Important Questions on Alcohols, Phenols & ethers

 

Important Questions of – Alcohol , Phenols & Ether ( Chapter-11^th )           4marks

JKBOSE_ Pattern :-    2 Question = 1(VVSAQ or Fill-up or MCQ+ 3 SAQ marks)

Q1. Write the three methods of Preparation of Alcohols.

Q2. Write the three methods of Preparation of Phenols  & Ethers.

Q3. Write the three chemical properties of alcohols & ethers

Q4. Write the three chemical properties of Ethers.

Q5. How alcohol( Methanol)  reacts with –I) Na & NaOH   II) PCl3 & PCl5          III) CH3COOH

Q6. How HI reacts with following ethers : -I) CH3-O-CH3   II) Tert. dibutyl ether    III)Ethylmethylether

Q7. Write short notes on –I) Hydroboration reaction II) Reimer-Tiemann reaction   III) Williamson’s ether synthesis

Q8. Write the chemical reactions for –I) Kolbe’s reaction   II) Fermentation of carbohydrates     III) Nitration of Phenols

Q9.  Write short notes on I) Friedel Craft alkylation  reaction of Anisole   II) Friedel Craft aceylation of Phenol    III)  Halogenation of phenol

Q10. Convert the following :- I) Primary alcohol to carboxylic acid    II) Benzyl alcohol to Benzonic acid  II) Butan-2-one to butan-2-ol

Q11. Write the mechanism of hydration of ethene to yield ethanol.

Q12. Write the mechanism of conversion of ethanol to diethylether.

Q13. Give two reactions that show the acidic nature of Phenol. Compare acidity of phenol with that of ethanol

Q14.  Explain why is o-nitrophenol more acidic than O-methoxyphenol ?

Q15. Write the mechanism of dehydration of ethanol to ethene.

Q16. Give the reason for the higher boiling point of ethanol in comparison to methoxymethane & ethane .

Q17. Why O-nitrophenol is steam volatile while P-nitrophenol is less steam volatile ?

Q18. How primary , secondary & tertiary alcohols are distinguished?

Q19. What is victor Meyer & Lucas reagent test? Write chemical reactions to illustrate your answer.

Q20. Name the reagent involved in the following conversion:-

A) Ethanol   to    Ethanal      B) Propan-2-ol    to Acetone    III) But-2-en-1-ol    to   But-2-enal

Q21. Write the IUPAC & chemical structure of  –I) Picric acid    II) Anisole    III) 2-Ethoxy -3-methylpentane

Q22. Write short notes on –I)  Oxymercuration-demercuration        II) Coupling reaction

Q23. Arrange the following compounds in order of their increasing boiling points :-

Pentanol , butanol , Butan-2-ol   , ethanol , Propanol & methanol

Q24. Illustrate with examples the limitations of williamson’s synthesis for the preparation of certain types of ethers.

Q25. How RMgX reacts with carbonyl compounds to give all types of alcohols?

Questions carrying 1 Mark

Q1. Phenols are also called as ………….

Q2. PCC is ----

Q3. Jones reagent consists of -------

Q4. The structure of PDC is --------

Q5. What is denatured alcohol?

Q6. How phenols are prepared from benzenediazonium chlorides?

Q7. Write chemical names of I) Catechol  II) Resorcinol

Q8. What is formed by oxidation of phenols with Pot. Dichromate /sulphuric acid ?

Q9. How phenol is converted into Benzene ?

Q10. How salicylic acid is formed from Phenol ?

Q11. Name the reagent used in bromination of phenol to 2,4,6-tribromophenol

Q12. Write IUPAC  name & chemical structure  of I) Glycerol    II) Isopropylalcohol

Q13.  What is Lucas reagent ?

Q14. Phenols &  aromatic ethers are o/p directing . ( True/false)

Q15. How salicylic acid reacts with Methanol ?