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Chemistry Hydrocarbons multiple choice questions set 2

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1. What is the color of bromine?




2. Each Hydrogen atom in an alkane forms




3. The reaction of halogens (Group-VII) and alkane (saturated hydrocarbons) in the presence of sunlight is an example of




4. Considering the process of reduction of alkyl halides which of the following is liberated when Zn reacts with aqueous acid?




5. What is the state of Trichloromethane at room temperature?




6. Methane (CH4) is used as




7. What is the physical state of bromine when reacted with an alkene?




8. Tetrahydroxy ethane loses two water molecules to form




9. Tetra halides undergo dehalogenation forming an alkyne on treatment with




10. Which of the following is true about alkanes?




11. Which of the following has carcinogenic effects at high concentrations?




12. Which color of KMnO4 solution is discharged when an alkene is treated with a dilute alkaline aqueous solution of KMnO4?




13. Which of the following has two halogen atoms on adjacent carbon atoms?




14. Trichloromethane is also called




15. Loss of hydrogen halide from alkyl halide gives




16. The reaction of any substance with air is called




17. Vicinal dihalide eliminates two molecules of hydrogen halides from adjacent carbon atoms on treatment with :




18. Which of the following is not true about alkynes?




19. in alkenes the two carbon atoms forming double bond are joined to how many atoms?




20. What is the physical state of alkanes containing five to seventeen carbon atoms?




21. First three members of alkynes are




22. Which of the following is not true about alkenes?




23. Which of the following is used in oxy-acetylene torches for welding and cutting metals?




24. The molecular formula of methane is




25. What is formed when methane is reacted with chlorine in direct sunlight?




26. Which of the following is true about alkynes?




27. Which of the following helps to initiate the ripening of fruits and vegetables?




28. Test for the presence of an alkene is called




29. The red color of tomatoes is due to alkene named




30. Which of the following is not true about alkanes?




31. Each carbon atom in an alkane forms




32. The reaction in which -OH group is removed from one carbon and H atom from the adjacent carbon atom is called




33. Alkanes (saturated hydrocarbons) have a density




34. the odor of Ethyne is




35. C5-C15 members of alkenes are




36. What is the correct trend in the reactivity of halogen with an alkane?




37. Alkanes that contain 5 to 17 atoms are in




38. How does bromine react?




39. When do alkanes readily react with halogens?




40. Which alkanes are widely used as fuel?




41. What is the state of dichloromethane at room temperature?




42. When bromine water is added to an alkene the product is




43. Ethylene glycol is used as an




44. How much ethene is required for the ripening of 1 kg of tomatoes?




45. What is the state of tetrachloromethane at room temperature?




46. Which of the following processes involves the addition of hydrogen molecule across carbon-carbon multiple-bond?




47. After the first three members the next eight members of alkynes are




48. What is the term used for the reaction of an alkane and a halogen?




49. Which of the following is used as a simple test for the presence of unsaturation?




50. How does fluorine react?




51. Higher members of alkenes are




52. Addition of hydrogen to ethene forms




53. The odor of Ethyne is




54. What causes the red color of tomatoes?




55. Acetylene is another name of




56. Ethene propene and butene are




57. What is the state of methyl chloride at room temperature?




58. Methane is reacted with chlorine in




59. When methane and chlorine are reacted in direct sunlight the reaction is




60.