Alcohol, phenol, and ether are the categories of organic compounds that originate from the hydrocarbons. Alcohols are aliphatic hydrocarbons, in which the hydroxyl group replaces one of the hydrocarbon hydrogen atoms. It has a general formula ROH. At the same time, phenol is benzene, in which one of the benzene’s hydrogen is replaced by the hydroxyl group. It has a general formula of C6H5OH. In contrast, ether is the hydrocarbon in which the oxygen atom joins two alkyl groups.
Download Class 12 Chemistry Worksheet on Chapter 11 Alcohols, Phenols, and Ethers PDF – Set 3
CBSE Class 12 Chemistry Chapter 11 Alcohols, Phenols, and Ethers Worksheet – Set 3
Q1. Which reagents can not be used to oxidise primary alcohols to aldehydes?
(a) Acidic KMnO4
(b) Anhydrous CrO3
(c ) Both (a) and (b)
(d) None of the above
Q2. Name a reagent that can be used to oxidise alcohol to aldehyde?
(a) NaBH4
(b) LiAlH4
(c ) PCC
(d) None of the above
Q3. Which of the following compound has two hydroxyl groups?
(a) Picric acid
(b) o- Cressol
(c ) Both (a) and (b)
(d) None of the above
Q4. What happens when phenol is treated with dihydrogen in the presence of the nickel catalyst?
(a) Benzene
(b) Cyclo hexanol
(c ) Toluene
(d) None of the above
Q5. Name a reagent that is used to convert chloro ethane to diethyl ether.
(a) Sodium ethoxide
(b) Sodium hydroxide
(c ) Sulphuric Acid
(d) None of the above
Q6. Write the IUPAC name of the compound mentioned below.
CH3-CH(OH)-CH2-CH(OH)-CH(C2H5)-CH2-CH3
Q7. Draw the structure of 2-Methyl Butan-2ol.
Q8. Identify the compound formed in the reaction mentioned below.
Q9. Why does ethanol have a higher boiling point than methoxy methane?
Q10. What is Kolbe’s reaction?
Q11. Why does phenol give electrophilic substitution reactions?
Q12. What is the IUPAC name of the glycerol? Draw its structure.
Q13. Why ortho- Nitro phenol is steam volatile while para- Nitro phenol is less volatile?
Q14. Why is ortho- nitrophenol less soluble in water than para- and meta-nitro phenols?
Q15. Compound C2H6O has two isomers, X and Y. In reaction with HI, X gives alkyl iodide and water while Y gives alkyl iodide and alcohol. Identify compounds X and Y.
Q16. What happens when sodium ethoxide and ethyl chloride are heated together?
Q17. Convert phenol to anisole.
Q18. Convert ethanol to propan-2-ol.
Q19. Why is lewis acid not required in the bromination of phenol?
Q20. Draw all the isomeric structures of alcohol with the molecular formula C5H12O.
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