This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
The specific test for ketohexoses 
Select and explain. 
A. Selivanoff's test, B. Osazone test, C. Molisch test, D. None of these
A: Selivanoff's test
Answer: A: Selivanoff's test 
Explanation: Selivanoff's test: this is a specific test for ketohexoses. Concentrated hydrochloric acid dehydrates ketohexoses to form furfural derivatives which condense with resorcinol to give a cherry red complex.