Question

select the burette.
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identify laboratory tools (100)

Explanation:

A burette is a long, graduated glass tube with a stopcock at one end. The first image shows a tube with a stopcock (the red part), which is characteristic of a burette. The second image is a pipette (used for measuring and transferring small volumes), and the third is a graduated cylinder (used for measuring volume but has a different shape and no stopcock).

Answer:

The first image (the one with the red stopcock) is the burette.