Practice on Alcohol, Phenol and Ether

Start practice on alcohol

1. Alcohol

1. Which of the following are isomers ?

1. Methyl alcohol and dimethyl ether
2. Acetone and acetaldehyde
3. Ethyl alcohol and dimethyl ether
4. Propionic acid and propanone

     

ans :c

2. Formaldehyde gives an additive product aith methyl magnesium iodide, which on aqueous hydrolysis gives

1. Isopropyl alcohol
2. Methyl alcohol
3. Ethyl alcohol
4. Propyl alcohol

     

ans :c

3.

A is .

     

ans :a

4.

A is.

     

ans :a

5. RMgBr on reaction with an excess of oxygen followed by hydrolysis gives

1. RH
2. ROOR
3. ROH
4. ROOH

     

ans :c

6. Acetion of nitrous acid with ethylamine produces

1. Ethyl alcohol
2. Ammonia
3. Ethane
4. Nitroethane

     

ans :a

7. Which of the following is industrially prepared by passing ethylene into hypochlorus acid ?

1. Ethane 
2. Ethylene oxide
3. Ethylene dinitrate
4. Ethylene glycol

     

ans :d

8. What is the product in the following reaction ?

     

ans : c

9.

in the above sequence X can be

1. H2/Ni
2. K2Cr2O7/H+
3. NaBH4
4. Both (a) and (c)

     

ans :c

10. Which of the following explains the viscous nature of glycerol?

1. Covalent bonds
2. Vander Walls forces
3. Hydrogen bonds
4. Ionic forces

     

ans :c

11. Which reagent can convert acetic acid into ethanol?

1. Na + alcohol
2. H2 + pt
3. LiAlH4 + ether
4. Sn +HCl

     

ans :c

12. Ethylene reacts with Baeyer's reagent to give

1. Ethane
2. Ethylene glycol
3. Ethyl alcohol
4. None of above

     

ans :b

13. Acetone on treatment with CH3MgI and on further hydrolysis gives

1. Isopropyl alcohol
2. Primary alcohol
3. Acetic acid
4. 2-methyl 2-propanol

     

ans :d

14. Acetic acid and CH3Oh are obtained on a large scale by destructive distillation of 

1. Wood
2. Coal
3. Turpentine
4. Crude oil

     

ans :a

15. A compound X with molucular formula C3H8O can be oxidized to a compound Y with the molecular formula C3H6O2 , X is most likely be.

1. Primary alcohol
2. Secondary alcohol
3. Aldehyde
4. Ketone

     

ans :

16. Equimolar quantities of ethanol and methanol are heated with conc. H2SO4 . The product formed is

1. C2H5OC2H5
2. CH3OCH3
3. C2H5OCH3
4. all the three

     

ans :d

17. The compound that reacts fastest with Lucas reagent (conc. HCl + ZnCl2) at room temperature is

1. Butan-1-ol
2. Butan-2-ol
3. 2-methyl propan-1-ol
4. 2-methyl propan-2-ol

     

ans :d

18. Which of the following known asmercaptans ?

1. Thioacids 
2. Thioethers
3. Thiolalcohols
4. Thioaldehydes

     

ans :c

19. Coconut oil on alkaline hydrolysis gives

1. Glycol
2. Glycerol
3. Alcohol
4. Ethylene oxide

     

ans :b

20. Methyl alcohol can be distinguished from ethyl alcohol using

1. sodium hydroxide and iodine
2. schiff's reagent
3. fehling solution
4. phthalein fusion test

     

ans :a

21. An organic compound dissolved in dry benzene evolved hydrogen on treatment with sodium. It is

1. A ketone
2. An alcohol
3. An aldehyde
4. A tertialy amine

     

ans :b

22. Ethylene glycol, on oxidation with periodic acid, gives 

1. Oxalic acid
2. Glycol
3. Glycollic acid
4. Formaldehyde

     

ans :d

23. The reagent which easily reacts with ethanol and propanol is

1. Fehling solution
2. Schiff's reagent
3. Grignard reagent
4. Tollen's reagent

     

ans :c

24. The -OH group of methyl alcohol cannot be replaced by chlorine by the action of

1. Phosphorus trichloride
2. Hydrogen chloride
3. Chlorine
4. None of these

     

ans :c

25. The alcohol that easily reacts with conc. HCl is

     

ans :c

26. Which of the following compounds is oxidized to prepare methyl ethyl ketone ?

1. 2-propanol
2. 2-butanol
3. 1-butanol
4. tert-butyl alcohol

     

ans :b

27. Primary and secondary alcohols on action of reduced copper give

1. Only aldehydes
2. Ketones and aldehydes , respectively
3. Aldehydes and ketones , respectively
4. Only ketones

     

ans :c

28. Lucas test is used for

1. Amines
2. Alcohols
3. Diethyl ether
4. Glacial acetic acid

     

ans :b

29. Consider the reaction

the leaving group is

     

ans :b

30. When ethyl alcohol reacts with acetic acid, the products formed are

1. Ethyl acetate + water
2. Sodium ethoxide + hydrogen
3. Ethyl acetate + soap
4. Ethyl alcohol + water

     

ans :a

31. By distilling glycol with fumming sulfuric acid, which of following is obtained

1. Dioxan
2. Pinacol
3. Glycerol
4. Ethylene oxide

     

ans :a

32. When primary alcohol is oxdized with chlorine, it produces

     

ans :b

33. Which of the following will not react with NaOH ?

     

ans :c

34. Which of the following compound give yellow pericipitate with I2 and NaOH ?

     

ans :a

35. Which of the following react with benzoic acid to form ethyl benzoate ?

1. Cinnamic acid
2. Ethyl alcohol
3. Sodium ethoxide
4. Ethyl chloride

     

ans :b

36. The dehydration of 2-methyl butanol with conc. H2SO4 gives

1. 2-methyl pent-2-ene
2. Pentene
3. 2-methyl but-2-ene as major product
4. 2-methyl butene as major project

     

ans :c

37. The best method to prepare cyclohexene from cyclohexanol is by using 

1. Conc. HCl + ZnCl2
2. HBr
3. Conc. H3PO4
4. Conc.HCL

     

ans :c

38. Tertiary butyl alcohol gives tertiary butyl chloride on treatment with

1. NaOCl
2. KCN
3. Conc. HCl/anhydrous ZnCl2
4. Cl2

     

ans :c

39. Methanol and ethanol are distinguished by the 

1. Action of HCl
2. Iodoform test
3. Solubility in water
4. Sodium

     

ans :b

40. predict the nature of reducing agent in the following reaction

1. LiAlH4
2. NaBH4
3. H2/Pt
4. Both (a) and (c)

     

ans : c

2. Phenol

1. Phenol can be distinguished from aliphatic alcohol with 

1. Tollen's reagent
2. Schiff's base
3. FeCl3
4. HCl

     

ans :c

2. Picric acid is

1. 2,4,6-trinitrophenol
2. Avolatile liquid
3. Trinitrotoluene
4. None of these

     

ans :a

3. One heating aqueous solution of benzene diazonium chloride, which of the following  is formed ?

1. Benzene
2. Phenol
3. Chlorobenzene
4. Aniline

     

ans :b

4. Benzene diazonium chloride on boiling with dilute sulfuric acid gives

1. Phenol
2. Benzoic acid
3. Benzene
4. Toluene

     

ans :a

5. Cresols are

1. Dihydric phenols
2. Hydroxy toluenes
3. Trihydric phenols
4. Trihydric alcohols

     

ans :b

6.

P and Q are isomers Identify Q

     

ans :c

7.

Starting substrate "A" is :

     

ans :b

8. Which of the following reagents can be used to seprate a mixture of phenol and carboxylic acid ?

1. NaOH
2. Na2CO3
3. Lime water
4. NaHCO3

     

ans :d

9. Phenol can be distinguished from aliphatic alcohol with 

1. Tollen's reagent
2. Schiff's base
3. Fecl3
4. HCl

     

ans :c

10. The compound with the lowest boiling point i.e. the most volatile compound is

     

ans :a

11. Phenol is less acidic than

1. Ethanol
2. o-nitrophenol
3. Methanol
4. p-methylphenol

     

ans :b

12. Sodium phenoxide reacts with CO2 at 400k and 4 to 7 atm pressure to give

1. Benzoic acid
2. Salicylaldehyde
3. Catechol
4. Sodium salicylate

     

ans :d

13. Phenol is treated with bromine water and shaken well. the white precipitate formed during the process is

1. 2,4,6-tribromophenol
2. 2,4-dibromophenol
3. m-bromophenol
4. A mixture of o- and p-bromophenols

     

ans :a

14. A compound that easily undergoes bromination is 

1. Benzoic acid
2. Toluene
3. Benzene
4. Phenol

     

ans :d

15. The reaction of conc HNO3 and phenol forms

1. Picric acid
2. Salicylic acid
3. o- and p-nitrophenol
4. Benzoic acid

     

ans :a

16. Which compound has hydrogen bonding ?

1. Toluene
2. Chlorobenzene
3. Phenol
4. Nitrobenzene

     

ans :c

17. Action of diazomethane on phenol liberates

1. N2
2. H2
3. O2
4. CO2

     

ans :a

18. Which of the following is most acidic ?

1. Phenol
2. Benzyl alcohol
3. Cyclohexanol
4. m-chlorophenol

     

ans :d

19. Aspirin is also known as

1. Methyl salicylic acid
2. Methyl salicylatye
3. Acetyl salicylate
4. Acetyl salicylic acid

     

ans :d

20. Oxiran is

1. Ethylene oxide
2. Ethyl glycoate
3. Diethyl ether
4. Glycolic ester

     

ans :a

3.Ethers

1. The compound formed when ethyl bromid is heated with dry silver oxide is

1. Dimethyl ether
2. Methyl alcohol
3. Diethyl ether
4. Ethyl alcohol

     

ans :c

2. According to lewis concept of acids and bases, ether is 

1. Acidic
2. Amphoteric
3. Neutral
4. Basic

     

ans :d

3. Methylphenyl ether can be obtained by reacting 

1. methanol and phenol
2. methoxide ions and bromobenzene
3. Phenolate ions and methyl bromide
4. bromo benzene and methyl bromide

     

ans :c

4.  Which one of the following reactions does not yield an alkyl halide ?

     

ans :d

5.  Diethyl ether can be decomposed by heating with 

1. KMnO4
2. NaOH
3. Water
4. HI

     

ans :d

6. Epoxides are

1. Ethers with another functional group
2. Not ethers 
3. Aryl-alkyl ethers
4. Cylic ethers

     

ans :d

7. The reagent used for the prepration of higher ether from halogenated ethers is

1. Conc, H2SO4
2. Sodium alkoxide
3. Dry silver oxide
4. Grignard reagent

     

ans :d

8. When an alkyl halide is allowed to react with a sodium alkoxide the product most likely is

1. An aldehyde
2. A ketone
3. An ether
4. A carboxylic acid

     

ans :c

9. Methyl-tert-butyl ether on heating with HI of one molar concentration, gives

     

ans :b

10. In which case mrthyl-t-butyl ether is formed ?

     

ans :b

11. An organic compound A reacts with sodium metal and forms B. On heating with conc H2S)4 ,A gives diethyl ether. A and B are

     

ans :a