This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes Quiz 10 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The position of-Br in the compound CH$_{3}$CH=CH(Br)(CH$_{3}$)$_{2}$ can be classified as ..... A) Allyl. B) Aryl. C) Vinyl. D) Secondary. Show Answer Correct Answer: A) Allyl. 2. Name one industrial application of haloalkanes. A) Raw materials for plastics. B) Solvents in industrial applications. C) Fuels for combustion engines. D) Refrigerants in cooling systems. Show Answer Correct Answer: B) Solvents in industrial applications. 3. The synthesis of alkyl fluoride is best accomplished by A) Finkelstein reaction. B) Swartz reaction. C) Free radical fluorination. D) Sandmeyers reaction. Show Answer Correct Answer: B) Swartz reaction. 4. Bromination of methane in presence of sunlight is A) Nucleophilic substitution. B) Free radical substitution. C) Electrophilic substitution. D) Nucleophilic addition. Show Answer Correct Answer: B) Free radical substitution. 5. What factors influence the reactivity of haloalkanes? A) The molecular weight of the solvent. B) The color of the haloalkane. C) The temperature of the reaction. D) The reactivity of haloalkanes is influenced by the halogen atom, the type of carbon atom, steric hindrance, and the solvent. Show Answer Correct Answer: D) The reactivity of haloalkanes is influenced by the halogen atom, the type of carbon atom, steric hindrance, and the solvent. 6. Assertion:The stability of the carbocation intermediate affects the rate of electrophilic substitution in haloarenes. Reason:More stable carbocations lead to faster reactions. A) Less stable carbocations react faster than stable ones. B) Electrophilic substitution does not involve carbocations. C) Carbocation stability has no effect on reaction rate. D) True. Show Answer Correct Answer: D) True. 7. Name the compound:C6H5Br A) BenzeneBromide. B) Bromobenzene. C) PhenylBromide. D) Bromophenol. Show Answer Correct Answer: B) Bromobenzene. 8. What is the effect of resonance on the C-X bond in haloarenes? A) Increases polarity. B) Decreases polarity. C) No effect. D) Increases reactivity. Show Answer Correct Answer: B) Decreases polarity. 9. The alkyl halide is converted into an alcohol by A) Addition. B) Elimination. C) Substitution. D) Dehydrohalogenation. Show Answer Correct Answer: C) Substitution. 10. What is the IUPAC name for CH3CH2CH2CH2Cl? A) 1-chloropropane. B) 2-chlorobutane. C) 1-chlorobutane. D) 3-chlorobutane. Show Answer Correct Answer: C) 1-chlorobutane. 11. What is the role of halogenated compounds in ozone depletion? A) Halogenated compounds enhance ozone formation by releasing oxygen. B) Halogenated compounds have no effect on ozone levels. C) Halogenated compounds are used to repair ozone damage. D) Halogenated compounds contribute to ozone depletion by releasing chlorine that destroys ozone molecules. Show Answer Correct Answer: D) Halogenated compounds contribute to ozone depletion by releasing chlorine that destroys ozone molecules. 12. Which type of nucleophilic substitution reaction involves a carbocation intermediate? A) None. B) Both. C) S N 2 reactions. D) S N 1 reactions. Show Answer Correct Answer: D) S N 1 reactions. 13. The increasing order of nucleophilicity would be A) Cl-< Br$^{-}$ < I$^{-}$. B) I$^{-}$< Cl$^{-}$< Br$^{-}$. C) Br$^{-}$ < Cl$^{-}$ < F$^{-}$. D) I$^{-}$< Br$^{-}$ < Cl$^{-}$. Show Answer Correct Answer: A) Cl-< Br$^{-}$ < I$^{-}$. 14. Which of the following is not correctly matched with its IUPAC name? A) CHF$_{2}$CBrClF:1-bromo-1-chloro-1, 2, 2-trifluoroethane. B) O-BrC$_{6}$H$_{4}$CH(CH)$_{3}$CH$_{2}$CH$_{3}$:2-Bromo-1-methylpropylbenzane. C) (CCl$_{3}$)$_{3}$CCl:2-(Trichloromethyl)-1, 1, 1, 2, 3, 3, 3-heptachloropropane. D) CH$_{3}$C(p-ClC$_{6}$H$_{4}$)$_{2}$CH(Br)CH$_{3}$:2-Bromo-3, 3-bis(4-chlorophenyl)butane. Show Answer Correct Answer: B) O-BrC$_{6}$H$_{4}$CH(CH)$_{3}$CH$_{2}$CH$_{3}$:2-Bromo-1-methylpropylbenzane. 15. How does the presence of multiple halogen atoms affect the reactivity of haloalkanes? A) Multiple halogen atoms make haloalkanes less stable and more inert. B) The presence of halogen atoms has no effect on the reactivity of haloalkanes. C) Multiple halogen atoms increase the reactivity of haloalkanes by enhancing electrophilicity and stabilizing transition states. D) Multiple halogen atoms decrease the reactivity of haloalkanes by reducing electrophilicity. Show Answer Correct Answer: C) Multiple halogen atoms increase the reactivity of haloalkanes by enhancing electrophilicity and stabilizing transition states. 16. Which reagent will you use for the following reaction? CH$_{3}$CH$_{2}$CH$_{2}$CH$_{3}$ $\rightarrow$ CH$_{3}$CH$_{2}$CH$_{2}$CH$_{2}$Cl + CH$_{3}$CH$_{2}$CHClCH$_{3}$ A) Cl$_{2}$ /UV light. B) NaCl + H$_{2}$SO$_{4 }$. C) Cl$_{2}$ gas in dark. D) Cl$_{2 }$gas in the presence of iron in dark. Show Answer Correct Answer: A) Cl$_{2}$ /UV light. 17. Ethylene dichloride and ethylidene chloride are isomeric compounds. The false statement about these isomers is that they A) Contain the same percentage of chlorine. B) Are position isomers. C) React with alcoholic potash and give the same product. D) Are both hydrolysed to the same product. Show Answer Correct Answer: D) Are both hydrolysed to the same product. 18. What is the primary environmental concern associated with chlorofluorocarbons (CFCs)? A) Soil degradation. B) Global warming. C) Ozone layer depletion. D) Water pollution. Show Answer Correct Answer: C) Ozone layer depletion. 19. What is the main difference between S N 1 and S N 2 reactions in terms of mechanism? A) Neither involve a carbocation intermediate. B) Both involve a carbocation intermediate. C) S N 2 involves a carbocation intermediate, while S N 1 does not. D) S N 1 involves a carbocation intermediate, while S N 2 does not. Show Answer Correct Answer: D) S N 1 involves a carbocation intermediate, while S N 2 does not. 20. Name the compound:C6H5F A) Fluoromethane. B) Fluorobenzene. C) Hexafluorobenzene. D) Benzene fluoride. Show Answer Correct Answer: B) Fluorobenzene. 21. What is the environmental impact of using haloalkanes? A) Haloalkanes are used to enhance air quality. B) Haloalkanes have no significant impact on climate change. C) Haloalkanes have negative environmental impacts, including ozone depletion, bioaccumulation, and greenhouse gas emissions. D) Haloalkanes promote biodiversity and ecosystem health. Show Answer Correct Answer: C) Haloalkanes have negative environmental impacts, including ozone depletion, bioaccumulation, and greenhouse gas emissions. 22. Cyanide ion acts as an ambident nucleophile. From which end its acts as a stronger nucleophile in aqueous medium? A) It has same strength from both the ends. B) It acts as a stronger nucleophile from carbon end. C) It depends on the nature of the alkyl halide. D) It acts as a stronger nucleophile from nitrogen end. Show Answer Correct Answer: B) It acts as a stronger nucleophile from carbon end. 23. The geminal dihalide contains halogen bonded to A) Different carbon atom. B) Same carbon atom. C) Adjacent carbon atom. D) All the above. Show Answer Correct Answer: B) Same carbon atom. 24. What is the main characteristic of electrophilic aromatic substitution? A) The substitution of a hydrogen atom on an aromatic ring with an electrophile. B) The rearrangement of the aromatic ring structure. C) The addition of a nucleophile to an aromatic ring. D) The removal of an electrophile from an aromatic compound. Show Answer Correct Answer: A) The substitution of a hydrogen atom on an aromatic ring with an electrophile. 25. What is the primary reason for the higher boiling points of haloalkanes compared to alkanes? A) Haloalkanes exhibit dipole-dipole interactions due to the presence of halogens. B) Haloalkanes have higher molecular weights. C) Haloalkanes have stronger hydrogen bonds. D) Haloalkanes are more volatile than alkanes. Show Answer Correct Answer: A) Haloalkanes exhibit dipole-dipole interactions due to the presence of halogens. ← PreviousNext →Related QuizzesClass 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes Quiz 1Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes Quiz 2Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes Quiz 3Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes Quiz 4Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes Quiz 5Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes Quiz 6Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes Quiz 7Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes Quiz 8Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes Quiz 9Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books