तुम कया खाते हो?
Tum kya khate ho
आप क्या खाते हैं? या फिर तुम क्या खाते हो?
What do you eat
I eat a bread
You can eat bread, a piece of bread or a slice of bread, but not 'a bread'. Not that this has anything to do with the question.
What you eat
How widespread is using "हो" with "आप"? I did have someone in Delhi "correct" me when I used "आप .... हैं" and tell me I should say "आप ....हो". Is this just a Delhi thing, or is it more common these days generally?
तुम क्या खाते हो is correct also