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

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Ethers: Preparation, Physical & Chemical Properties, Uses
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Reaction of ethyl formate with excess of CH3MgI followed by hydrolysis gives

1. n-propyl alcohol                 

2. ethanol             

3. isopropyl alcohol             

4.  propanal

 

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Alcohols: Preparation, Physical and Chemical Properties
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In a reaction, 

CH2=CH2acidHypochlorousMR

M=molecules, R=reagent. M and R are 

(a) CH3CH2Cl and NaOH

(b) CH2Cl. CH2OH and aq. NaHCO3

(c) CH3CH2OH and HCl

(d)  and heat

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Alcohols: Preparation, Physical and Chemical Properties
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Lucas reagent is

1. conc. HCl and anhy. ZnCl2

2. conc. HNO3 and anhy. ZnCl2

3. conc. HCl and hydrous ZnCl2

4. conc. HNO3 and hydrous ZnCl2

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Alcohols: Preparation, Physical and Chemical Properties
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The compound which reacts fastest with Lucas reagent is (at room temperature)              

(a) butan-1-ol

(b) butan-2-ol

(c) 2-methyl propan-1-ol

(d) 2-methyl propan-2-ol

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Alcohols: Preparation, Physical and Chemical Properties
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The ionisation constant of phenol is higher than that of ethanol because                

1. phenoxide ion is bulkier than ethoxide

2. phenoxide ion is stronger base than ethoxide

3. phenoxide ion is stabilised through delocalisation

4. phenoxide ion is less stable than ethoxide

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Phenols: Preparation, Properties, Acidic Nature of Phenol
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The general molecular formula, which represents the homologous series of alkanols is      

(a) CnH2nO2        (b) CnH2nO

(c) CnH2n+1O       (d) CnH2n+2O

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Alcohols: Preparation, Physical and Chemical Properties
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R-COOHRCH2OH. This reduction cannot be done  by:

(a) NaBH4                               (b) Na + alcohol

(c) LiAlH4                                (d) all of these

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Alcohols: Preparation, Physical and Chemical Properties
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What mass of isobutylene is obtained from 37 g of tertiary butyl alcohol by heating with 20% H2SO4 at 363 K, if the yield is 65%?

1. 16 g

2. 18.2 g

3. 20 g

4. 22 g

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Alcohols: Preparation, Physical and Chemical Properties
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Glycol is prepared industrially by the following reactions:

(a) 

(b) 

(c) 

(d) none of the above

Concept Questions :-

Alcohols: Preparation, Physical and Chemical Properties
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