Question

Which of the following alcohols gives 2-butene on dehydration be conc. H2SO4?

(A) 2-Methyl propene-2-ol
(B) 2-Methyl 1-propanol
(c) Butane-2-ol
(D) Butane 1-ol.​

Answer 1

Answer:

c.butane-2-ol is answer

Answer 2

2-butene can be obtained by dehydration of Butane-2-ol by using concentrated H$_{2}$SO$_{4}$ . Hence , the option (c) is the correct answer .

• Concentrated H$_{2}$SO$_{4}$ is used as a dehydrating agent to obtain alkene from alcohols of alkane .
• 2-Butene is the simplest alkene to exhibit cis / trans-isomerism .

• 2-Butene is used in the production of petrol .