In theory, yes, if they are the same type, along with decoupling caps. A lot of board were made for more memory than they were sold fort.
They can go up to 14MB indeed, but 10MB memory modules are kinda rare.
The issue is finding identical memory modules that works. Maybe steal them from low end memory modules but there is some risk removing them.
Meanwhile, RAM Doubler 2 helps somewhat with this issue.