This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 11 Alcohols – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. It is substance that kills microorganisms on inanimate objects. A) Disinfectant. B) Antiseptic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Disinfectant. 2. What reagent adds two halogens (X) in Syn positions? A) X2. B) X2 + H2O. C) HX. D) HX + ROOR. Show Answer Correct Answer: A) X2. 3. What is the product in oxidation of secondary alcohols? A) An aldehyde. B) A ketone. C) Ainsley harriet's moist lasagne. D) A carboxylic acid. Show Answer Correct Answer: B) A ketone. 4. When phenol is treated with CHCl$_{3}$ and NaOH the product formed is A) Benzaldehyde. B) Salicylaldehyde. C) Benzoic acid. D) Salicylic acid. Show Answer Correct Answer: B) Salicylaldehyde. 5. Sodiumboro Hydride is used to reduce the ester group. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 6. The names of chemicals that contain a ketone functional group will end with ..... A) -al. B) -ol. C) -one. D) -oic acid. Show Answer Correct Answer: C) -one. 7. The boiling point of alcohols increases as the molecules become smaller. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 8. What reagent adds an alcohol in the Anti Markovnikov, Syn position? A) BH3, THF + H2O2, NaOH. B) Hg(OAc)2, EtNH2 + NaBH4. C) O2O4 + NMO. D) KMnO4, NaOH + cold. Show Answer Correct Answer: A) BH3, THF + H2O2, NaOH. 9. What is the reagent/condition can be used to produce alcohols from alkenes? A) Conc H$_{2}$SO$_{4}$ and heated. B) Na. C) H$_{2}$/ Pt. D) H$_{2}$O / H$^{+}$. Show Answer Correct Answer: D) H$_{2}$O / H$^{+}$. 10. General formula for alcohol is ..... A) C$_{n}$H$_{2n+1}$O. B) C$_{n}$H$_{2n+1}$OH. C) C$_{n}$H$_{2n}$OH. D) C$_{n}$H$_{2n+1}$COOH. Show Answer Correct Answer: B) C$_{n}$H$_{2n+1}$OH. 11. The principal ingredient in alcoholic beverages is: A) Isopropyl alcohol. B) Denatured alcohol. C) Methanol. D) Ethanol. Show Answer Correct Answer: D) Ethanol. 12. Phenol is less acidic than ..... A) Ethanol. B) O-nitrophenol. C) O-methylphenol. D) O-methoxyphenol. Show Answer Correct Answer: B) O-nitrophenol. 13. When treated with sulfuric acid @ 170 C, which of these molecules will produce the greatest number of structural and/or geometric isomers? A) Ethanol. B) 2-butanol. C) 3-pentanol. D) 1-propanol. Show Answer Correct Answer: C) 3-pentanol. 14. On standing, phenol turns pink due to its ..... into phenoquinone. A) Reduction. B) Oxidation. C) Elimination. D) Electrolysis. Show Answer Correct Answer: B) Oxidation. 15. Type of alcohol where-OH is attached to a carbon atom having two other carbon atoms attached to it A) Primary. B) Secondary. C) Tertiary. D) Quaternary. Show Answer Correct Answer: B) Secondary. 16. (9.16) In asymmetric epoxides reacting with strong nucleophiles and acids, which carbon does the Nucleophile prefer to attack A) The more substituted carbon. B) The less substituted carbon. C) Carbon with a more positive charge. D) Carbon that has a more electronegative functional group. Show Answer Correct Answer: B) The less substituted carbon. 17. Identify the main difference between primary, secondary, and tertiary alcohols. A) The main difference is the molecular weight of the alcohols. B) The main difference is the presence of double bonds in the structure. C) The main difference is the boiling point of the alcohols. D) The main difference lies in the number of carbon atoms attached to the carbon bearing the-OH group:primary (1), secondary (2), tertiary (3). Show Answer Correct Answer: D) The main difference lies in the number of carbon atoms attached to the carbon bearing the-OH group:primary (1), secondary (2), tertiary (3). 18. Commonly used as general anesthetic A) ROR. B) ROH. C) RCOR. D) RCOOR. Show Answer Correct Answer: A) ROR. 19. Sodium metals can evolve Hydrogen when reacted with A) Water. B) Alcohols. C) Phenols. D) All of these. Show Answer Correct Answer: D) All of these. 20. Salicylic acid on reaction with zinc dust on heating gives what? A) Aspirin. B) Salicylaldehyde. C) Benzoic acid. D) Benzene. E) Phenol. Show Answer Correct Answer: C) Benzoic acid. 21. Acid or base catalyzed hydrolysis of epoxides gives ..... A) Cis-Vicinal glycols. B) Trans-Vicinal glycols. C) Can't Say. D) None. Show Answer Correct Answer: B) Trans-Vicinal glycols. 22. Which of the following isomeric alcohols is the most soluble in water? A) N-butyl alcohol. B) Isobutyl alcohol. C) Sec-butyl alcohol. D) Tert-butyl alcohol. Show Answer Correct Answer: D) Tert-butyl alcohol. 23. What reagents are used to cleave ether? A) Strong base + 1 alkyl halide. B) Strong acid, $\Delta$. C) Strong base + 2 alkyl halide. D) Strong base + 3 alkyl halide. Show Answer Correct Answer: B) Strong acid, $\Delta$. 24. What is the molecular formula of propanol? A) C$_{3}$H$_{8}$O. B) C$_{3}$H$_{7}$O. C) C$_{2}$H$_{6}$O. D) C$_{4}$H$_{10}$O. Show Answer Correct Answer: A) C$_{3}$H$_{8}$O. 25. Monochlorination of toluene in sunlight followed by hydrolysis with aqueous sodium hydroxide gives what? A) No reaction. B) Benzyl alcohol. C) Benzal alcohol. D) 2, 4-Dihydroxytoluene. E) M-Cresol. Show Answer Correct Answer: B) Benzyl alcohol. 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