Acid catalysed hydration of alkenes except ethene leads to the formation of

Options

A. primary alcohol
B. secondary or tertiary alcohols
C. mixture of primary and secondary alcohols
D. mixture of secondary and tertiary alcohols

Answer

B

Explanation

Ethene gives `1^@` alcohol (ethanol) , propene gives `2^@` alcohol while 2-methylpropene gives `3^@` alcohol.
`underset"Ethene"(CH_2=CH_2)underset((ii)H_3O^+)overset((i)Conc. H_2SO_4)to underset"Ethanol"(CH_3CH_2OH)`
`underset"Propene"(CH_3-CH=CH_2)underset((ii)H_3O^+)overset((i)Conc. H_2SO_4)to underset(2^@ "Alcohol")(CH_3-CHOH-CH_3)`
`underset"2-Methylpropene"(CH_3-oversetoverset(CH_3)|C=CH_2)underset((ii)H_3O^+)overset(Conc. H_2SO_4)to underset(3^@ "Alcohol")((CH_3)_3COH)`
Thus , either `2^@` or `3^@` alcohol is formed.