Exams › NEET › Chemistry

Which one of the following compounds will be most readily dehydrated?

1. (a) H3C - CH = CH - OH
2. (b) H3C - CH2 - CH - OH
3. (c) H3C - CH - CH2 - OH
4. (d) H3C - CH2 - CH2 - OH

Correct answer: (a) H3C - CH = CH - OH

Solution

Compound (a), H3C - CH = CH - OH, is an allylic alcohol, and dehydration is most favorable due to the formation of a stable conjugated system (allylic carbocation) after the loss of water. This stability makes it the most readily dehydrated among the options.

Related NEET Chemistry questions

• Common name for methanol is:
• When glycerol is treated with excess of HI, it produces:
• The rates of reaction of different alcohols with Lucas reagent follows the order: 3° alcohol > 2° alcohol > 1° alcohol.
• Lucas reagent is conc. HCl + anhyd. ZnCl2.
• Phenols are more acidic than alcohols as they are resonance stabilized whereas alcohols are not.
• Given are cyclohexanol (I), acetic acid (II), 2,4,6-trinitrophenol (III), and phenol (IV). In these, the order of decreasing acidic character will be:

⚔️ Practice NEET Chemistry free + battle 1v1 →