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A measuring cylinder reading is taken from above at an angle. What type of error may occur?

Answer and explanation

Correct answer: Viewing angle reading error

The governing concept is parallax error, which occurs when a scale is viewed from an angle rather than at eye level. In a measuring cylinder, the observer should place the eye horizontally level with the liquid meniscus and read the appropriate part of the meniscus, usually its bottom for water-like liquids. Looking from above changes the apparent position of the meniscus and can make the recorded volume too high or too low. Therefore option A is correct. A chemical change concerns formation of a new substance, controlling an independent variable concerns experimental design, and random sampling concerns selection of specimens; none describes this reading problem.

Related tags

Parallax-ErrorMeasuring-CylinderVolumeMeasurement-AccuracyMeasurement And Scientific UnitsExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScience

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