Alcohols, Phenols and Ethers

Consider the following reaction : Ethanol PBr3 X alc. KOH Y [(ii) H2O, heat](i) H2SO4, room temperature Z the product Z is

1. CH3CH2-O-CH2-CH3
2. CH3-CH2-O-SO3H
3. CH3CH2OH
4. CH2=CH2

In the reaction : CH3- CH3 |CH-CH2-O-CH2-CH3 + HI heated Which of the following compounds will be formed?

1. CH3- CH3 |CH-CH3 + CH3CH2OH
2. CH3- CH3 |CH-CH2OH + CH3CH3
3. CH3- CH3 |CH-CH2OH + CH3CH2I
4. CH3- CH3 |CH-CH2-I + CH3CH2OH

Ethylene oxide when treated with Grignard reagent yields

1. primary alcohol
2. secondary alcohol
3. tertiary alcohol
4. cyclopropyl alcohol

The major organic product in the reaction is CH3-O-CH(CH3)2 + HI products

1. CH3I + (CH3)2CHOH
2. CH3OH + (CH3)2CHI
3. ICH2OCH(CH3)2
4. CH3O I |C(CH3)2

Which one of the following compounds is most acidic?

1. Cl-CH2-CH2-OH
2. [figure]
3. [figure]
4. [figure]

The -OH group of an alcohol or the -COOH group of a carboxylic acid can be replaced by -Cl using

1. phosphorus pentachloride
2. hypochlorous acid
3. chlorine
4. hydrochloric acid

Which one of the following will not form a yellow precipitate on heating with an alkaline solution of iodine?

1. CH3CH(OH)CH3
2. CH3CH2CH(OH)CH3
3. CH3OH
4. CH3CH2OH

Which one of the following can be oxidised to the corresponding carbonyl compound?

1. 2-Hydroxypropane
2. ortho-Nitrophenol
3. Phenol
4. 2-Methyl-2-hydroxypropane

In a set of the given reactions, acetic acid yielded a product C. CH3COOH + PCl5 A [Anh. AlCl3]C6H6 B [ether]C2H5MgBr C Product C would be

1. CH3CH(OH)C2H5
2. CH3COC6H5
3. CH3CH(OH)C6H5
4. CH3- C2H5 |C(OH)C6H5

n-Propyl alcohol and isopropyl alcohol can be chemically distinguished by which reagent?

1. PCl5
2. reduction
3. oxidation with potassium dichromate
4. ozonolysis