Questions & Answers about किराए पर बहस हुई।
Because किराया changes to its oblique form before a postposition like पर.
- Direct form: किराया
- Oblique form: किराए
- With postposition: किराए पर
This is very common with masculine singular nouns ending in -आ.
For example:
- कमरा → कमरे में
- लड़का → लड़के से
- किराया → किराए पर
So किराए पर is grammatically the expected form.
Here, किराए पर means something like about the rent or over the rent.
Even though पर often literally means on, Hindi often uses it with nouns like बहस, चर्चा, and विवाद to mean on/about/regarding a topic.
So in this sentence, किराए पर does not mean a physical location. It marks the topic of the argument.