As we seen from the previous post, there was :
이것은/ 그것은 / 저것은 ] 무엇입니까?
The 무엇 is treated as a noun
There are several question words that are used to be used, such as :
| No | Question word | Meaning |
| 1. | 무엇 | what |
| 2 | 누구 | who |
| 3 | 온제 | when |
| 4 | 어디 | where |
| 5 | 얼마 | how much |
| 6 | 왜 | why |
| 7 | 어떻게 | how |
all of these words can replace 무엇 and treated as a noun.