In which of the following species is the underlined carbon having sp3 hybridisation?

In which of the following species is the underlined carbon having sp3 hybridisation?

Q. In which of the following species is the underlined carbon having sp3 hybridisation?

  1. CH3COOH
  2. CH3CH2OH
  3. CH3-CO-CH3
  4. CH2=CH-CH3

Answer: CH3CH2OH

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