With the apparatus arranged as shown, an orange precipitate is produced in test-tube Z. Compound Q is heated with acidified potassium dichromate(VI), and the vapour then travels into test-tube Z, which contains 2,4-dinitrophenylhydrazine reagent. What might compound Q be?
- A$\text{CH}_3\text{CH}_2\text{CH}_2\text{OH}$
- B$\text{CH}_3\text{CH(OCH}_3)$
- C$(\text{CH}_3)_3\text{COH}$