This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which halogen has the highest electronegativity in haloalkanes and haloarenes? A) Iodine. B) Bromine. C) Chlorine. D) Fluorine. Show Answer Correct Answer: D) Fluorine. 2. The correct order of reactivity of halogens in alkyl halides for SN1 reaction is: A) R-F > R-Cl > R-Br > R-I. B) R-I > R-Br > R-Cl > R-F. C) R-Cl > R-Br > R-I > R-F. D) R-Br > R-Cl > R-I > R-F. Show Answer Correct Answer: B) R-I > R-Br > R-Cl > R-F. 3. In two separate experiments equal quantities of an alkyl halide C$_{4}$H$_{9}$Cl, were treated at the same temperature with equal volume of 0.1 molar and 0.2 molar solution of NaOH respectively. In both the experiments t$_{1/2}$ of the two reactio were the same. The most likely structure of halide is A) CH$_{3}$CH$_{2}$CH$_{2}$CH$_{2}$Cl. B) CH$_{3}$CH(Cl)CH$_{2}$CH$_{3}$. C) (CH$_{3}$)$_{2}$CHCH$_{2}$Cl. D) (CH$_{3}$)$_{3}$CCl. Show Answer Correct Answer: D) (CH$_{3}$)$_{3}$CCl. 4. Which of the haloalkanes is most likely to undergo substitution reactions? A) Alkyl fluorides. B) Alkyl chlorides. C) Alkyl bromides. D) Alkyl iodides. Show Answer Correct Answer: D) Alkyl iodides. 5. A primary alkyl halide would prefer to undergo ..... A) SN1 reaction. B) SN2 reaction. C) $\alpha$-Elimination. D) Racemisation. Show Answer Correct Answer: B) SN2 reaction. 6. OF 1, 1, 2, 2-tetrachloropropane was heated with Zn dust and the product was bubbled through ammoniacal AgNO$_{3}$. What is the weight of precipitate obtained? A) 30.0g. B) 29.4g. C) 28.0g. D) 25.7g. Show Answer Correct Answer: B) 29.4g. 7. Which of the following reactions follows Markovnikov's rule? A) C$_{3}$H$_{6}$+Br$_{2}$. B) C$_{2}$H$_{4}$+HBr. C) C$_{3}$H$_{6}$+Cl$_{2}$. D) C$_{3}$H$_{6}$+HBr. Show Answer Correct Answer: D) C$_{3}$H$_{6}$+HBr. 8. Haloalkanes are best obtained by A) Swartz reaction. B) Darzzen's process. C) Finkelstein process. D) None of these. Show Answer Correct Answer: B) Darzzen's process. 9. The hybridisation of carbon in diamond is A) Sp3. B) Sp2. C) Sp. D) Dsp2. Show Answer Correct Answer: A) Sp3. 10. What type of reaction do haloarenes typically undergo? A) Decomposition reaction. B) Addition reaction. C) Nucleophilic substitution. D) Electrophilic aromatic substitution. Show Answer Correct Answer: D) Electrophilic aromatic substitution. 11. Of an organic halide (A) when dissolved in 2.0g of camphor, the melting point of the mixture was found to be 167 . Compound(A) when heated with Na gives a gas (B). 280ml of gas (B) at STP weighs 0.375g. What would be A in the whole process? (K$_{f}$ for camphor =40, m.pt of camphor=179 ). A) C$_{2}$H$_{5}$Br. B) CH$_{3}$I. C) (CH$_{3}$)$_{2}$CHI. D) C$_{3}$H$_{7}$Br. Show Answer Correct Answer: B) CH$_{3}$I. 12. What is the product from heating a secondary alcohol under reflux? A) Carboxylic acid. B) Ketone. C) Tertiary alcohol. D) Aldehyde. Show Answer Correct Answer: B) Ketone. 13. Bromination of methane in presence of sunlight is a A) Nucleophilic substitution. B) Free radical substitution. C) Electrophilic substitution. D) Nucleophilic addition. Show Answer Correct Answer: B) Free radical substitution. 14. Toluene reacts with a halogen in the presence of iron (III) chloride giving ortho and para halo compounds. The reaction is A) Electrophilic elimination reaction. B) Electrophilic substitution reaction. C) Free radical addition reaction. D) Nucleophilic substitution reaction. Show Answer Correct Answer: B) Electrophilic substitution reaction. 15. Which hybridization is absent in haloarenes? A) Sp. B) Sp2. C) Sp3. D) Sp3d. Show Answer Correct Answer: C) Sp3. 16. What is the role of Grignard reagents in the synthesis of complex molecules in the pharmaceutical and chemical industry? A) Building blocks. B) Inhibitors. C) Catalysts. D) Solvents. Show Answer Correct Answer: A) Building blocks. 17. Why Grignard reagent always prepared in anhydrous condition? A) Because it can extract hydrogen from R-X to hydrocarbon. B) Because it can extract hydrogen from H2O to Alkene. C) Because it can extract hydrogen even from H2O to hydrocarbon. D) None. Show Answer Correct Answer: C) Because it can extract hydrogen even from H2O to hydrocarbon. 18. Butane nitrile can be prepared by heating A) Propyl alcohol with KCN. B) Butyl chloride with KCN. C) Propyl chloride with KCN. D) Butyl alcohol with KCN. Show Answer Correct Answer: C) Propyl chloride with KCN. 19. List two physical properties of haloarenes that distinguish them from haloalkanes. A) Lower boiling points than haloalkanes. B) Generally more polar than haloalkanes. C) 1. Higher boiling points than haloalkanes. 2. Generally less polar than haloalkanes. D) Higher solubility in water than haloalkanes. Show Answer Correct Answer: C) 1. Higher boiling points than haloalkanes. 2. Generally less polar than haloalkanes. 20. Which of the following haloalkanes is the most reactive towards nucleophilic substitution? A) CH3Cl. B) CH3Br. C) CH3I. D) CH3F. Show Answer Correct Answer: C) CH3I. 21. The position of-Br in the compound in CH3CH=CHC(Br)(CH3)2 can be classified as ..... A) Allyl. B) Aryl. C) Vinyl. D) Secondary. Show Answer Correct Answer: A) Allyl. 22. Complete the following reaction 3R-OH + PCl3 $\rightarrow$ A) H2PO2. B) H3PO4. C) H3PO3. D) H3PO5. Show Answer Correct Answer: C) H3PO3. 23. Reaction of C$_{6}$H$_{5}$CH$_{2}$Br with aqueous solution hydroxide follows ..... A) S$_{N}$1 mechanism. B) S$_{N}$2 mechanism. C) Any of the two above depending upon the temperature of reaction. D) Satyzeff rule. Show Answer Correct Answer: A) S$_{N}$1 mechanism. 24. How does steric hindrance affect SN2 reactions? A) Steric hindrance only affects SN1 reactions. B) Steric hindrance has no effect on SN2 reactions. C) Steric hindrance decreases the rate of SN2 reactions. D) Steric hindrance increases the rate of SN2 reactions. Show Answer Correct Answer: C) Steric hindrance decreases the rate of SN2 reactions. 25. Benzyl chloride (C$_{6}$H$_{5}$CH$_{2}$Cl) can be prepared from toluene by chlorination With A) SO$_{2}$Cl$_{2}$. B) Cl$_{2 }$ /Fe. C) Cl$_{2 }$/hv. D) NaOCl. Show Answer Correct Answer: C) Cl$_{2 }$/hv. ← 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 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books