NEET Practice Questions - Chemistry - Alcohols,Phenols and Ethers

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  • Subject:

    Chemistry

  • Chapter:

    Alcohols,Phenols and Ethers


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

(a) CH3CH(OH)CH3                                  (b) CH3CH2CH(OH)CH3

(c) CH3OH                                               (d) CH3CH2OH


n-propyl alcohol and iso-propyl alcohol can be chemically distinguished by which reagent 

(a) PCl5

(b) reduction

(c) oxidation with potassium dichromate

(d) ozonolysis


Among the following sets of reactants which one produces anisole?                           

(a) CH3CHO, RMgX

(b) C6H5OH, NaOH, CH3I

(c) C6H5OH, neutral FeCl3

(d) C6H5-CH3, CH3COCl, AlCl3


Consider the following reaction,

EthanolPBr3Al.KOH Y (ii) H2O, heat(i) H2SO4, room temperatureZ                                

The product Z is

(a) CH2=CH2

(b) CH3CH2OCH2CH3

(c) CH3CH2OSO3H

(d) CH3CH2OH


In the following sequence of reactions,

CH3-BrKCNAH3O+BetherLiAlH4C

the end product C is 

(a) acetone                    (b) methane

(c) acetaldehyde            (d) ethyl alcohol


Which one is formed when sodium phenoxide is heated with ethyl iodide?              

(a) Phenetole

(b) Ethyl phenyl alcohol

(c) Phenol

(d) None of the above


When phenol is treated with an excess of bromine water, it gives                                

(a) m-bromophenol                (b) o- and p-bromophenols

(c) 2,4-dibromophenol            (d) 2,4,6-tribromophenol


Identity Z in the sequence of reactions,                                         

CH3CH2CH=CH2 HBr/H2O2YC2H5ONaZ

(a) CH3-(CH2)3-O-CH2CH3

(b) (CH3)2CH2-O-CH2CH3

(c) CH3(CH2)4-O-CH3

(d) CH3CH2-CH(CH3)-O-CH2CH3


Reaction of with RMgX leads to formation  of                             

(a) RCHOHR                         (b) RCHOHCH3

(c) RCH2CH2OH                    (d) >RRCHCH2OH


Reaction of ethyl formate with excess of CH3MgI followed by hydrolysis gives

(1) n-propyl alcohol                  (2) ethanol              (3) isopropyl alcohol              (4)  propanal