Question 7 • HVA 26-27 IM Biology A
The volume dispensed from a graduated pipette is found by subtracting the final reading from the initial reading, so B is correct. Read the liquid level at eye height to avoid parallax error, and make sure there are no air bubbles in the liquid column, so C and E are correct. Tapping the pipette on a table is not a reliable way to improve the reading, and the final reading alone does not show how much was dispensed.
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