A Vernier Caliper is the most appropriate instrument for measuring the internal diameter of a test tube with precision. • It has internal jaws specifically designed for this purpose. • It provides accuracy up to 0.01 mm or 0.02 mm, which is much more precise than a ruler or tape.
Which instrument is the most suitable to measure the internal diameter of a test tube?
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This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.