Alcohal, Phenol and Ether
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Questions and Answers

What is the main reason for the relatively low reactivity of ethers towards electrophilic substitution reactions?

  • The difficulty in forming a carbocation intermediate (correct)
  • The presence of a resonating methyl group
  • The high electronegativity of the oxygen atom
  • The steric hindrance caused by the methyl group

    • Which of the following is a product of the Friedel-Craft's reaction between anisole and methyl chloride?

  • Ortho-methyl anisole
  • p-Methoxy acetophenone
  • o-Methoxy acetophenone (correct)
  • Para-methyl anisole

    • What is the byproduct of the Pinacol-pinacolone rearrangement reaction?

  • Ethanol
  • Methanol
  • Water (correct)
  • Acetone

    • Which of the following is a correct order of acid strength?

    <p>HCOOH &gt; CH3COOH &gt; (CH3)2CH – COOH &gt; (CH3)C – COOH</p> Signup and view all the answers

    What is the product of the nitration reaction of anisole?

    <p>Methyl-2 nitrophenyl ether</p> Signup and view all the answers

    What type of reaction is favored when ethyl hydrogen sulphate is formed?

    <p>Electrophilic substitution</p> Signup and view all the answers

    Which of the following reactions involves the cleavage of a carbon-oxygen bond?

    <p>Hydrolysis</p> Signup and view all the answers

    What is the product of the reaction between anisole and bromine in the presence of a catalyst?

    <p>Ortho and para bromo derivatives</p> Signup and view all the answers

    What is the byproduct of the reaction between phenyl ethyl ether and hydroiodic acid?

    <p>Ethyl alcohol</p> Signup and view all the answers

    What is the role of conc. H2SO4 in the reaction with diethyl ether?

    <p>It acts as a reactant</p> Signup and view all the answers

    Which of the following statements is true about compounds III, IV, and V?

    <p>They show high electron density at ortho and para position</p> Signup and view all the answers

    What is the major product formed when CH3 and CH3Cl react with AlCl3?

    <p>p-Cresol</p> Signup and view all the answers

    Why do AlCl3 and phenol give poor yields in Friedel-Crafts reaction?

    <p>Due to the formation of a complex between AlCl3 and phenol</p> Signup and view all the answers

    What is the by-product formed when phenol reacts with AlCl3?

    <p>HCl</p> Signup and view all the answers

    What is the product formed when phenol reacts with acetyl chloride in the presence of AlCl3?

    <p>o-Hydroxy acetophenone</p> Signup and view all the answers

    What is the product formed when phenol reacts with CO and NaOH in the presence of AlCl3?

    <p>Salicylic acid</p> Signup and view all the answers

    What is the reaction known as when phenol reacts with liquid hydrogen cyanide and hydrochloric acid gas in the presence of AlCl3?

    <p>Gattermann's reaction</p> Signup and view all the answers

    What is the product formed when a carbonyl compound is a ketone?

    <p>3° alcohol</p> Signup and view all the answers

    What is the correct order of acidic nature of compounds?

    <p>HOH &gt; ROH &gt; CH ≡ CH &gt; NH3 &gt; RH</p> Signup and view all the answers

    What is the effect of increasing alkyl groups on the –OH bonded carbon?

    <p>Decreases the acidic nature of the alcohol</p> Signup and view all the answers

    What is the catalyst used in the oxo process?

    <p>Cobalt carbonyl hydride</p> Signup and view all the answers

    What is the product of Meerwein-Ponndorff verley reduction?

    <p>Alcohol</p> Signup and view all the answers

    What is the correct order of reactivity of alcohols towards C–O cleavage?

    <p>Tertiary &gt; Secondary &gt; Primary</p> Signup and view all the answers

    What is the reason for the solubility of lower alcohols in water?

    <p>Due to the hydrogen bonding between the OH group and water</p> Signup and view all the answers

    What is the product formed when an alkene undergoes hydroformylation?

    <p>Aldehyde</p> Signup and view all the answers

    What is the product formed when an ester undergoes alkaline hydrolysis?

    <p>Alcohol</p> Signup and view all the answers

    What is the effect of increasing the size of the alkyl group on the solubility of alcohols in water?

    <p>Decreases the solubility of alcohols in water</p> Signup and view all the answers

    What is the characteristic of monohydric alcohols?

    <p>They are neutral</p> Signup and view all the answers

    What is the reason for the polar character of the OH group in alcohols?

    <p>Due to the higher electronegativity of oxygen</p> Signup and view all the answers

    What is the product of oxidation of a 1° alcohol using Jones reagent?

    <p>Aldehyde</p> Signup and view all the answers

    What is the effect of MnO2 on allylic and benzylic alcohols?

    <p>Oxidation to aldehyde</p> Signup and view all the answers

    What is the product of oxidation of a 2° alcohol using Jones reagent?

    <p>Ketone</p> Signup and view all the answers

    What is the product of catalytic oxidation of a 1° alcohol?

    <p>Aldehyde</p> Signup and view all the answers

    What is the reactivity order of alcohols towards oxidation?

    <p>3° is resistant to oxidation</p> Signup and view all the answers

    What is the product of oxidation of a 3° alcohol using a strong oxidizing agent?

    <p>Ketone</p> Signup and view all the answers

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