Question: what are the 20 laboratory apparatus and their uses?
Answer: Microscope. A microscope is a popular piece of lab equipment used to observe things that are too small and are not visible to the naked human eye. ... 
Test tube. ... 
Watch glass. ... 
Crucible. ... 
Volumetric flasks. ... 
Beakers. ... 
Bunsen burner. ... 
Spatula.