This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 13 Amines – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 13 Amines Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In the strongly acidic medium, aniline forms ..... which is meta directing. That is why besides the ortho and para derivatives, significant amount of meta derivativeis also formed. A) Anilinium ion. B) Acetanilide. C) Diazonium ion. D) Benzyl cation. Show Answer Correct Answer: A) Anilinium ion. 2. Which of the following amines is most basic? A) Pyrrole. B) Aniline. C) Piperidine. D) Acetonitrile. Show Answer Correct Answer: C) Piperidine. 3. Basic rxn's always start with oxygen attacking carbonyl A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. Oxidation product of aniline in presence of Na$_{2}$Cr$_{2}$O$_{7}$/H$_{2}$SO$_{4}$ A) Schiff base. B) Benzoqinone. C) Phenol. D) Benzoic acid. Show Answer Correct Answer: B) Benzoqinone. 5. Pyr reduces hydrogen A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 6. Which of the following reactions can be used to prepare a primary amine from a halogenoalkane? A) Reduction with LiAlH4. B) Reduction with H2 and Ni catalyst. C) Reaction with ammonia. D) Reaction with an amine. E) None of the above. Show Answer Correct Answer: C) Reaction with ammonia. 7. Select the strongest base A) Aniline. B) N-ethylaniline. C) N, N-diethylaniline. D) Piperidine. Show Answer Correct Answer: D) Piperidine. 8. Why are primary aliphatic amines stronger bases than ammonia? A) They have more alkyl groups. B) They have a higher concentration of hydroxide ions. C) They have a lower concentration of hydroxide ions. D) They have more lone pairs of electrons. Show Answer Correct Answer: A) They have more alkyl groups. 9. Estimated pK$_{a }$of amine A) 35-38. B) 10-12. C) 4-7. D) 25-29. Show Answer Correct Answer: A) 35-38. 10. Which of the following is a correct example of a tertiary amine? A) N-methylethanamine. B) N, N-dimethylpropanamine. C) N-ethylmethanamine. D) 2-butanamine. Show Answer Correct Answer: B) N, N-dimethylpropanamine. 11. Estimated pK$_{a }$of pyridine A) 5-6. B) 10-12. C) 35-38. D) 40-42. Show Answer Correct Answer: A) 5-6. 12. Benzenediazoniumchloride react with phenol to form A) P-chlorophenol. B) Chlorobenzene. C) P-hydroxyazobenzene. D) DDT. Show Answer Correct Answer: C) P-hydroxyazobenzene. 13. Which of the following factors does not significantly affect the basicity of aliphatic amines? A) Inductive effect. B) Solvation. C) Resonance. D) Hyperconjugation. Show Answer Correct Answer: D) Hyperconjugation. 14. During continuous monitoring experiments, samples are taken at regular intervals for what purpose? A) To measure the boiling point. B) To titrate. C) To determine the density. D) To calculate the melting point. Show Answer Correct Answer: B) To titrate. 15. A reaction in which an amine is converted to an alkene is called? A) Hofmann Elimination. B) Wittig reaction. C) Imine reduction. D) Diazotization. Show Answer Correct Answer: A) Hofmann Elimination. 16. Excess bromoethane is reacted with a limiting amount of ethanolic ammonia. What will the product of this reaction be? A) Ethaylamine. B) Diethylamine. C) Triethylamine. D) A mixture. Show Answer Correct Answer: D) A mixture. 17. What is the effect of electron-withdrawing groups on the basicity of amines? A) Increase basicity. B) Decrease basicity. C) Make them neutral. D) No effect. Show Answer Correct Answer: B) Decrease basicity. 18. Which amine below is an primary aromatic amine? A) 3-methylbenzamine. B) N-methyl-2-phenylethanamine. C) N-ethylbenzamine. D) None of the above. Show Answer Correct Answer: A) 3-methylbenzamine. 19. Which of the following statement is INCORRECT about Sandmeyer reaction and Gattermann reactions A) Both are used for preparation of haloarenes from Benzenediazonium chloride. B) CuX/HX reagents used in Sandmeyer reaction. C) HX in presence of Cu powder is used n Gattermann reaction. D) Gattermann reaction gives better yield than Sandmeyer reaction. Show Answer Correct Answer: D) Gattermann reaction gives better yield than Sandmeyer reaction. 20. $\frac{NH3}{pTSA}$ A) Imine. B) Iminium ion. C) All the above. D) None of the above. Show Answer Correct Answer: A) Imine. 21. Aniline and N methylaniline can be distinguish by A) Hinsberg reagent. B) Nitrous acid. C) Carbylamine test. D) Azo dye test. Show Answer Correct Answer: C) Carbylamine test. 22. What is the purpose of diazotization according to the text? A) To create stable compounds for long-term use. B) To generate useful synthetic intermediates. C) To produce compounds that are difficult to decompose. D) To create a poor leaving group in chemical reactions. Show Answer Correct Answer: B) To generate useful synthetic intermediates. 23. Structure A release gas nitrogen after react with nitrous acid. Predict structure A. A) 1-butanamine. B) N-methyl-2-propanamine. C) Aniline. D) N-methylaniline. Show Answer Correct Answer: A) 1-butanamine. 24. Carbylamine test is positive for: A) Primary amines only. B) Secondary amines only. C) Both primary and secondary amines. D) Aromatic amines only. Show Answer Correct Answer: A) Primary amines only. 25. The order of reactivity of halides with amines is A) RI > RBr B) RI RCl. C) RBr >RI>RCl. D) RI > RBr >RCl. Show Answer Correct Answer: D) RI > RBr >RCl. ← PreviousNext →Related QuizzesClass 12 Chemistry (Part Ii) Chapter 13 Amines Quiz 1Class 12 Chemistry (Part Ii) Chapter 13 Amines Quiz 2Class 12 Chemistry (Part Ii) Chapter 13 Amines Quiz 3Class 12 Chemistry (Part Ii) Chapter 13 Amines Quiz 5Class 12 Chemistry (Part Ii) Chapter 13 Amines Quiz 6Class 12 Chemistry (Part Ii) Chapter 13 Amines Quiz 7Class 12 Chemistry (Part Ii) Chapter 13 Amines Quiz 8Class 12 Chemistry (Part Ii) Chapter 13 Amines Quiz 9Class 12 Chemistry (Part Ii) Chapter 13 Amines Quiz 10Class 12 Chemistry (Part Ii) Chapter 13 Amines Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books