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Practice Test 11

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Solution

When 2-methoxypropane is heated with HI, in the mole ratio 1 : 1, the major products formed are

methanol and 2-iodopropane
methyl iodide and 2-propanol
methyl iodide and 2-iodopropane
methanol and 2-propanol

Solution

During dehydration of alcohols to alkenes by heating with conc. H₂SO₄ the initiation step is

formation of carbocation
elimination of water
formation of an ester
protonation of alcohol molecule

Solution

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Solution

Which one of the following reaction provides a primary alcohol?

Hydration of alkyne
Oxymercuration of alkene
Oxidation hydroboration of alkene
Reaction of Grignard reagent with acetaldehyde

Solution

The ionization constant of phenol is higher than that of ethanol because :

phenoxideion is bulkier than ethoxide
phenoxide ion is stronger base than ethoxide
phenoxide ion is stabilized through delocalization
phenoxide ion is less stable than ethoxide

Solution

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Solution

Which one of the following reagents is used to reduce an aldehyde to primary school?

N₂H₄/KOH
Zn/Hg and conc. HCl
LiAlH₄
Alkaline CuSO₄ containing Rochelle salt

Solution

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Alcohols, Phenols And Ethers

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