$1.0\,\text{mol}$ of an organic compound, J, needs $6.0\,\text{mol}$ of oxygen for complete combustion. When $1.0\,\text{mol}$ of J is treated with sodium, $0.50\,\text{mol}$ of a gas is formed, and this gas makes a ‘pop’ with a lighted splint. If J is reacted with an excess of hot acidified potassium manganate(VII), an organic product is obtained that forms an orange-red precipitate with 2,4-DNPH reagent. Which compound is J?
- Abut-1-ene
- Bbutan-2-ol
- Cpropan-2-ol
- D2-methylpropan-2-ol