Which of the following alcohols gives 2-butenc on dehydration byconc. HSO?
  • 2-methyl propene-2-ol
  • 2-methyl 1 -propanol
  • Butane-2-ol
  • Butane 1-ol
One mole of ethyl acetate on tatment with an excess of LiAlH
  • 1 mole acetic acid + 1 mole ethyl alcohol
  • 1 mole ethyl alcohol + 1 mole methyl alcohol
  • 2 moles of ethyl alcohol
  • 1 mole of 2-butanol
Which of the following reagents can not, be used to oxidise primary alcohols to aldehydes?
  • CrO
  • KMnO
  • Pyridinium chlorochromate
  • Heat in the presence of Cu at 573 K
1-Phenylethanol can be prepared by the reaction of benzaldehyde with
  • methyl bromide
  • ethyl iodide and magnesium
  • methyl iodide and magnesium (Grignard reagent’s)
  • methyl bromide and aluminium bromide
Which of the following alcohols will give the most stable carbocation during dehydration?
  • 2-methyl-1-propanol
  • 2-methyl-2-propanol
  • 1-Butanol
  • 2-Butanol
Order of esterification of alcohols are
  • 3° > 1° > 2°
  • 2°> 3° > 1°
  • 1 ° > 2° > 3°
  • None of these
What happens when tertiary butyl alcohol is passed over heated copper at 300°C?
  • Secondary butyl alcohol is formed
  • 2-methylpropene is formed
  • 1-butene is formed
  • Butanol is formed
What would be the reactant and reagent used to obtain 2, 4-dimenthyl pentan-3-ol?
  • Propanal and propyl magnesium bromide
  • 3-methylbutanal and 2-methyl magnesium iodide
  • 2-dimethylpropanone and methyl magnesium odide
  • 2-methylpropanal and isopropyl magnesium iodide
The decreasing order of boiling point of the following alcohols is
  • 3-methylbuan-2-ol > 2-methylbutan-2-ol > pentan-1-ol
  • Pentan-1-ol > 3-methylbutan-2-ol > 2-methylbutan-2-ol
  • 2-methylbutan-2-ol > 3-methylbutan-2-ol > pentan-1-ol
  • 2-methylbutan-2-ol > pental-1-ol > 3-methylbutan-2-ol
Acid catalysed dehydration of t-butanol is faster than that of n-butanol because
  • tertiary carbocation is more stable than primary carbocation
  • primary carbocation is more stable than tertiary carbocation
  • t-butanol has a higher boiling point
  • rearrangement takes place during dehydration of t- butanol
An alcohol X when treated with hot cone. HSO gave an alkene Y with formula CH. This alkene on ozonolysis gives single product with molecular formula CHO. The alcohol is
  • butan-1-ol,
  • butan-2-ol
  • 2-methylpropan-1-ol
  • 2,2-dimethylbutynal-1-oI
Propanone on reaction with alkyl magnesium bromide followed by hydrolysis will produce
  • primary alcohol
  • secondary alcohol
  • tertiary alcohol
  • carboxylic acid
Vapours of an alcohol X when passed over hot reduced copper, produce an alkene, the alcohol is
  • primary alcohol
  • secondary alcohol
  • tertiary alcohol
  • dihydric alcohol
Phenol when treated with excess of bromine water gives a white precipitate of
  • 2, 4, 6-tribromophenol
  • o-bromophenol
  • p-bromophenol
  • bromobenzene
Picricacid is a yellow coloured compound. Its chemical name is
  • m-nitrobenzoic acid
  • 2, 4, 6-trinitropheriol
  • 2, 4, 6-tribromophenol
  • p-nitrophenol
Ortho-nitrophenol is less soluble in water than, p- and m- nitrophenols because
  • o-nitrophenol shows intramolecular H-bonding
  • o-nitrophenol shows intermolecular H-bonding
  • melting point of o-nitrophenol is lower than those of m- and p-isomers
  • o-nitrophenol is more volatile in steam than those of m- and p-isomers
The best reagent to convert pent-3-en-2-ol into pent-3-en- 2-one is
  • acidic permanganate
  • acidic dichromate
  • chromic anhydride in glacial acetic acid
  • pyridiriium chlorochromate
Identify the final product of the reaction sequence.
  • Benzophenone
  • Acetophenone
  • Diphenyl
  • Methyl salicylate
The reaction between phenol and chloroform in the presence of aqueous NaOH is
  • nucleophilic substitution reaction
  • electrophilic addition reaction
  • electrophilic substitution reaction
  • nucleophilic addition reaction
In the following reaction sequence Z is
  • butan-1-ol
  • butan-2-ol
  • 2-methylpropan-2-ol
  • 1, 1-dimethylethanol
0 h : 0 m : 1 s

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