NEET Practice Questions - Chemistry - Alcohols,Phenols and Ethers

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    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



(d) CH3CH2OH

In the following sequence of reactions,


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,                                         


(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