No a type II card is twice as thick as a type I slot (but a type I card WILL fit in a type II slot)
Yes, two type I or type II cards can fit into a single type III slot and both cards can work at the same time.
Yes most card readers will read both formats, with the exception of some early models
2
PCMCIA cards, or PC cards as they are commonly known, were designed originally for adding memory to portable computers, but are now used in a variety of devices.
No as the operating system will not be able to process the information on that size of card.
Type II PCMCIA slots are used by most PCMCIA modems.
Microdrive is a miniature 1" hard disk designed to fit in a CompactFlash (CF) Type II slot. In 2008 Hitachi and Seagate released 8GB versions. (See Wikipedia, "Microdrive")
Sounds like some variant of SCSI but I'd have to see a photograph to be sure.
Slot 1.
5.0/5.5 mm thick
Type ii
Two Type II PCMCIA cards OR One Type III PCMCIA card