can i

yes you can use 32-Bit OS on 64-Bit mother board. One of my friend is using in the sameway. i think you will be facing some problems while using it. But the problems can be fixed. Dont worry try it and have a nice day.

Yes, but you will notice much difference, you better do 64 bit on 64 bit :D although 64 bit isn't completely stable in my opinion.. You can't do 64bit on 32bit :) Have a good day

Yes you can, most of the application anyway are 32bit so its just fine. This is somewhat delimiting the performance because it is running in sort compatibility more but you wont hardly notice it because generally 64bit board uses a faster processor than 32bit boards. 32bit OS and applications will not encounter any errors because they don't wont use any 64 bit instructions. If your Window is 32bit, you cannot install a 64bit applications.

yes of course,you can use a 32 bit os on 64 bit motherboard.infact i would prefer to use 32 bit because at this time there are many softwares which are not compatible with 64bit os. but 64 bit os are future'e techonology.In near future everything will be 64 bit. take care peace.

the processor and motherboard bit number has nothing to do with the operating system one. if it did we would be screwed along time ago the first 64 bit processors were released in 2003 ! pretty much every single processor/motherboard are 64 bit now