Can you put Windows 10 IoT Core on Raspberry Pi Zero?
According to the minimum requirements specified on the Windows IoT core page it might seem possible, but I'm not sure.
No, Windows 10 IoT requires the Pi 2's ARM 7 multicore chip (BCM 2836).
No, it won't run on Pi Zero. It's because of the hardware. The Pi zero and the first-generation Pis (BCM2835) use ARMv6. The Pi2 (BCM2836) uses ARMv7.
Windows 10 IoT Core needs ARMv7.
If I'm going to explain it to a layman, I'll say "The CPU is different".