Organic Chemistry is a most important subject for NEET, JEE, AIIMS exam. It is a foundation for most of the Life Sciences and pharmacy courses. These Alcohol Phenol And Ether MCQ questions will help you to learn the Organic chemistry in a better way for Medical entrance exams. Alcohol Phenol And Ether MCQ is provided here with explanatory answers.
Alcohol Phenol And Ether MCQ
These Alcohol Phenol And Ether MCQs contains the following topics:
Alcohol Phenol And Ether MCQs
1. In CH3 CH2 OH, the bond that undergoes heterolytical change most readily is
a) C-C
b) C-O
c) C-H
d) O-H
Answer: O-H
2. In the reaction of phenol with CHCl3 and aqueous NaOH at 343 K, the electrophile attacking the ring is:
a) CHCl3
b) CHCl2
c) CCl2
d) COCl2
Answer: CCl2
3. Which of the following is most acidic?
a) Phenol
b) Benzyl alcohol
c) m-chlorophenol
d) cyclohexanol
Answer: m-chlorophenol
4. When Phenol is distilled with zinc dust, it gives
a) Benzene
b) Toluene
c) Benzaldehyde
d) Benzoic acid
Answer: Benzene
5. Which of the following cannot be made by using Williamson Synthesis:
a) Methoxybenzene
b) Benzyl p-nitrophenyl ether
c) tert. butyl methyl ether
d) Ditert. butyl ether
Answer: Ditert. butyl ether
6. Ethers are
a) Neutral
b) Basic
c) Acidic
d) Amphoteric
Answer: Basic
7. Among the following, the one which reacts most readily with ethanol is
a) p-Nitrobenzyl bromide
b) p-Chlorobenzyl bromide
c) p-methoxybenzyl bromide
d) p-methyl benzyl bromide.
Answer: p-methoxybenzyl bromide
8. tert-Butyl methyl 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.
Answer: tert-Butyl iodide and methanol
9. An ether is more volatile than alcohol having the same molecular formula. This is due to
a) intermolecular hydrogen bonding in alcohols.
b) dipolar character of ethers
c) alcohols, having resonance structures
d) intermolecular hydrogen bonding in ethers.
Answer: intermolecular hydrogen bonding in alcohols.
10. Wood spirit is known as acetone
a) methanol
b) ethanol
c) acetone
d) benzene
Answer: methanol
11. The product of acid catalysed hydration of 2-phenylpropene is
a) 3-Phenyl-2-propanol
b) 1-Phenyl-2-propanol
c) 2-phenyl-2-propanol
d) 2-phenyl-1-propanol.
Answer: 3-Phenyl-2-propanol
12. Acid-cataylysed hydration of alkenes except ethene leads to the formation of
a) primary alcohol
b) secondary or tertiary alcohol
c) mixture of primary and secondary alcohols.
d) mixture of secondary and tertiary alcohols.
Answer: secondary or tertiary alcohol
13. During dehydration of alcohols to alkenes by heating with cone. H2SO4 the initial step is
a) formation of an ester
b) protonation of alcohol molecule
c) formation of carbocation
d) elimination of water
Answer: protonation of alcohol molecule
14. Which compound reacts with propene to form tripropyl borane?
a) Borane
b) Diborane
c) Boric acid
d) Sodium borohydride
Answer: Diborane
15. Which of the following is not required for the conversion of trialkyl borane to an alcohol?
a) Diborane
b) Water
c) Sodium hydroxide
d) Hydrogen peroxide
Answer: Diborane
16. What happens when an aldehyde is treated with lithium aluminium hydride?
a) Primary alcohol is formed
b) Secondary alcohol is formed
c) Tertiary alcohol is formed
d) No reaction
Answer: Primary alcohol is formed
17. Which carbonyl compound yields secondary alcohols when treated with LiAlH4?
a) Aldehyde
b) Ketone
c) Carboxylic acid
d) Ester
Answer: Ketone
18. Hydrolysis of the adduct formed form the reaction of ________ with methyl magnesium bromide gives 2-Methylpropan-2-ol.
a) Methanal
b) Ethanal
c) Propanal
d) Propanone
Answer: Propanone
19. Which of the following aldehydes can produce 1o alcohols when treated with Grignard reagent?
a) Methanal
b) Ethanal
c) Propanal
d) Butanal
Answer: Methanal
20. How are alcohols prepared from haloalkanes?
a) By treating with concentrated H2SO4
b) By heating with aqueous NaOH
c) By treating with a strong reducing agent
d) By treating with Mg metal
Answer: By heating with aqueous NaOH
21. Which of the following process do not yield alcohols?
a) Acid catalysed hydration of alkenes
b) Hydroboration-oxidation of alkenes
c) Reduction of aldehydes
d) Free radical halogenation of alkanes
Answer: Free radical halogenation of alkanes
22. Identify the catalyst in the hydration of alkenes to produce alcohols.
a) HCl
b) FeCl3
c) Pt
d) Ni
Answer: HCl
23. Phenol can be obtained by ________ of sodium phenoxide.
a) acidification
b) oxidation
c) sulphonation
d) hydrolysis
Answer: acidification
24. Cumene hydroperoxide on hydrolysis with dilute H2SO4 gives _________
a) alcohol and phenol
b) only phenol
c) phenol and acetone
d) alcohol and acetone
Answer: phenol and acetone
25. How is carbolic acid prepared from benzene diazonium chloride?
a) Treating it with nitrous acid at 275K
b) Preparing an aqueous solution and warming it
c) Treating it with sodium hydroxide
d) Freezing it
Answer: Preparing an aqueous solution and warming it
26. Which of the following isomeric alcohols is the most soluble in water?
a) n-Butyl alcohol
b) Isobutyl alcohol
c) sec-Butyl alcohol
d) tert-Butyl alcohol
Answer: tert-Butyl alcohol
27. Which of the following is the least soluble in water?
a) n-Butyl alcohol
b) n-Pentyl alcohol
c) n-Hexyl alcohol
d) n-Heptyl alcohol
Answer: n-Heptyl alcohol
28. Which of the following is necessary for the bromination of phenol?
a) CS2
b) FeBr3
c) AlCl3
d) BF3
Answer: CS2
29. Phenol is approximately how much times acidic than ethanol?
a) 10
b) 25
c) 100
d) million
Answer: million
30. Phenols are not soluble in which of the following?
a) Water
b) Alcohol
c) Ether
d) Sodium hydroxide
Answer: Water
31. What is the correct order of boiling points of alcohols having the same number of carbon atoms?
a) 1°>2°>3°
b) 3°>2°>1°
c) 3°>1°>2°
d) 2°>1°>3°
Answer: 1°>2°>3°
32. Four compounds A, B, C and D having 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 the compound C most likely to be?
a) Hydrocarbon
b) Haloalkane
c) Alcohol
d) Ether
Answer: Alcohol
33. If the boiling point of methoxymethane is 248K, predict the boiling point of ethanol.
a) 231K
b) 248K
c) 351K
d) 455K
Answer: 351K
34. Which of the following has the highest boiling point?
a) Propan-1-ol
b) Butan-1-ol
c) Butan-2-ol
d) Pentan-1-ol
Answer: Pentan-1-ol
34. Which of the following is not a polyhydric alcohol?
a) Cyclohexanol
b) Ethylene glycol
c) Propylene glycol
d) Benzene-1,2-diol
Answer: Cyclohexanol
36. Which of the following is an incorrect name for the compound with aromatic ring having hydroxyl groups at para positions?
a) Hydroquinone
b) Benzene-1,4-diol
c) Resorcinol
d) Quinol
Answer: Resorcinol
37. What is the common name of the simplest hydroxy derivative of benzene?
a) Phenol
b) Cresol
c) Cyclohexanol
d) Glycerol
Answer: Phenol
38. Which of the following phenols is not dihydric?
a) p-Cresol
b) Catechol
c) Resorcinol
d) Quinol
Answer: p-Cresol
39. According to IUPAC, what is the suffix used for naming alcohols?
a) -al
b) -ol
c) -one
d) -OH
Answer: -ol
40. Which of the following compounds contain an aryl carbon?
a) Ethanol
b) Benzyl alcohol
c) Vinyl alcohol
d) Phenol
Answer: Phenol
Alcohol Phenol And Ether MCQs PDF Download
FAQs on Alcohol Phenol And Ether
What are the uses of alcohol phenol and ether?
Alcohols are the precursor compounds to phenols that are used in the formation of laundry detergents. Ethers and phenols can be used to aerosol antibacterial products, while alcohol is commonly used in cleaning fluids, cosmetics and pharmaceuticals.
Is alcohol a ether?
Ethers and alcohols might seem like they’re worlds apart, but they’re actually quite similar in structure. That’s because ethers and alcohols both have the same oxygen-hydrogen (O-H) bond arrangement as water.
Does phenol react with alcohol?
Phenol reacts with alcohols to give a mixture of C- and 0-alkylated products under the same reaction conditions. 0-alkylation and C-alkylation are parallel reactions.
Is phenol and alcohol same?
Phenols also contain a hydroxyl group linked directly to a ring. The difference between a phenol and an alcohol is that the oxygen-hydrogen of an alcohol is attached to carbon in the main chain, whereas in phenol it is directly linked to the ring. And the ring in phenol is aromatic, while it is not in alcohols.
What are the uses of alcohol?
Alcohol with a low concentration of methanol or ethanol can be used as a fuel. By itself it is nearly useless, but when mixed with gasoline (petrol) it can make the fuel burn cleaner (similar to how leaded petrol worked in the past to make combustion more efficient). Of course this is only practical if the alcohol is cheaper than the gasoline or other fuels, because you are essentially storing fuel in your tank instead of using it at the same time.
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