The mixture of petroleum ether and benzene is used in the elution ratio of ____________
A. 1 : 2
B. 1 : 5
C. 1 : 9
D. 1 : 12
Answer:C
The mixture of petroleum ether and benzene is used in the elution ratio of ____________
A. 1 : 2 B. 1 : 5 C. 1 : 9 D. 1 : 12
Explanation: The mixture of petroleum ether and benzene is used in the elution ratio of 1:9 (V/V).