Alcohol Phenol and Ether MCQ for NEET pdf
Alcohol Phenol and Ether MCQ for NEET pdf
Que 1. Arrange the following compounds in increasing order of boiling point.
Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol:
(a) Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol
(b) Pentan-1-ol, butan-2-ol, butan-1-ol, propan-1-ol
(c) Pentan-1-ol, butan-1-ol, butan-2-ol, propan-1-ol
(d) Propan-1-ol, butan-2-ol, butan-1-ol, pentan-1-ol
Ans 1. (d) Propan-1-ol, butan-2-ol, butan-1-ol, pentan-1-ol
Que 2. Phenol is less acidic than ______________.
(a) Methanol
(b) p-methylphenol
(c) o-nitrophenol
(d) o-methoxyphenol
Ans 2. (c) o-nitrophenol
Que 3. Which of the following is most acidic?
(a) Benzyl alcohol
(b) Ethanol
(c) Phenol
(d) m-Chlorophenol
Ans 3. (d) m-Chlorophenol
Que 4. Which of the following alcohols gives 2-butene on dehydration by conc. H2SO4?
(a) 2-methyl propene-2-ol
(b) 2-methyl 1 -propanol
(c) Butane-2-ol
(d) Butane 1-ol
Ans 4. (c) Butane-2-ol
Que 5. One mole of ethyl acetate on treatment with an excess of LiAlH4 in dry ether and subsequent acidification produces
(a) 1 mole acetic acid + 1 mole ethyl alcohol
(b) 1 mole ethyl alcohol + 1 mole methyl alcohol
(c) 2 moles of ethyl alcohol
(d) 1 mole of 2-butanol
Ans 5. (c) 2 moles of ethyl alcohol
Alcohol Phenol and Ether MCQ for NEET pdf
Que 6. Which of the following reagents cannot, be used to oxidize primary alcohols to aldehydes?
(a) CrO3 in anhydrous medium
(b) KMnO4 in acidic medium
(c) Pyridinium chlorochromate
(d) Heat in the presence of Cu at 573 K
Ans 6. (b) KMnO4 in acidic medium
Que 7. 1-Phenylethanol can be prepared by the reaction of benzaldehyde with
(a) Methyl bromide
(b) Ethyl iodide and magnesium
(c) Methyl iodide and magnesium
(d) Methyl bromide and aluminium bromide
Ans 7. (c) methyl iodide and magnesium (Grignard reagent’s).
Que 8. Which of the following alcohols will give the most stable carbocation during dehydration?
(a) 2-methyl-1-propanol
(b) 2-methyl-2-propanol
(c) 1-Butanol
(d) 2-Butanol
Ans 8. (b) 2-methyl-2-propanol
Que 9. A compound X with the molecular formula C2H8O can be oxidised to another compound Y whose molecular formulae is C3H6O2. The compound X may be
(a) CH3CH2OCH3
(b) CH3CH2CHO
(c) CH3CH2CH2OH
(d) CH3CHOHCH3
Ans 9. (c) CH3CH2CH2OH
Que 10. Order of esterification of alcohols are
(a) 3° > 1° > 2°
(b) 2°> 3° > 1°
(c) 1 ° > 2° > 3°
(d) None of these
Ans 10. (c) 1 ° > 2° > 3°
Alcohol Phenol and Ether MCQ for NEET pdf
Que 11. What happens when tertiary butyl alcohol is passed over heated copper at 300°C?
(a) Secondary butyl alcohol is formed
(b) 2-methylpropene is formed
(c) 1-butene is formed
(d) Butanol is formed
Ans 11. (b) 2-methylpropene is formed,
Que 12. Which of the following compounds will be most easily attacked by an electrophile?
Ans 12. (c) phenol
Que 13. CH3CH2OH can be converted into CH3CHO by ______________.
(a) treatment with K2Cr2O7
(b) treatment with LiAlH4
(c) treatment with pyridinium chlorochromate
(d) treatment with KMnO4
Ans 13. (c) treatment with pyridinium chlorochromate
Que 14. What would be the reactant and reagent used to obtain 2, 4-dimethyl pentan-3-ol?
(a) Propanal and propyl magnesium bromide
(b) 3-methylbutanal and 2-methyl magnesium iodide
(c) 2-dimethylpropanone and methyl magnesium iodide
d) 2-methylpropanal and isopropyl magnesium iodide
Ans 14. (d) 2-methylpropanal and isopropyl magnesium iodide
Que 15. The decreasing order of boiling point of the following alcohols is
(a) 3-methylbuan-2-ol > 2-methylbutan-2-ol > pentan-1-ol
(b) Pentan-1-ol > 3-methylbutan-2-ol > 2-methylbutan-2-ol
(c) 2-methylbutan-2-ol > 3-methylbutan-2-ol > pentan-1-ol
(d) 2-methylbutan-2-ol > pental-1-ol > 3-methylbutan-2-ol
Ans 15. (b) Pentan-1-ol > 3-methylbutan-2-ol > 2-methylbutan-2-ol.
Alcohol Phenol and Ether MCQ for NEET pdf
Que 16. Propanone on reaction with alkyl magnesium bromide followed by hydrolysis will produce
(a) Primary alcohol
(b) Secondary alcohol
(c) Tertiary alcohol
(d) Carboxylic acid
Ans 20. (c) Tertiary alcohol
Que 17. 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 SN2
(b) Secondary alcohol by SN1
(c) Tertiary alcohol by SN1
(d) Secondary alcohol by SN2
Ans 17. (c) Tertiary alcohol by SN1
Que 18. The reaction between phenol and chloroform in the presence of aqueous NaOH is known as
(a) Etard reaction
(b) Kolbe’s reaction
(c) Reimer Tiemann reaction
(d) None of above
Ans 18. (c) Reimer Tiemann reaction
Que 19. Benzyl alcohol is obtained from benzaldehyde
(a) Wurtz reaction
(b) Etard reaction
(c) Williamson’s synthesis
(d) Cannizzaro’s reaction
Ans 19. (d) Cannizzaro’s reaction
Que 20. Phenol reacts with Br2 in CS2 at low temperature to give
(a) o-Bromophenol
(b) o-and p-Bromophenol
(c) p-Bromophenol
(d) 2,4,6-Tribromophenol
Ans 20. (b) o-and p-Bromophenol
Alcohol Phenol and Ether MCQ for NEET pdf
Que 21. Phenol on distillation with zinc dust gives
(a) Benzoquinone
(b) Toluene
(c) Benzaldehyde
(d) Benzene
Ans 21. (d) Benzene
Que 22. Ethanol & Phenol can be distinguished by
(a) Dye test
(b) NaHCO3 test
(c) Carbylamine test
(d) Hinsberg’s test
Ans 22. (a) Dye test
Que 23. During esterification water is removed as soon as it is formed:
(a) To shift the equilibrium in forward reaction
(b) To purify the product
(c) To decrease the rate of reaction
(d) None of above
Ans 23. (a) To shift the equilibrium in forward reaction
Que 24. The compound obtained by the reaction of propene with diborane followed by hydrolysis with alkaline H2O2 is
(a) n-propyl alcohol
(b) ethanol
(c) triethyl bromide
(d) None of above
Ans 24. (a) n-propyl alcohol
Que 25. Which one of the following will not form yellow precipitate on heating with an alkaline solution of iodine?
(a) CH3OH
(b) CH3CH2OH
(c) CH3CH2CH(OH)CH3
(d) CH3CH(OH)CH3
Ans 25. (a) CH3OH
Alcohol Phenol and Ether MCQ for NEET pdf
Que 26. Four compounds A, B, C, and D have similar molecular masses were tested for their boiling points. It was found that compound C has the highest boiling point of all four. What is compound C most likely to be?
(a) Alcohol
(b) Haloalkane
(c) Hydrocarbon
(d) Ether
Ans 26. (a) Alcohol
Que 27. What will be the reactant and reaction condition required for the given reaction? CH3CH2OH +? → C2H5OC2H5
(a) H2SO4, 443K
(b) H2SO4, 413K
(c) HNO3, 413K
(d) HNO3, 443K
Ans 27. (b) H2SO4, 413K
Que 28. Williamson synthesis proceed visa which of the following mechanism?
a) SN1
b) SN2
c) E1
d) E2
Ans 28. b) SN2
Que 29. The enzyme which breaks down ethanol in the body
(a) Alcohol dehydrogenase (ADH),
(b) Invertase
(c) Trypsin
(d) None of above
Ans 29. (a) Alcohol dehydrogenase (ADH),
Que 30. Cumene hydroperoxide on hydrolysis with dilute H2SO4 gives
(a) Only phenol
(b) Alcohol and phenol
(c) Alcohol and acetone
(d) Phenol and acetone
Ans 30. (d) Phenol and acetone.
Alcohol Phenol and Ether MCQ for NEET pdf
