If $0.0075\,\text{mol}$ of alcohol $X$ is fully combusted in an excess of oxygen, and the resulting gases are then bubbled through excess limewater (calcium hydroxide solution), $3.0\,\text{g}$ of calcium carbonate are formed. When $X$ is heated with acidified potassium dichromate(VI), the colour changes from orange to green. What might the identity of $X$ be?
- A$\text{CH}_3\text{CH(OH)CH}_2\text{CH}_3$
- B$(\text{CH}_3)_3\text{COH}$
- C$\text{CH}_3\text{CH}_2\text{CH}_2\text{OH}$
- D$\text{CH}_3\text{CH(OH)CH}_3$