene with 4 carbons in its chain. A) Quadrene. B) Propene. C) Tetrene. D) Butene. Show Answer Correct Answer: D) Butene. 30. Is the last step in naming alkenes and alkyne. A) Writing the name of the main chain. B) Writing the location of the double/triple bond and the name of the main chain. C) Writing the location of the branches and the name of the main chain. D) None of the above. Show Answer Correct Answer: B) Writing the location of the double/triple bond and the name of the main chain. 31. Fossil Fuels formed over long periods of time after particles in water settled to the sea floor and formed marine mud. What kinds of particles needed to be present in the marine mud in order for fossil fuels to form. A) Mostly sand and a few small bits of wood. B) Mostly decaying organisms. C) Mostly lava and a few sedimentary rocks. D) Mostly metal minerals. Show Answer Correct Answer: B) Mostly decaying organisms. 32. The general formula for alcohols is R-OH. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 33. What is a major application of ethyne? A) Fuel for welding torches. B) Production of fertilizers. C) Extraction of natural gas. D) Manufacturing of plastics. Show Answer Correct Answer: A) Fuel for welding torches. 34. When they burn, aromatic hydrocarbons give off a ..... sooty flame. A) Orange. B) Yellow. C) Green. D) Red. Show Answer Correct Answer: B) Yellow. 35. ALKANE, ALKENE or ALKYNE?Propyne A) Alkane. B) Alkene. C) Alkyne. D) None of the above. Show Answer Correct Answer: C) Alkyne. 36. Nonane has how many hydrogen atoms? A) 22. B) 18. C) 20. D) 9. Show Answer Correct Answer: C) 20. 37. Is the alkene with 3 carbons in its chain. A) Ethene. B) Decene. C) Propene. D) Methene. Show Answer Correct Answer: C) Propene. 38. Which type of hydrocarbon contains at least one triple bond? A) Alkynes. B) Alkenes. C) Alkanes. D) Aromatics. Show Answer Correct Answer: A) Alkynes. 39. Which of the following undergoes addition reactions A) Alkanes. B) Alkanes and alkenes. C) Alkanes and alkynes. D) Alkenes. Show Answer Correct Answer: D) Alkenes. 40. If an alkene reacts with a halogen, it is known as what type of reaction? A) Combustion. B) Hydrogenation. C) Polymerisation. D) Addition. Show Answer Correct Answer: D) Addition. 41. Organic or Inorganic:Potassium bicarbonate $K_2CO_3$ A) Organic. B) Inorganic. C) All the above. D) None of the above. Show Answer Correct Answer: B) Inorganic. 42. An alkyne having 4 carbons will have ..... no. of Hydrogen atoms. A) 6. B) 8. C) 10. D) 5. Show Answer Correct Answer: A) 6. 43. The product(s) of complete combustion of any hydrocarbon is/are ..... A) Water. B) Water and carbon monoxide. C) Carbon dioxide. D) Carbon monoxide. Show Answer Correct Answer: B) Water and carbon monoxide. 44. Which of the halogen reacts fastest during halogenation of alkane A) Br$_{2}$. B) L$_{2}$. C) F$_{2}$. D) Cl$_{2}$. Show Answer Correct Answer: C) F$_{2}$. 45. It is the formula where the symbols of atoms are listed in order as they appear in the molecule's structure with bond dashes omitted or limited? A) Molecular Formula. B) Structural Formula. C) Chemical Formula. D) Condensed Formula. Show Answer Correct Answer: D) Condensed Formula. 46. Which of the following is NOT aromatic hydrocarbon? A) Decene. B) Benzene. C) Toluene. D) Naphthalene. Show Answer Correct Answer: A) Decene. 47. What product is formed when you react hydrogen with pent-3-ene? A) Pentane. B) Pent-1-ene. C) Hex-3-ene. D) Cyclopentane. Show Answer Correct Answer: A) Pentane. 48. Compounds containing one or more benzene rings are called: A) Aromatic compounds. B) Alicyclic compounds. C) Alkanes. D) Aliphatic compounds. Show Answer Correct Answer: A) Aromatic compounds. 49. Alkanes have various uses related to their molecule size and state. Which of the following is an incorrect statement? A) Longer chain molecules are used as lubricants and fuel oils. B) Ethene is used as a feedstock for polymers and other industrially produced chemicals. C) Hexane is the main component of petrol. D) Methane is the main component of natural gas. Show Answer Correct Answer: C) Hexane is the main component of petrol. 50. Which of the following best describes hydrocarbons? A) Compounds containing hydrogen and carbon only. B) Compounds containing hydrogen, carbon, and oxygen. C) Compounds containing only carbon. D) Compounds containing only hydrogen. Show Answer Correct Answer: A) Compounds containing hydrogen and carbon only. 51. Produces water and carbon monoxide A) Incomplete combustion. B) Complete combustion. C) All the above. D) None of the above. Show Answer Correct Answer: A) Incomplete combustion. 52. What name is given to the first group of cyclic hydrocarbons? A) Cyclocarbons. B) Cycloalkenes. C) Cyclicalkanes. D) Cycloalkanes. Show Answer Correct Answer: D) Cycloalkanes. 53. Which of the following has the highest boiling points A) Alkanes. B) Alkynes. C) Alkenes. D) Alkanols. Show Answer Correct Answer: D) Alkanols. 54. All compounds containing carbon are organic compounds A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 55. How does the use of polyethylene in exfoliating scrubs relate to its properties? A) Polyethylene is included in scrubs to add fragrance and color. B) The abrasive properties of polyethylene help to gently exfoliate the skin, making it suitable for use in scrubs. C) Polyethylene is used in scrubs to provide a cooling sensation on the skin. D) Polyethylene is avoided in scrubs because it causes skin irritation. Show Answer Correct Answer: B) The abrasive properties of polyethylene help to gently exfoliate the skin, making it suitable for use in scrubs. 56. Which of the following would have the highest volatility? A) C$_{4}$H$_{8}$. B) C$_{5}$H$_{12}$. C) C$_{22}$H$_{44}$. D) C$_{3}$H$_{8}$. Show Answer Correct Answer: D) C$_{3}$H$_{8}$. 57. Is combustion a reversible reaction? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 58. Fossil fuels can be described as non-renewable, true or false? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 59. Is the name of triple bonded, unsaturated hydrocarbons. A) Alkenes. B) Alkynes. C) Tanins. D) Alkanes. Show Answer Correct Answer: B) Alkynes. 60. Used to make ethyl alcohol, acetic acid, and other chemicals; refrigerant A) Propane. B) Ethane. C) Butane. D) Methane. Show Answer Correct Answer: B) Ethane. ← 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 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books