IN_OLDER_ANALYTICAL_METHODS,_WHICH_OF_THE_FOLLOWING_METHODS_WERE_USED_ – McqOptions

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1.	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» D. Blowing air into the column

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