This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 11 Alcohols – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. For BONUS Question:what alcohol is the active constituent of intoxicating beverages A) Wood alcohol. B) Grain alcohol. C) Spirits. D) Ethylene glycol. Show Answer Correct Answer: B) Grain alcohol. 2. Products in the reaction C$_{6}$H$_{5}$OCH$_{3}$ + HI $\rightarrow$ A) C$_{6}$H$_{5}$I and HOCH$_{3}$. B) C$_{6}$H$_{5}$OH and CH$_{3}$I. C) C$_{6}$H$_{5}$CH$_{2}$OH and CH$_{3}$I. D) CH$_{3}$CH$_{2}$I and C$_{6}$H$_{5}$OH$_{ }$. Show Answer Correct Answer: B) C$_{6}$H$_{5}$OH and CH$_{3}$I. 3. Hydroboration-oxidation reaction gives A) Primary alcohol. B) Secondary alcohol. C) Tert-alcohol. D) All the three. Show Answer Correct Answer: A) Primary alcohol. 4. What is the chemical test to distinguish class of alcohols (primary, secondary and tertiary alcohol) A) Baeyer's Test. B) Tollens' Test. C) Iodoform Test. D) Lucas Test. Show Answer Correct Answer: D) Lucas Test. 5. Dehydration of an alcohol produces what type of compound? A) An aldehyde. B) An alkane. C) An alkene. D) A ketone. Show Answer Correct Answer: C) An alkene. 6. 1-methylpropanol can be identified by which of the following test A) Lucas test and give immediate turbidity. B) Lucas test and give turbidity after 10 to 15 mins. C) Iodoform test and give yellow ppt. D) Both a and c. E) Both b and c. Show Answer Correct Answer: E) Both b and c. 7. Ethers are used on a large scale as: A) Anesthetics. B) Solvents. C) Humectants. D) Germicides. Show Answer Correct Answer: B) Solvents. 8. What colour would you see in a distinguishing test between phenols and alcohols? (Using iron (III) chloride). A) Purple precipitate. B) Purple solid. C) Purple solution. D) Purple gas. Show Answer Correct Answer: C) Purple solution. 9. (9.16) What is the first step in opening of epoxide ring? (using strong nucleophile and acid) A) Nucleophilic attack on carbon. B) Bond cleavage. C) Protonation of O. D) None of the above. Show Answer Correct Answer: A) Nucleophilic attack on carbon. 10. Describe two physical properties of phenols. A) Insoluble in water. B) Highly volatile at room temperature. C) 1. Soluble in water; 2. Higher boiling points than aliphatic alcohols. D) Lower boiling points than aliphatic alcohols. Show Answer Correct Answer: C) 1. Soluble in water; 2. Higher boiling points than aliphatic alcohols. 11. Which of the following compounds is to be reacted with Methanal followed by hydrolysis to give Phenymethanol. A) Methyl magnesium bromide. B) Bromobenzene. C) Phenol. D) Phenyl magnesium bromide. Show Answer Correct Answer: D) Phenyl magnesium bromide. 12. In the acetylation of glucose, which group is involved inthe reaction A) CHO group. B) >C = O group. C) Alcoholic OH group. D) All of these. Show Answer Correct Answer: C) Alcoholic OH group. 13. "sqeaky pop" is the observation confirming which gas? A) O$_{2}$. B) H$_{2}$. C) CO$_{2}$. D) H$_{2}$O. Show Answer Correct Answer: B) H$_{2}$. 14. What is the primary method for synthesizing phenols from benzene? A) Nitration of benzene. B) Hydroxylation of benzene. C) Alkylation of benzene. D) Reduction of phenol. Show Answer Correct Answer: B) Hydroxylation of benzene. 15. Aspirin is also known as- A) Acetoxysalicylic acid. B) 2-Acetoxybenzoic acid. C) BOTH. D) None of the above. Show Answer Correct Answer: B) 2-Acetoxybenzoic acid. 16. Which of the following alcohols will give the most stable carbocation during dehydration? A) 2-methyl-1-propanol. B) 2-methyl-2-propanol. C) 1-Butanol. D) 2-Butanol. Show Answer Correct Answer: B) 2-methyl-2-propanol. 17. Arrange the following compounds in increasing order of boiling point. Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol A) Propan-1-ol, butan-2-ol, butan-1-ol, pentan-1-ol. B) Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol. C) Pentan-1-ol, butan-2-ol, butan-1-ol, propan-1-ol. D) Pentan-1-ol, butan-1-ol, butan-2-ol, propan-1-ol. Show Answer Correct Answer: B) Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol. 18. Which of the following molecules can be reduced using LiAlH$_{4}$? A) Primary & secondary alcohols ONLY. B) Carboxylic acids & ketones. C) Carboxylic acids, ketones & aldehydes. D) Ketones and primary alcohols ONLY. Show Answer Correct Answer: C) Carboxylic acids, ketones & aldehydes. 19. Assertion (A):Ethanol is a weaker acid than phenol.Reason (R):Sodium ethoxide may be prepared by the reaction of ethanol with aqueous NaOH. A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A). B) Both Assertion (A) and Reason (R) are true but Reason is not the correct explanation of the Assertion. C) Assertion (A) is true, but Reason (R) is false. D) Assertion (A) is false, but Reason (R) is true. Show Answer Correct Answer: C) Assertion (A) is true, but Reason (R) is false. 20. Which of the following reacts with NaOH to give an alcohol? A) Propene. B) Butene. C) Ethanal. D) Methanal. Show Answer Correct Answer: D) Methanal. 21. What is the classification of the alcohol formed if 2-bromo-2-methylbutane undergoes nucleophilic substitution with KOH? A) Quaternary alcohol. B) Secondary alcohol. C) Tertiary alcohol. D) Primary alcohol. Show Answer Correct Answer: C) Tertiary alcohol. 22. Phenolphthalein is a special test for phenols. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. The mechanism of dehydration of alcohols to alkenes involves- A) Elimination reaction. B) Substitution reaction. C) Rearrangement. D) None of the above. Show Answer Correct Answer: A) Elimination reaction. 24. Ether molecules are polar, but do not form hydrogen bonds with other ether molecules because ..... A) Ether molecules are so reactive that they never have an opportunity to form hydrogen bonds. B) There are too many hydrogen atoms on the molecules to bond with just one oxygen atom. C) There is no hydrogen atom bonded to the oxygen. D) The molecules are generally too large. E) Only binary compounds form hydrogen bonds. Show Answer Correct Answer: C) There is no hydrogen atom bonded to the oxygen. 25. The general formula for alcohols is ROH.Where the R, represents an alkyl group attached to the hydroxyl group. A) 1st statement is correct. B) 2nd statement is correct. C) Both are correct. D) Neither. Show Answer Correct Answer: C) Both are correct. ← PreviousNext →Related QuizzesClass 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 1Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 2Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 3Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 4Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 5Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 6Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 8Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 9Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 10Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books