This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Chemistry Part Ii > Class 12 Chemistry (Part Ii) Chapter 11 Alcohols – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 11 Alcohols Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Ethanol and Methanol are soluble in water due to A) Covalent bond. B) Hydrogen bond. C) Van der Waal's forces. D) Electrovalent forces. Show Answer Correct Answer: B) Hydrogen bond. 2. Monochlorination of toluene in sunlight followed by hydrolysis with aq. NaOH yields ..... A) 2, 4-Dihydroxytoluene. B) O-Cresol. C) P-Cresol. D) Benzyl alcohol. Show Answer Correct Answer: D) Benzyl alcohol. 3. Among the Alkenes which one produces tertiary butyl alcohol on acid hydration A) CH$_{3}$CH=CH$_{2}$. B) (CH$_{3}$)$_{2}$C=CH$_{2}$. C) CH$_{3}$CH$_{2}$CH=CH$_{2}$. D) CH$_{3}$CH=CHCH$_{3}$. Show Answer Correct Answer: B) (CH$_{3}$)$_{2}$C=CH$_{2}$. 4. What type of organic product is formed from the oxidation of a secondary alcohol? A) Aldehyde. B) Ketone. C) Carboxylic acid. D) Alkene. Show Answer Correct Answer: B) Ketone. 5. Haloalkanes are more reactive than the corresponding alkanes because A) Haloalkanes are ionic compounds. B) The size of the halogen atoms is bigger. C) Haloalkanes are more soluble in water. D) Haloalkanes are polar compounds. Show Answer Correct Answer: D) Haloalkanes are polar compounds. 6. The correct increasing order of the reactivity of halides for SN1 reaction is: A) 4) CH2=CH-CH2-X < Ph-CH2-X < (CH3 )2CH-X < CH3-CH2-X. B) 3) PhCH2-X < (CH3 )2CH-X < CH3-CH2-X < CH2 == CH-CH2-X. C) (2) (CH3 )2CH-X < CH3-CH2-X < CH2 == CH-CH2X < PhCH2-X. D) (1) CH3-CH2-X < (CH3 )2CH-X < CH2 == CH-CH2-X < PhCH2-X. Show Answer Correct Answer: D) (1) CH3-CH2-X < (CH3 )2CH-X < CH2 == CH-CH2-X < PhCH2-X. 7. Tert-Butyl methy ether on heating with HI gives a mixture of A) Tert-butyl alcohol and methyl iodide. B) Tert-butyl iodide and methanol. C) Isobutylene and methyl iodide. D) Isobutylene and methanol. Show Answer Correct Answer: B) Tert-butyl iodide and methanol. 8. Find out the major product when 2-Butanol is treated with Conc. H$_{2}$SO$_{4}$: A) 1-Butene. B) 2-Butyl Hydrogen Sulphate. C) 2-Butene. D) None of the above. Show Answer Correct Answer: C) 2-Butene. 9. An alcohol X when treated with hot cone. H2SO4 gave an alkene Y with formula C4H8. This alkene on ozonolysis gives single product with molecular formula C2H4O. The alcohol is A) 2-methylpropan-1-ol. B) 2, 2-dimethylbutynal-1-oI. C) Butan-1-ol,. D) Butan-2-ol. Show Answer Correct Answer: D) Butan-2-ol. 10. When ethanol is heated with potassium dichromate and one other reagent a reaction occurs. which of the following is true about that? A) The other reagent is sulfuric acid. B) The product of the reaction is ethene. C) This is an example of a displacement reaction. D) Color change occurs in the reaction from green to Orange. Show Answer Correct Answer: A) The other reagent is sulfuric acid. 11. Alkyl halide formation from primary alcohols follow ..... mechanism A) SN1. B) SN2. C) E2. D) E1. Show Answer Correct Answer: B) SN2. 12. Acid catalysed dehydration of t-butanol is faster than that of n-butanol because A) T-butanol has a higher boiling point. B) Tertiary carbocation is more stable than primary carbocation. C) Primary carbocation is more stable than tertiary carbocation. D) Rearrangement takes place during dehydration of t-butanol. Show Answer Correct Answer: B) Tertiary carbocation is more stable than primary carbocation. 13. Which of the following compound is commonly used as cationic surfactant in fabric softening A) Tertiary amine. B) Primary amine. C) Quaternary ammonium salt. D) Amide. Show Answer Correct Answer: C) Quaternary ammonium salt. 14. Acidified potassium dichromate will turn: A) Orange-green. B) Green-orange. C) Blue-brick red. D) Brick red-blue. Show Answer Correct Answer: A) Orange-green. 15. Which statement is true about ethanol? A) It is formed by the oxidation of ethanoic acid. B) It reacts with ethyl ethanoate to form anacid. C) It is formed by the catalytic addition of steam to ethene. D) It is an unsaturated compound. Show Answer Correct Answer: C) It is formed by the catalytic addition of steam to ethene. 16. The simplest cyclic alcohol A) Resorcinol. B) Phenol. C) Cyclopentanol. D) Cyclohexanol. Show Answer Correct Answer: B) Phenol. 17. The solubility of alcohols in water is governed by- A) Their ability to form hydrogen bonds with water. B) The size of alkyl groups. C) Both. D) None of the above. Show Answer Correct Answer: C) Both. 18. Vinegar is represented as A) CH3CH2COOH. B) HCOOH. C) CH3CH2CH2COOH. D) CH3COOH. Show Answer Correct Answer: D) CH3COOH. 19. General formula of carboxylic acids is: A) C$_{n}$H$_{2n+2}$COOH. B) C$_{n}$H$_{2n+1}$OH. C) C$_{n}$H$_{2n+1}$COOH. D) C$_{n}$H$_{2n}$COOH. Show Answer Correct Answer: C) C$_{n}$H$_{2n+1}$COOH. 20. Which of the following reactions do not involve the oxidation of ethanol? A) Production of ethanol from fermentation of glucose. B) Heating ethanol with Potassium (vi) dichromate in dilute sulphuric acid. C) The reaction of ethanol with Oxygen in the air. D) Formation of carbon dioxide and water from the complete combustion of ethanol. Show Answer Correct Answer: A) Production of ethanol from fermentation of glucose. 21. Ethanol is treated with I$_{2}$ and Phosphorus to give a compound A. A is treated with Magnesium in ether to give B. B is treated with Methanal to give C. C is treated with water to give D. What is D? A) Butanal. B) N-propyl alcohol. C) Butanol. D) N-butyl alcohol. E) Propanol. Show Answer Correct Answer: B) N-propyl alcohol. 22. What is formed in situ when NaBr and H$_{2}$SO$_{4}$ react with an alcohol A) Na$_{2}$SO$_{4}$. B) HBr. C) BrSO$_{4}$. D) None of the above. Show Answer Correct Answer: B) HBr. 23. IUPAC name of the compound is ..... A) Isopropylmethyl ether. B) 2-methoxy-2-methylethane. C) 2-methoxypropane. D) 1-methoxy-1-methylethane. Show Answer Correct Answer: D) 1-methoxy-1-methylethane. 24. When the mixture of ethanol and reagent X is heated under reflux, chloroethane if formed. Which of the following reagent could be reagent X?i. PCl$_{3}$ii. Cl$_{2}$iii. KCl A) I only. B) I and ii. C) Ii and iii. D) I, ii and iii. Show Answer Correct Answer: A) I only. 25. What happens when tertiary alcohol is treated with Cu and 573K ..... ? A) Ketone. B) Carboxylic acid. C) Ethene. D) Aldehyde. Show Answer Correct Answer: C) Ethene. 26. Which of the following is a functional group isomer of propanol A) Propan-2-ol. B) Methoxy ethane. C) Propanal. D) Propanone. Show Answer Correct Answer: B) Methoxy ethane. 27. What is the product obtained when phenylmethyl ether is heated with hydrogen iodide? A) Chloroethane. B) Benzene. C) Ethanol. D) Iodobenzene. E) Phenol. Show Answer Correct Answer: E) Phenol. 28. The class of compounds containing C=O are called A) Aldehydes. B) Ketones. C) Carbonyl Compounds. D) None of the Above. Show Answer Correct Answer: C) Carbonyl Compounds. 29. Phenol on treatment with diethyl sulphate in the presence of sodium hydroxide gives what? A) Phenate. B) Diethyl ether. C) Anisole. D) Diphenyl ether. Show Answer Correct Answer: C) Anisole. 30. (9.16) Nucleophilic attack occurs on the less substituted Carbon, what are the reactants A) Acid. B) Nucleophile. C) Both. D) None. Show Answer Correct Answer: C) Both. 31. Name two products formed when 2-methoxy 2-methylpropane is reacted with HI A) T-butanol and ethyl iodide. B) T-butanol and methanol. C) T-butanol and methyl iodide. D) T-butyl iodide and methanol. Show Answer Correct Answer: D) T-butyl iodide and methanol. 32. Which of the following compound will have only primary and secondary carbon A) Propane. B) 2, 2, 3-trimethylpentane. C) 2-methylpropane. D) None of the above. Show Answer Correct Answer: A) Propane. 33. Potassium dichromate K$_{2}$Cr$_{2}$O$_{7}$ is an example of: A) A reducing agent. B) An elimination reagent. C) An oxidising agent. D) An addition reagent. Show Answer Correct Answer: C) An oxidising agent. 34. Answer true or false to the following statement. Ethers are used as solvents and in medicine as inhalation anesthetics. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 35. Methyl alcohol is not used A) For denaturing of ethyl alcohol. B) As a solvent. C) As a substitute for petrol. D) Antifreezing agent. Show Answer Correct Answer: C) As a substitute for petrol. 36. Explain the significance of the ether functional group in organic chemistry. A) Ethers are primarily used as catalysts in chemical reactions. B) Ethers are significant for their strong hydrogen bonding capabilities. C) Ethers are important for their stability, low reactivity, and use as solvents in organic reactions. D) Ethers are highly reactive and unstable compounds in organic chemistry. Show Answer Correct Answer: C) Ethers are important for their stability, low reactivity, and use as solvents in organic reactions. 37. What chemical is used to test for phenols? A) Iron chloride. B) Iron (III) chloride. C) Iron (II) chloride. D) Phenoxide. Show Answer Correct Answer: B) Iron (III) chloride. 38. Some countries color denatured alcohol as a label. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 39. Among nitrophenols: A) M-Nitrophenol is the most acidic. B) O-Nitrophenol is the most acidic. C) P-Nitrophenol is the most acidic. D) None of the above. Show Answer Correct Answer: C) P-Nitrophenol is the most acidic. 40. (9.15) Thiols are oxidized into disulfides (RSSR) with ..... and are reduced back into thiols with ..... A) Ox:Br2, ZnRed:I2, Acids. B) Ox:Br2, AcidsRed:I2, Zn. C) Ox:Acids, ZnRed:Br2, I2. D) Ox:Br2, I2Red:Zn, Acids. Show Answer Correct Answer: D) Ox:Br2, I2Red:Zn, Acids. 41. Assertion:Ethers behave as bases in the presence ofmineral acids.Reason:Due to the presence of lone pairs of electrons onoxygen. A) Assertion is incorrect, reason is correct. B) Assertion is correct, reason is correct; reason is a correctexplanation for assertion. C) Assertion is correct, reason is incorrect. D) Assertion is correct, reason is correct; reason is not acorrect explanation for assertion. Show Answer Correct Answer: B) Assertion is correct, reason is correct; reason is a correctexplanation for assertion. 42. To convert propene into propan-1-ol which method cant be used? A) Acid catalysed hydration. B) Hydroboration oxidation. C) Reaction with HBr in presence of peroxide followed by reaction with aq.NaOH. D) All methods can be used. Show Answer Correct Answer: A) Acid catalysed hydration. 43. Ethanediol has a higher boiling point than ethanol. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 44. Assertion:In Lucas test, 3$^\circ$ alcohols react immediately.Reason:An equimolar mixture of anhyd. ZnCl2 and conc.HCl is called Lucas reagent. A) Assertion is correct, reason is incorrect. B) (d) Assertion is incorrect, reason is correct. C) Assertion is correct, reason is correct; reason is not acorrect explanation for assertion. D) Assertion is correct, reason is correct; reason is a correctexplanation for assertion. Show Answer Correct Answer: C) Assertion is correct, reason is correct; reason is not acorrect explanation for assertion. 45. Why are phenols more acidic than alcohols? A) Phenoxide ion is stablised by resonance. B) Phenols are more soluble in polar solvents. C) Phenoxide ion does not exhibit resonance. D) Alcohols do not lose H atoms at all. Show Answer Correct Answer: A) Phenoxide ion is stablised by resonance. 46. An alcoholic solution of a medication is called an A) Mercaptan. B) Emulsion. C) Isotope. D) Tincture. Show Answer Correct Answer: D) Tincture. 47. The process of converting alkyl halides into alcohols involves ..... A) Addition reaction. B) Rearrangement reaction. C) Substitution reaction. D) Dehydrohalogenation reaction. Show Answer Correct Answer: C) Substitution reaction. 48. What compound would you produce if you oxidized a primary Alcohol? A) Aldehyde. B) Ester. C) Ketone. D) Halogenalkane. Show Answer Correct Answer: A) Aldehyde. 49. Answer true or false to the following statement. The functional group of an ether is an atom of oxygen bonded to two carbon atoms. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 50. Lucas reagent is:(1) anhy. ZnCl2 and NH3 (2) anhy. ZnCl2 and CaCl2 (3) anhy. ZnCl2 and conc. HCl (4) anhy. ZnCl2 and HCl gaS A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: C) 3. 51. Assertion:Ethers do not possess-OH groups and do not form any type of hydrogen bondingReason:Ethers contain hydrogen, directly bonded to oxygen A) If both Assertion and Reason are correct and Reason is the correct explanation of the Assertion. B) If both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion. C) If Assertion is correct but Reason is incorrect. D) If Assertion is incorrect but Reason is correct. Show Answer Correct Answer: C) If Assertion is correct but Reason is incorrect. 52. Which of the following is used as antifreeze in car radiators? A) Glycol. B) Glycerol. C) Propanol. D) Ethanol. Show Answer Correct Answer: A) Glycol. 53. All the members of alcohol homologous series have similar chemical properties. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 54. An organic compound X on treatment with PCC in dichloromethane gives compound Y. Compound Y reacts with I2 and alkali to form triiodomethane. The compound X is A) CH$_{3}$COCH$_{3}$. B) CH$_{3}$CH$_{2}$OH. C) CH$_{3}$COOH. D) CH$_{3}$CHO. Show Answer Correct Answer: B) CH$_{3}$CH$_{2}$OH. 55. Why ethanol is prepared in anaerobic conditions A) Ethanol is oxidised to ether. B) Ethanol is oxidised to ethanoic acid. C) Ethanol is more reactive. D) Ethanol is oxidised to ethanal. Show Answer Correct Answer: B) Ethanol is oxidised to ethanoic acid. 56. The enzyme that converts sucrose to glucose and fructose is A) Maltase. B) Invertase. C) Zymase. D) Diastase. Show Answer Correct Answer: B) Invertase. 57. An unknown alcohol is treated with "Lucas reagent" to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism? A) Tertiary alcohol by SN1. B) Secondary alcohol by SN1. C) Secondary alcohol by SN2. D) Tertiary alcohol by SN2. Show Answer Correct Answer: A) Tertiary alcohol by SN1. 58. Assertion:Sucrose is called an invert sugar.Reason:On hydrolysis, sucrose bring the change in thesign of rotation from dextro (+) to laevo(-). A) Assertion is incorrect, reason is correct. B) Assertion is correct, reason is incorrect. C) Assertion is correct, reason is correct; reason is not acorrect explanation for assertion. D) Assertion is correct, reason is correct; reason is a correctexplanation for assertion . Show Answer Correct Answer: D) Assertion is correct, reason is correct; reason is a correctexplanation for assertion . 59. (9.17-9.18) What is used to treat asthma A) Zileuton. B) Benzo[a]pyrene. C) All the above. D) None of the above. Show Answer Correct Answer: A) Zileuton. 60. Which of the following compounds is also called carbolic acid? A) Methanol. B) Acetic acid. C) Phenol. D) Picric acid. Show Answer Correct Answer: C) Phenol. ← 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 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books