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Chemistry Worksheets Class 12 on Chapter 11 with Answers - Set 4

Alcohol, Phenol and ether are the classes of hydrocarbons. When an OH group is attached to an aliphatic hydrocarbon chain, it is referred to as alcohol. If an OH group is attached to the benzene ring, it is referred to as phenol. At the same time, if an oxygen atom joins the two alkyl groups, it is referred to as Ether. Alcohol, phenol and ether have the general formula ROH, ArOH and ROR’, respectively.

Download Class 12 Chemistry Worksheet on Chapter 11 Alcohols, Phenols, and Ethers PDF – Set 4

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Chemistry Worksheets Class 12 on Chapter 11 with Answers - Set 4
Chemistry Worksheets Class 12 on Chapter 11 with Answers - Set 4

CBSE Class 12 Chemistry Chapter 11 Alcohols, Phenols, and Ethers Worksheet – Set 4

Q1. What is the chemical name of picric acid?

(a) 2, 4, 6-tribromo phenol

(b) 2, 4, 6-trinitro phenol

(c ) 2, 4, 6-trifluoro phenol

(d) None of the above

Q2. Acid-catalysed dehydration of tertiary butanol is more rapid than n-butanol because

(a) Primary carbocation is more stable than the tertiary carbocation

(b) Tertiary carbocation is more stable than the primary carbocation

(c ) Rearrangement takes place in tertiary butanol dehydration

(d) Rearrangement takes place in n-butanol dehydration

Q3. What happens when phenol reacts with bromine in CS2 at low temperatures?

(a) ortho and para Bromo phenols are formed

(b) para and meta Bromo phenols are formed

(c ) ortho Bromo phenol is formed

(d) meta Bromo phenol is formed

Q4. What is the IUPAC name of CH2 = CH-CH2 O CH3?

(a) 3- Methoxy -1- propene

(b) 1- Methoxy -2- propene

(c ) Vinyl dimethyl ether

(d) None of the above

Q5. What happens when ethylene reacts with Baeyer’s reagent?

(a) Ethyl chloride

(b) Ethylene glycol

(c ) Ethyl bromide

(d) None of the above

Q6. Organise the following hydrocarbons in increasing ranking of their boiling point.

CH3CH2OH, CH3-O-CH3 and CH3CHO.

Q7. Organise the following hydrocarbons in increasing order of their acidic character.

CH3CH2OH, C6H5OH and H2O.

Q8. Why is alkoxide a more potent base than hydroxide?

Q9. Convert propene to propan-2-ol.

Q10. How can you distinguish between ethanol and phenol?

Q11. What is the hydroboration-oxidation reaction?

Q12. What will happen when benzene diazonium chloride is heated with water?

Q13. Why is the dipole moment of phenol lesser than the methanol?

Q14. Why is para nitrophenol more acidic than phenol?

Q15. Why is ortho nitrophenol more acidic than ortho methoxy phenol?

Q16. Why is the boiling point of ether less than the corresponding isometric alcohol?

Q17. Describe the Reimer Tiemann reaction.

Q18. Give the equations of reactions for the preparation of phenol from cumene.

Q19. Present two reactions that display the acidic character of phenol. Analogise the acidity of phenol with ethanol.

Q20. Why does aniline not undergo Friedel- Crafts reaction?

Download the PDF to access answers to the Chemistry Worksheet for Class 12 Chemistry Chapter 11 Alcohols, Phenols, and Ethers Set -4.
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