In older analytical methods, which of the following methods were used to allow movement of mobile phase?
A. Pumps
B. Pressure
C. Gravity
D. Blowing air into the column
Answer:C
In older analytical methods, which of the following methods were used to allow movement of mobile phase?
A. Pumps B. Pressure C. Gravity D. Blowing air into the column
Explanation: In older analytical methods, gravity facilitated the movement of the mobile phase. The effect of capillary action was also employed to allow movement.