This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Chemistry Part Ii > Class 12 Chemistry (Part Ii) Chapter 11 Alcohols – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following set of reactants is appropriate for the preparation of t-butyl ethyl ether? A) T-butyl chloride and Sodium ethoxide. B) Sodium tertiary butoxide and Ethyl chloride. C) Ethyl chloride and Butyl alcohol. D) Butyl chloride and Ethyl alcohol. Show Answer Correct Answer: B) Sodium tertiary butoxide and Ethyl chloride. 2. Dehydration of alcohol is an example of A) Elimination reaction. B) Substitution reaction. C) Redox reaction. D) Addition reaction. Show Answer Correct Answer: A) Elimination reaction. 3. What is the IUPAC name for the product of the reaction between 2-methylbutane-1, 3-diol and excess hydrogen bromide? A) 1, 3-dibromomethylbutane. B) 2-methyl-2-bromobutane. C) 2-bromo-2-methylbutane. D) 1, 3-dibromo-2-methylbutane. Show Answer Correct Answer: D) 1, 3-dibromo-2-methylbutane. 4. How many primary alcohols are possible for molecular formula C$_{4}$H$_{10}$O? A) 4+0. B) 1+1. C) 2-1. D) 2+1. Show Answer Correct Answer: B) 1+1. 5. Choose the correct order of acidic strength. A) O-cresol < o-nitrophenol< phenol. B) O-cresol < phenol < o-nitrophenol. C) O-nitrophenol< phenolo < cresol. D) O-nitrophenol < o-cresol < phenol. Show Answer Correct Answer: B) O-cresol < phenol < o-nitrophenol. 6. Which out of these reagent provides product with syn stereochemistry during the hydroxylation of alkenes? A) Cold alkaline potassium permanganate solution. B) Osmium tetroxide + Sodiumbisulphite. C) Both. D) None. Show Answer Correct Answer: C) Both. 7. Which of the following compound is most acidic A) 2, 2-Dichloro ethanol. B) Methanol. C) Ethanol. D) 2-Chloro ethanol. Show Answer Correct Answer: A) 2, 2-Dichloro ethanol. 8. (9.1) What do alcohols, ethers and epoxides have in common A) C-O sigma bonds. B) Presence of pi bonds. C) Sp hybridized C in functional group. D) Presence of alkyl halide. Show Answer Correct Answer: A) C-O sigma bonds. 9. Compound A gives B by reaction with oxygen gas.B gives C and D on hydrolysis in presence of acid ..... D is an important carbonyl compound ..... which of the following statement is not correct about this reaction. A) B is cumene hydroperoxide. B) D is ethanal. C) A is isopropyl benzene. D) C is phenol. Show Answer Correct Answer: B) D is ethanal. 10. Which one among the following is a strongest base A) Methyl amine. B) Ammonia. C) Phenyl amine. D) None of the above. Show Answer Correct Answer: A) Methyl amine. 11. (9.14) How are ethers converted to allow them to react in substitution or elimination reactions? A) Reaction w/ 2 H-X to convert it to 2 R-X and H2O. B) Reaction w/ H-X to convert it to R-OH and X-. C) Reaction w/ H-X to convert it to R-OHX good leaving group. D) Depends on the identity of the ether. Show Answer Correct Answer: A) Reaction w/ 2 H-X to convert it to 2 R-X and H2O. 12. What is the colour change seen in the oxidation of alcohols A) Green to orange. B) Green to blue. C) Blue to orange. D) Orange to green. Show Answer Correct Answer: D) Orange to green. 13. Choose the name reaction that produces benzaldehyde from Toluene and Chromyl chloride. A) Gattermann Koch reaction. B) Aldol condensation. C) Clemmensen reduction. D) Etard reaction. Show Answer Correct Answer: D) Etard reaction. 14. The concentration of alcohol in alcoholic beverages is expressed as A) Proof. B) Grams. C) Percentage. D) Volume. Show Answer Correct Answer: A) Proof. 15. What is the molecular formula of Benzene? A) C$_{8}$H$_{8}$. B) C$_{6}$H$_{10}$. C) C$_{6}$H$_{12}$. D) C$_{6}$H$_{6}$. Show Answer Correct Answer: D) C$_{6}$H$_{6}$. 16. Answer true or false to the following question. PCC will oxidize a secondary alcohol to a ketone. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 17. When phenol is treated with excess of bromine water, it gives a white precipitate of ..... A) M-bromophenol. B) O-and p-bromophenol. C) 2, 4-dibromophenol. D) 2, 4, 6-tribromophenol. Show Answer Correct Answer: D) 2, 4, 6-tribromophenol. 18. A weak acid is one which ..... A) Partially dissociates. B) Completely ionizes. C) Totally dissolves. D) Has a higher pH. Show Answer Correct Answer: A) Partially dissociates. 19. Which functional group is present in phenol? A) Carboxyl group. B) Amino group. C) Hydroxyl group. D) Sulfhydryl group. Show Answer Correct Answer: C) Hydroxyl group. 20. What gas is produced when potassium carbonate reacts with ethanoic acid? A) Oxygen. B) Carbon dioxide. C) Chlorine. D) Hydrogen. Show Answer Correct Answer: B) Carbon dioxide. 21. What is the reaction condition in the conversion of phenol to ortho & para bromo phenol?? A) Br2 + Cs2 at 273K. B) Br2 at 273 K. C) Br2 + water at 453 K. D) Br 2 + CHCl3 at 278 K. Show Answer Correct Answer: A) Br2 + Cs2 at 273K. 22. What type of reaction can a halogenoalkane undergo to form an alcohol? A) Nucleophilic Substitution. B) Nucleophilic Addition. C) Reduction. D) Oxidation. Show Answer Correct Answer: A) Nucleophilic Substitution. 23. What functional group is-HC=O A) Carboxyl. B) Carbonyl Ketone. C) Methyl. D) Carbonyl Aldehyde. Show Answer Correct Answer: D) Carbonyl Aldehyde. 24. Chlorine reacts with ethanol to give ..... A) Acetaldehyde. B) Chloroform. C) Chloral. D) Diethyl chloride. Show Answer Correct Answer: C) Chloral. 25. Is 3-methylbutan-2-ol a primary, secondary or tertiary alcohol? A) Primary. B) Secondary. C) Tertiary. D) None of these. Show Answer Correct Answer: B) Secondary. 26. What are needed to synthesize Ether? A) Alcohol + Strong Base + 1 Alkyl Halide. B) Alkene + MCPBA. C) Ketone + NaBH4 + H+. D) Aldehyde + Grignard reagent. Show Answer Correct Answer: A) Alcohol + Strong Base + 1 Alkyl Halide. 27. Why is ethanol more soluble in water than propanol? A) Because less hydrophobic areas. B) Because can form more hydrogen bond with water molecules. C) Because more hydrophilic areas. D) Because can form dimer structure. Show Answer Correct Answer: A) Because less hydrophobic areas. 28. Answer true or false to the following question. (CH$_{3}$CH$_{2}$)$_{2}$CHOH is classified as a 3$^\circ$ alcohol. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 29. IUPAC name of m-cresol is what? A) 2-methoxyphenol. B) 2-methylphenol. C) 3-methylphenol. D) Benzene-1, 3-diol. Show Answer Correct Answer: B) 2-methylphenol. 30. Which one of the following is the reagent used to identifyglucose? A) Neutral ferric chloride. B) Chloroform and alcoholic KOH. C) Ammoniacal silver nitrate. D) Sodium ethoxide. Show Answer Correct Answer: C) Ammoniacal silver nitrate. 31. What carbonyl reaction forms a hemiacetal? A) Carbonyl + KCN, H+. B) Carbonyl + alcohol. C) Carbonyl + H2O. D) Carbonyl + Acid. Show Answer Correct Answer: B) Carbonyl + alcohol. 32. (9.8) What type of alcohols undergo E2 dehydration A) Tertiary. B) Secondary. C) Primary. D) Diols, triols etc. Show Answer Correct Answer: C) Primary. 33. The simplest alcohol is ethanol.This alcohol is poisonous and should never be used internally or externally. A) 1st statement is correct. B) 2nd statement is correct. C) Both statements are correct. D) None of the statements are correct. Show Answer Correct Answer: D) None of the statements are correct. 34. Alcohols are isomeric with A) Carboxylic acids. B) Ketones. C) Aldehydes. D) Ethers. Show Answer Correct Answer: D) Ethers. 35. What carbonyl reaction forms an acetal? A) Carbonyl + acid. B) Carbonyl + alcohol. C) Carbonyl + Grignard reagent. D) Carbonyl + H2O. Show Answer Correct Answer: A) Carbonyl + acid. 36. Picricacid is a yellow coloured compound. Its chemical name is A) 2, 4, 6-tribromophenol. B) 2, 4, 6-trinitropheriol. C) M-nitrobenzoic acid. D) P-nitrophenol. Show Answer Correct Answer: B) 2, 4, 6-trinitropheriol. 37. The type of alcohol present in alcoholic beverages is called: A) Fermentation. B) Vodka. C) Detoxification. D) Ethanol. Show Answer Correct Answer: D) Ethanol. 38. Name the type of reaction for the formation of alcohols from aldehydes and ketones A) Substitution reaction. B) Addition reaction. C) Reduction reaction. D) Oxidation reaction. Show Answer Correct Answer: C) Reduction reaction. 39. Which one is used as antifreeze in car radiators? A) Glycol. B) Glycerol. C) Propanol. D) Ethanol. Show Answer Correct Answer: A) Glycol. 40. What reagent splits an alkene into two ketones? A) KMnO4, NaOH + cold. B) H3O+. C) OsO4 + NMO. D) O3 + DMS or Zn/H2O. Show Answer Correct Answer: D) O3 + DMS or Zn/H2O. 41. Ethanol is used in some after-shave lotions and deodorants.Which pair of properties makes it suitable for these uses? A) It is flammable and vaporises easily. B) It is a good solvent and vaporises easily. C) It is flammable and mixes easily with water. D) It is colourless and has a low freezing point. Show Answer Correct Answer: B) It is a good solvent and vaporises easily. 42. Why is hydrogen cyanide not added directly to an aldehyde/ketone for a nucleophilic addition reaction? A) Because hydrogen cyanide is a common ingredient in household products. B) Because hydrogen cyanide is not reactive with aldehyde/ketone. C) Hydrogen cyanide is highly toxic and can be lethal if ingested or inhaled. D) Because hydrogen cyanide is too expensive to use in the reaction. Show Answer Correct Answer: C) Hydrogen cyanide is highly toxic and can be lethal if ingested or inhaled. 43. What's the characteristic of the ethers' boiling points? A) Low and lower than alcohols'. B) High and higher than alcohols'. C) High and lower than alcohols'. D) Low and higher than alcohols'. Show Answer Correct Answer: A) Low and lower than alcohols'. 44. BHA and BHT are antioxidants derived from plants. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 45. Phenol can be distinguished from ethanol by the reactions with ..... A) Br2/water. B) Na. C) Neutral FeCl3. D) All the above. Show Answer Correct Answer: D) All the above. 46. Which halogenoalkane is the most reactive? A) Halogenoalkane with chlorine (Cl). B) Halogenoalkane with bromine (Br). C) Halogenoalkane with fluorine (F). D) Halogenoalkane with iodine (I). Show Answer Correct Answer: C) Halogenoalkane with fluorine (F). 47. (9.16) What is the reaction mechanism of an epoxide reaction with ACIDS A) E2. B) E1. C) Sn2. D) Inconclusive. E) Sn1. Show Answer Correct Answer: D) Inconclusive. 48. (9.11) how does acidity and reactivity increase in alkyl halides A) Increase down the group. B) Decrease down the group. C) All the above. D) None of the above. Show Answer Correct Answer: A) Increase down the group. 49. (9.13) How do tosylates react with alcohols? A) Redox. B) Subtitution. C) Addition. D) Elimination. Show Answer Correct Answer: B) Subtitution. 50. What is formed when an alcohol reacts with a carboxylic acid? A) Aldehyde. B) Ketone. C) Alkane. D) Ester. Show Answer Correct Answer: D) Ester. 51. Assertion:ter-Butyl methyl ether is not prepared by thereaction of ter-butyl bromide with sodium methoxide.Reason:Sodium methoxide is a strong nucleophile. A) Assertion is correct, reason is correct; reason is a correctexplanation for assertion. B) Assertion is correct, reason is incorrect. C) Assertion is incorrect, reason is correct. D) Assertion is correct, reason is correct; reason is not acorrect explanation for assertion. Show Answer Correct Answer: D) Assertion is correct, reason is correct; reason is not acorrect explanation for assertion. 52. Propan-1-ol boils at a higher temperature that propan-2-ol. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 53. Which of the class of alcohols can be produced ketone when reacted with acidified KMnO$_{4 }$and heated? A) Primary alcohol. B) Secondary alcohol. C) Tertiary alcohol. D) All the class of alcohols. Show Answer Correct Answer: B) Secondary alcohol. 54. When 1-pentanol is heated with HCl/ZnCl$_{2}$, 1-chloropentane is the major product. This is an ..... reaction, and ..... is also produced as product. A) SN1, H$_{2}$O. B) SN2, H$_{2}$O. C) SN1, H$_{2}$. D) SN2, H$_{2}$. E) E2, H$_{2}$. Show Answer Correct Answer: B) SN2, H$_{2}$O. 55. Which of the following statements is NOT TRUE of methanol? A) Methanol occurs naturally in many fruits and vegetables. B) Small amounts of methanol occur naturally in many living organisms as part of their metabolic processes. C) It is mostly used to create fuel, solvents and antifreeze. D) It is use for human consumption. Show Answer Correct Answer: D) It is use for human consumption. 56. Which of the following cannot be made by using Williamson synthesis A) Benzyl p-nitrophenyl ether. B) Methoxybenzene. C) Di-tert-butyl ether. D) Tert-Butyl methyl ether. Show Answer Correct Answer: C) Di-tert-butyl ether. 57. When CH3CH2Br reacts with sodium acetylide, the main product is:(1) 1-Butyne (2) 1-Butene (3) 2-Butene (4) 2-Butyne A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: A) 1. 58. Which is not present in Grignard reagent? A) Methyl group. B) -COOH group. C) Magnesium. D) Halogen. Show Answer Correct Answer: B) -COOH group. 59. What reagent adds a halogen (X) and alcohol in the Markovnikov, Anti position? A) X2. B) X2 + H2O. C) HX. D) HX + ROOR. Show Answer Correct Answer: B) X2 + H2O. 60. HOW WILL YOU CONVERT PHENOLS INTO BENZENE. A) By reacting it With Zn dust. B) By reacting it With Na dust. C) By reacting it With Cu dust. D) By reacting it With Al dust. Show Answer Correct Answer: A) By reacting it With Zn dust. ← PreviousNext →Related QuizzesScience QuizzesClass 12 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 7Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 8Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books