Preparation and properties of Alcohol Quiz (25Q)

Alcohols Quiz

00:00

Test your knowledge on the preparation and properties of alcohols for JEE and NEET.

1. The preparation of ethanol from ethene involves which type of reaction?

• Nucleophilic substitution
• Electrophilic addition
• Elimination
• Oxidation

2. What is the product of the reaction between propan-1-ol and a concentrated solution of sulfuric acid at $443~K$?

• Propene
• Propane
• Propyl hydrogen sulfate
• Propanone

3. The boiling points of alcohols are higher than those of corresponding alkanes due to:

• High molecular mass
• Hydrogen bonding
• Ionic character
• Dipole-dipole interactions

4. Which of the following is the most acidic?

• Water ($H_2O$)
• Ethanol ($CH_3CH_2OH$)
• 2-Methylpropan-2-ol
• Methanol ($CH_3OH$)

5. The reaction of alcohol with PCl5 gives:

• Alkane
• Haloalkane
• Aldehyde
• Ether

6. The oxidation of a primary alcohol with PCC (Pyridinium chlorochromate) gives:

• Carboxylic acid
• Ketone
• Aldehyde
• Ether

7. Which of the following is the best reagent for converting a primary alcohol to a carboxylic acid?

• PCC
• KMnO4 / H+
• $CrO_3$
• PCC and then oxidize with mild base

8. The reaction of propan-2-ol with hot copper at $573~K$ gives:

• Propene
• Propanone
• Propanal
• Propyl ether

9. Alcohols can be prepared by the acid-catalyzed hydration of:

• Alkanes
• Alkenes
• Aldehydes
• Ketones

10. The reaction of ethanol with sodium metal produces:

• Sodium ethoxide and hydrogen gas
• Sodium acetate
• Ethene
• Sodium ethanoate

11. Which of the following is the least acidic?

• Methanol ($CH_3OH$)
• Ethanol ($CH_3CH_2OH$)
• Propan-1-ol ($CH_3CH_2CH_2OH$)
• 2-Methylpropan-2-ol ($(CH_3)_3COH$)

12. The Lucas reagent is used to distinguish between:

• Alcohols and Phenols
• Primary, Secondary, and Tertiary alcohols
• Alcohols and Ethers
• Primary and Secondary amines

13. The product of the reaction of an alcohol with a carboxylic acid in the presence of an acid catalyst is:

• Ether
• Ester
• Aldehyde
• Ketone

14. What is the product of the reaction of methanol with methyl magnesium bromide followed by hydrolysis?

• Ethane
• Methane
• Propan-1-ol
• Ethanol

15. The boiling point of alcohols increases with increasing number of carbon atoms. This is due to:

• Increased hydrogen bonding
• Increased Van der Waals forces
• Increased polarity
• Decreased branching

16. The reaction of alcohol with acetyl chloride ($CH_3COCl$) gives:

• Ether
• Ester
• Aldehyde
• Ketone

17. Which of the following is an incorrect method for the preparation of alcohol?

• From Grignard reagent
• From Haloalkanes
• From Alkenes
• From Alkanes

18. The dehydration of a tertiary alcohol requires:

• Concentrated acid and high temperature
• Mild acid and low temperature
• Concentrated base and high temperature
• No catalyst is required

19. Which of the following alcohols will undergo dehydration most easily?

• Primary alcohol
• Secondary alcohol
• Tertiary alcohol
• All will react at the same rate.

20. The final product of the reaction of a primary alcohol with hot Cu at $573~K$ is:

• Alkene
• Aldehyde
• Ketone
• Carboxylic acid

21. Which of the following is the correct order of increasing boiling points?

• Ethanol < Dimethyl ether < Propane
• Propane < Dimethyl ether < Ethanol
• Dimethyl ether < Propane < Ethanol
• Ethanol < Propane < Dimethyl ether

22. The solubility of alcohols in water decreases with an increase in molecular mass. This is due to:

• The increasing size of the alkyl group.
• Decreased hydrogen bonding.
• Increased polarity.
• Decreased Van der Waals forces.

23. What is the major product of the reaction between 2-methylprop-1-ene and water in the presence of an acid catalyst?

• 2-Methylpropan-1-ol
• 2-Methylpropan-2-ol
• Butan-1-ol
• Butan-2-ol

24. The reaction of alcohol with thionyl chloride ($SOCl_2$) is called:

• Wurtz reaction
• Darzen\'s process
• Kolbe\'s reaction
• Friedel-Crafts reaction

25. Which of the following is the correct product when ethanol is oxidized with acidified $K_2Cr_2O_7$?

• Ethanal
• Ethanoic acid
• Ethene
• Diethyl ether

Quiz Results