The group that activates benzene ring towards electrophilic substitution reaction is-

  • OH

  • NO2

  • CN

  • COOH

An adduct will be formed in which of the following reaction?

  • Propene → Propan-2-ol

  • Benzyl chloride → Benzyl alcohol
  •   Ethyl magnesium chloride → Propan-1-ol
  • Ethanol →Ethene

Potassium permanganate reagent is used for -
  • Oxidation of primary alcohol to carboxylic acid.
  • Oxidation of primary alcohol to aldehyde.
  • Bromination of phenol to 2,4,6-tribromophenol.
  •  Dehydration of propan-2-ol to propene.

The compound having the lowest boiling point is -

  • Ethanol

  • Methanol

  • Methoxymethane

  • Propanol

 Preferred alkyl halide for synthesis of ether in Williamson synthesis is-

  • Secondary

  • Tertiary and secondary both

  • Tertiary

  • Primary

The product formed on dehydration of propan-1-ol is -

  •   1-Propoxypropane 

  •   2-Propoxypropane 

  •   1-Propoxyethane

  •   2-Ethoxypropane 

The alkoxy group in aryl alkyl ethers activate the benzene ring towards -

  • Nucleophilic addition reaction

  • Electrophilic addition reaction

  • Nucleophilic substitution reaction

  • Electrophilic substitution reaction

4-Methoxytoluene will be the major product in -
  • Friedel-Crafts reaction – alkylation of anisole
  • Nitration of anisole
  • Bromination of anisole in ethanoic acid medium
  • Friedel-Craft’s acetylation of anisole

An appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene is/are : 

  •  

  •  

  • 3. CH3-CH2-CH2-O-CH3+HBr

  •  (CH3)3C-OC2H5 + HI

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Upon dehydration, above mentioned compound will not give -

 

  •  option

  •  option

  •  option

  •  option

The most reactive compound among the following for electrophilic aromatic substitution is-

  •  

  •  

  •  

  •  

The strongest acid among the following is -

  •  

  •  

  •  

  •  

The compound that is  used as antifreeze in automobile radiators is: 

  •   Glycol

  •   Nitrophenol
  •   Ethyl alcohol
  •   Methyl alcohol

Which one of the following compounds will be most readily dehydrated ?
  • 1
  • 2
  • 3
  • 4

Among the following four compounds

(a) Phenol

(b) methyl phenol

(c) meta-nitrophenol

(d) para-nitrophenol

The acidity order is –

  • c > d > a > b

  • a > d > c > b

  • b > a > c > d

  • d > c > a > b

When glycerol is treated with an excess of HI, it produces -

  • Allyl iodide

  • Propene
  • Glycerol triiodide
  • 2-Iodopropane

Which of the following does not give nucleophilic substitution with alcohol :
  • CH3COCl
  • Acetic anhydride
  • Ether
  • None of the above

Which of the following statement is correct for the stability of ions of ethyl alcohol and phenol :

  • Delocalisation of π-electrons in phenoxide ion

  • Delocalisation of electrons in ethoxide ion

  • Inductive effect of ethyl and phenyl group

  • Localisation of sigma-electrons in phenoxide ion

The compound that gives p-cresol with p-methyl diazonium chloride is : 

  •  H2O

  •  H3PO2

  • HCOOH 

  •  C6H5OH

Order of acidic strength of the following compound will be :

  •   C > D > B > A

  •   D > C > B > A
  •   A > B > C > D
  •   B > A > C > D

The compound that will not form a yellow precipitate on heating with an alkaline solution of iodine is :-

  •  CH3CH2CH(OH)CH3

  •  CH3OH

  •  CH3CH2OH

  •  CH3CH(OH)CH3

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

  • PCl5

  • Reduction

  • Oxidation with Potassium dichromate

  • Ozonolysis

When phenol is treated with CHCl3 and NaOH, the product formed is :-

  • Benzaldehyde

  • Salicylaldehyde

  • Salicylic acid

  • Benzoic acid

The correct acidic order of following is : -

  •   I > II > III

  •   III > I > II
  •   II > III > I
  •   I > III > II

Incorrect statement among the following is  : -
  •   FeCl3 is used in detection of phenol.
  • Fehling solution is used in detection of glucose.
  •   Tollen reagent is used in detection of unsaturation.
  •   NaHSO3 is used in detection of carbonyl compound.

In preparation of alkene from alcohol using Al2O3 which is effective factor : -
  •   Porousity of Al2O3
  •   Temperature
  •   Concentration
  •   Surface area of Al2O3

The correct statement among the following is-
  •   Any aldehyde gives secondary alcohol on reduction.
  •   Reaction of vegetable oil with H2SO4 give glycerin.
  •   C2H5OH, and iodine with NaOH gives iodoform.
  •   Sucrose on reaction with NaCl give invert sugar.

Propanol has a higher boiling point than that of butane because -

  • Butane undergoes intermolecular ionic bonding

  • Propanol undergoes intermolecular H-bonding

  • Propanol undergoes intermolecular ionic bonding

  • Butane undergoes intermolecular H-bonding

Alcohols are comparatively more soluble in water than hydrocarbons of comparable molecular masses because -

  • Alcohols form van der waal bonds with water while hydrocarbons do not

  • Alcohols form covalent bonds with water while hydrocarbons do not

  • Alcohols form  ionic bonds with water while hydrocarbons do not

  • Alcohols form H-bonds with water while hydrocarbons do not

Hydroboration-oxidation reaction is -

  • The addition of borane followed by oxidation

  • The addition of propane followed by oxidation

  • The addition of propane followed by oxidation

  • The addition of borane followed by reduction

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