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Parallax Error

Parallax Error may occur when:

A. A weighing balance is not calibrated.

B. A ruler is not checked against a standard length.

C. A pointer on a meter or surface of a liquid in a buret or pipette is not observed from directly straight on.

D. An object under water is observed at an angle from above the surface.

E. The concentration of an acid to be used in a titration is not first checked against a standard.

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