prepositions at the beginning of a question

[allthewayanime]

Generally prepositions go at the end of the questions but there are some of them which actually start with prepositions, why is that possible? For instance:

'At what time do you come home?'
'In which month we are?'

[bhaisahab]

Generally prepositions go at the end of the questions but there are some of them which actually start with prepositions, why is that possible? For instance:

'At what time do you come home?'
'In which month are we?'

The above are correct English, that's why it's possible.

[5jj]

At one time in the past, a 'rule was invented that a preposition was something you couldn't end a sentence with. - It would have been necessary to reword that sentence as: At one time in the past, a 'rule' was invented that a preposition was something with which youc ould not end a sentence.

That 'rule' is now largely ignored, especially in informal conversation. However, in formal writing, some people still obseerve it - which is why your sentences are correct.