what can you say about no reaction people??

Answer 1

They tend to be very lifeless?

Seriously, if you're asked to describe what you would observe and you believe no reaction would take place, just say "Nothing - there is no reaction."

But make very sure that you haven't overlooked something, because you'll feel very embarrassed if it turns out there was a reaction that you were supposed to be learning about and didn't think of.

Answer 2

they do not have a reaction