Questions & Answers about यह हल उस हल से बदतर है।
- यह = this
- हल = solution
- उस हल से = than that solution
- बदतर = worse
- है = is
So the literal order is:
This solution that solution than worse is.
That is normal Hindi word order.
Because से is a postposition, and Hindi uses the oblique form of pronouns/demonstratives before postpositions.
So:
- वह हल = that solution
- उस हल से = than/from that solution
The same pattern happens with this:
- यह हल = this solution
- इस हल से = than/from this solution
So वह changes to उस before से.
Because there is no postposition after यह here. It is just the subject of the sentence, so it stays in the direct form:
- यह हल = this solution
If you added a postposition, then it would become इस:
- इस हल में = in this solution