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Chemistry Worksheets Class 12 on Chapter 11 with Answers - Set 5

Alcohol, phenol and ether are the categories of the hydrocarbons. Alcohol is the class of hydrocarbon having a hydroxy group attached to the aliphatic hydrocarbon chain. In contrast, phenol is the class of hydrocarbon having a hydroxy group attached to the benzene ring. ROH and ArOH, respectively, represent them. On the other hand, ether is the class of hydrocarbon in which the oxygen atom joins two alkyl groups. ROR’ represents it.

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Chemistry Worksheets Class 12 on Chapter 11 with Answers - Set 5
Chemistry Worksheets Class 12 on Chapter 11 with Answers - Set 5

CBSE Class 12 Chemistry Chapter 11 Alcohols, Phenols, and Ethers Worksheet – Set 5

Q1. Iodoform can be used in medicine as an

(a) Anaesthetic

(b) Analgesic

(c ) Antiseptic

(d) None of the above

Q2. Which of the following compound gives a positive iodoform test?

(a) Formaldehyde

(b) Acetaldehyde

(c ) Methanol

(d) None of the above

Q3. Alkyl halide gives alcohol on hydrolysis with

(a) Aqueous sodium hydroxide

(b) Alcoholic sodium hydroxide

(c ) Both (a) and (b)

(d) None of the above

Q4. The reaction of ethanol and methyl magnesium bromide gives

(a) Methane

(b) Ethane

(c ) Propane

(d) None of the above

Q5. What is the molecular formula of chloral hydrate?

(a) CCl3 CH (OH)2

(b) CCl3 CH2 OH

(c ) CCl3 CH2 COOH

(d) CCl3 CH2 CCl2 OH

Q6. Arrange the following sets of compounds in order of their increasing boiling points.

Pentanol, butanol, butan-2-ol, ethanol, propanol, and methanol

Q7. Arrange the following sets of compounds in order of their increasing boiling points.

Pentanol, n-butane, pentanal, ethoxyethane.

Q8. Give the structures and IUPAC names of monohydric phenols of molecular formula C7H8O.

Q9. Convert chloro benzene to phenol.

Q10. Explain why aniline does not undergo Friedel- Crafts reaction.

Q11. Why is phenol more acidic than alcohol?

Q12. Why are ethers used as a solvent?

Q13. Explain Williamson’s synthesis reaction.

Q14. Why is the C=O bond of alcohol larger than the C=O bond of alcohol?

Q15. What is Kolbe’s reaction?

Q16. Write the mechanism of hydration of ethene to ethanol.

Q17. Why does propanol have a higher boiling point than butane?

Q18. Why are alcohols more soluble in water than hydrocarbons of comparable molecular masses?

Q19. Write the structures of the major products from the following reactions.

(a) Dinitration of 3-methyl phenol

(b) Mononitration of phenyl methanoate.

Q20. Give the structures and IUPAC names of the products from the following reactions:

(a) Catalytic reduction of butanal.

(b) Hydration of propene in the presence of dilute sulphuric acid.

(c) The reaction of propanone with methylmagnesium bromide, followed by hydrolysis.

Download the PDF to access answers to the Chemistry Worksheet for Class 12 Chemistry Chapter 11 Alcohols, Phenols, and Ethers Set -5.
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