Stand in science class to give answer (6)
I believe the answer is:
retort
This clue might be a double definition.
'stand in science class' is the first definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'give answer' is the second definition.
(thesaurus)
'to' acts as a link.
Can you help me to learn more?
(Other definitions for retort that I've seen before include "Sally" , "Sharp response; lab item" , "Answer in retaliation" , "Part of chemist's equipment" , "Quick and clever or angry reply" .)