This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 11 Alcohols – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 20 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What can react with esters to create an alcohol? A) NaBH4 + H+. B) LiAlH4 + H2O. C) Grignard Reagent. D) Strong Base. Show Answer Correct Answer: B) LiAlH4 + H2O. 2. Which of the following is added to chloroform to slow down its aerial oxidation in presence of light? (1) Carbonyl chloride (2) Ethyl alcohol (3) Sodium hydroxide (4) Nitric acid A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 3. Which reagents below reacts with phenol and cyclopentanol? A) Sodium hydroxide. B) Sodium. C) Aqueous bromine. D) Acidic potassium manganite (VII) solution. Show Answer Correct Answer: B) Sodium. 4. Answer true or false to the following statement. Ethers are less soluble in water than are hydrocarbons with comparable molecular weight. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 5. What is the name of the functional group present in alcohols? A) Carboxyl. B) Carbon to carbon double bond. C) Hydroxyl. D) Hydroxyn. Show Answer Correct Answer: C) Hydroxyl. 6. Propanone on reaction with alkyl magnesium bromide followed by hydrolysis will produce A) Primary alcohol. B) Secondary alcohol. C) Tertiary alcohol. D) Carboxylic acid. Show Answer Correct Answer: C) Tertiary alcohol. 7. Which of the statement(s) is/are true for S$_{N}$2? i. Rearrangement occurs ii. Order of reactivity:methyl > 1$^{o}$ > 2$^{o}$ > 3$^{o}$ iii. The reaction order is 1$^{st}$ for both alkyl halide and nucleophile A) I only. B) I and ii. C) Ii and iii. D) I, ii and iii. Show Answer Correct Answer: C) Ii and iii. 8. Assertion(A):Phenols are less soluble in water as compared to alcohols.Reason(R):Phenols have large hydrophobic part 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: A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A). 9. What happens when tertiary butyl alcohol is passed over heated copper at 300$^\circ$C? A) Secondary butyl alcohol is formed. B) 2-methylpropene is formed. C) 1-butene is formed. D) Butanol is formed. Show Answer Correct Answer: B) 2-methylpropene is formed. 10. Which one of these is a secondary alcohol? A) Butan-1, 4-diol. B) 2-methylpropan-2-ol. C) Pentan-2-ol. D) Pentan-1-ol. Show Answer Correct Answer: C) Pentan-2-ol. 11. Assertion:The bond angle in alcohols is slightly lessthan the tetrahedral angle.Reason:In alcohols, the oxygen of-OH group is attachedto sp3 hybridized carbon atom. A) Assertion is correct, reason is correct; reason is a correctexplanation for assertion. B) Assertion is correct, reason is correct; reason is not acorrect explanation for assertion. C) Assertion is correct, reason is incorrect. D) Assertion is incorrect, reason is correct. Show Answer Correct Answer: A) Assertion is correct, reason is correct; reason is a correctexplanation for assertion. 12. What are the products of the hydrolysis of ethyl propanoate with potassium hydroxide? A) Ethanol and potassium propanoate. B) 1-propanol and potassium ethanoate. C) Ethanol and propanoic acid. D) 1-propanol and ethanoic acid. Show Answer Correct Answer: A) Ethanol and potassium propanoate. 13. Halogenoalkanes can undergo and elimination reaction with sodium hydroxide in ethanol. A similar dehydration/elimination reaction takes place with alcohols. What reaction conditions are required? A) Al$_{2}$O$_{3}$ and heat. B) NaOH in ethanol. C) Acidified K$_{2}$Cr$_{2}$O$_{7}$. D) Two of these. Show Answer Correct Answer: A) Al$_{2}$O$_{3}$ and heat. 14. Assertion:D(+)-Glucose is dextrorotatory in nature.Reason:'D' represents its dextrorotatory nature. A) Assertion is correct, reason is correct; reason is a correctexplanation for assertion. B) Assertion is correct, reason is correct; reason is not acorrect explanation for assertion. C) ) Assertion is correct, reason is incorrect. D) Assertion is incorrect, reason is correct. Show Answer Correct Answer: C) ) Assertion is correct, reason is incorrect. 15. Ethers are relatively inert compounds. True or false? A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: B) True. 16. What is the positive observation for Tollens' test? A) Brick red precipitate. B) Silver mirror precipitate. C) Light yellow precipitate. D) Yellow or orange precipitate. Show Answer Correct Answer: B) Silver mirror precipitate. 17. How many alcohols with molecular formula C4H10O are chiral in nature? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 18. Phenol on reaction with CO$_{2}$ in basic medium gives a compound A, when this A is reacted with acetic anhydride compound B is formed, compound B is used as antipyratic and non narcotic analgesic, identify B? A) Aspirin. B) Paracetamol. C) Picric acid. D) Salicylic acid. Show Answer Correct Answer: A) Aspirin. 19. Kolbe's reaction yield ..... A) Salicylaldeyde. B) Salicyclic acid. C) Acetyl salicyclic acid. D) Salicylaol. Show Answer Correct Answer: B) Salicyclic acid. 20. Which of the following gives most stable carbocation by dehydration? (1) (CH3 )2CH-OH (2) (CH3 )3C-OH (3) CH3-CH2-OH (4) CH3-CH2CH2-CH A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 21. Which of the following compounds is aromatic alcohol? A) A, B, C, D. B) A, D. C) B, C. D) A. Show Answer Correct Answer: B) A, D. 22. When alcohols act as an acid they are behaving like- A) Nucleophile. B) Electrophile. C) Free radical. D) None of the above. Show Answer Correct Answer: A) Nucleophile. 23. Phenyl magnesium bromide reacts with methanol to give what? A) C$_{6}$H$_{5}$-O-CH$_{3}$ + Mg(OH)Br. B) C$_{6}$H$_{5}$-OH + Mg(CH$_{3}$)Br. C) C$_{6}$H$_{5}$ + Mg(O-CH$_{3}$)Br. D) C$_{6}$H$_{5}$-CH$_{3}$ + Mg(OH)Br. E) C$_{6}$H$_{6}$ + Mg(O-CH$_{3}$)Br. Show Answer Correct Answer: E) C$_{6}$H$_{6}$ + Mg(O-CH$_{3}$)Br. 24. In addition to potassium dichromate, which of the following reagents/reaction conditions can ALSO be used to OXIDIZE alcohols? A) Aluminum oxide in sulfuric acid. B) Phosphoric acid, 330 C and 6 MPA. C) Acidified potassium permanganate. D) NaOH in ethanol. Show Answer Correct Answer: C) Acidified potassium permanganate. 25. Which of the following molecules would have the least vigorous reaction with sodium, Na(s)? A) Ethanol. B) 1-propanol. C) Water. D) 2-butanol. Show Answer Correct Answer: D) 2-butanol. ← 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 7Class 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 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books