This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 11 Alcohols – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. (9.11) How can alcohols undergo substitution reactions A) They can't under any circumstance. B) Converted into a better leaving group with HX. C) They do not need modification to undergo substitution. D) They are oxidized or reduced to be more reactive. Show Answer Correct Answer: B) Converted into a better leaving group with HX. 2. Which class of compound will be formed when NaBH$_{4}$ reacts with ketones? A) Alkene. B) Secondary alcohols. C) Primary alcohols. D) Chloroalkanes. Show Answer Correct Answer: B) Secondary alcohols. 3. What type of homologous series reacts with alcohols to form esters? A) Alkanes. B) Alkenes. C) Carboxylic acids. D) Cycloalkanes. Show Answer Correct Answer: C) Carboxylic acids. 4. CH3CH2OH can be converted into CH3CHO by ..... A) Catalytic hydrogenation. B) Treatment with LiAlH4. C) Treatment with pyridinium chlorochromate. D) Treatment with KMnO4. Show Answer Correct Answer: A) Catalytic hydrogenation. 5. A compound X with molecular formula C3H8O can be oxidised to Y with molecular formula C3H6O2. X is most likely ..... A) A primary alcohol. B) A secondary alcohol. C) An aldehyde. D) A ketone. Show Answer Correct Answer: A) A primary alcohol. 6. What observations would you expect to see in a positive Fehlings test for an aldehyde? A) Blue solution to brick-red solution. B) Blue solid to brick-red solution. C) Blue solution to brick-red solid. D) Blue solid to brick-red solid. Show Answer Correct Answer: C) Blue solution to brick-red solid. 7. Assertion:Ethyl phenyl ether on reaction with HBr formphenol and ethyl bromide.Reason:Cleavage of C-O bond takes place on ethyloxygenbond due to the more stable phenyl-oxygen bond 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 correct, reason is incorrect. Show Answer Correct Answer: C) Assertion is correct, reason is incorrect. 8. (9.8) what is another name for the elimination reaction of alcohols A) Dehydration. B) Dehydrohalogenation. C) Dehalogenation. D) Alkenization. Show Answer Correct Answer: A) Dehydration. 9. Lucas test is done for:(1) alkyl halides (2) alcohols (3) acids (4) aldehydes A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 10. Answer true or false to the following question. PCC will oxidize a primary alcohol to a carboxylic acid. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 11. Why was ether replaced with other sedatives for anesthesia during surgery? A) Ether is flammable. B) The sweet smell of ether is unpleasant for many patients. C) Sometimes, ether may wear off during surgery. D) Ether caused permanent brain damage. Show Answer Correct Answer: A) Ether is flammable. 12. The reaction which can be used for Distinguition of phenol and aniline is A) Coupling reaction. B) Lucas test. C) Fehling test. D) Tollen's test. Show Answer Correct Answer: A) Coupling reaction. 13. The type of alcohol in alcoholic beverages is called A) Fermentation. B) Detoxification. C) Ethanol. D) Vodka. Show Answer Correct Answer: C) Ethanol. 14. Amines can be changed into alcohols by A) Acidified KMnO$_{4}$. B) HNO$_{2}$. C) Aq. KOH. D) HNO$_{3}$. Show Answer Correct Answer: B) HNO$_{2}$. 15. Which of the following are not used to convert RCHO into RCH2OH? A) H2 /Pd. B) LiAlH4. C) NaBH4. D) Reaction with RMgX followed by hydrolysis. Show Answer Correct Answer: D) Reaction with RMgX followed by hydrolysis. 16. Copper vapours are used to carry out oxidation at:- A) 537K. B) 573K. C) 577K. D) None of the above. Show Answer Correct Answer: B) 573K. 17. What type of reaction do alcohols typically undergo when treated with acids? A) Dehydration reaction. B) Substitution reaction. C) Hydrogenation reaction. D) Oxidation reaction. Show Answer Correct Answer: A) Dehydration reaction. 18. Which one gives blue colour in Victor Meyer's test? A) 1-butanol. B) 2-butanol. C) 2-methyl 2-propanol. D) Ethanol. Show Answer Correct Answer: B) 2-butanol. 19. Which one gives turbidity immediately with Lucas reagent? A) 2-propanol. B) 1-propanol. C) 2-methyl 2-propanol. D) 2-methyl 1-propanol. Show Answer Correct Answer: C) 2-methyl 2-propanol. 20. What is the role of phenols in biological systems? A) Phenols act as antioxidants, signaling molecules, and precursors for biomolecules in biological systems. B) Phenols are primarily used for energy storage in cells. C) Phenols function mainly as enzymes in metabolic pathways. D) Phenols serve as structural components in cell membranes. Show Answer Correct Answer: A) Phenols act as antioxidants, signaling molecules, and precursors for biomolecules in biological systems. 21. (9.3) What is the common name of CH3CH2CH2-O-CH2CH3 A) Propyl ethyl ether. B) Ethyl propyl ethoxide. C) Ethyl propyl ether. D) Dipropyl ether. Show Answer Correct Answer: C) Ethyl propyl ether. 22. Phenol A) Solid. B) Crystalline solid. C) Gas. D) Liquid. Show Answer Correct Answer: B) Crystalline solid. 23. The ether substituent is named ..... A) -hydroxy. B) -methoxy. C) -alkoxy. D) -phenoxy. Show Answer Correct Answer: C) -alkoxy. 24. Aldehydes and ketones can be reduced to primary and secondary alcohols by using what chemical? A) LiBH4. B) LiAlH4. C) NaAlH4. D) NaBH4. Show Answer Correct Answer: D) NaBH4. 25. Which of the following phenols has the highest pKa value? A) Phenol. B) P-Cresol. C) O-Nitrophenol. D) O-Cresol. E) P-Nitrophenol. Show Answer Correct Answer: B) P-Cresol. ← 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