इस कोच में सीट उपलब्ध है।

to be

Breakdown of इस कोच में सीट उपलब्ध है।

• यह: this
• में: in
• उपलब्ध: available (item or service)

Questions & Answers about इस कोच में सीट उपलब्ध है।

Why is इस used here instead of यह?

Because इस is the oblique form of यह.

In Hindi, when a pronoun or noun comes before a postposition such as में, से, को, पर, etc., it usually changes into an oblique form.

• यह = this
• इस = of/for/in this, before a postposition

So:

• यह कोच = this coach
• इस कोच में = in this coach

That is why the sentence says इस कोच में, not यह कोच में.

What does में mean here?

में means in or inside.

So:

• इस कोच में = in this coach

It is a postposition, which is the Hindi equivalent of an English preposition.
English puts these words before the noun (in the coach), but Hindi puts them after the noun phrase (कोच में).

Why does Hindi say इस कोच में सीट उपलब्ध है instead of something more like English word order?

Hindi word order is usually Subject/Object + other information + verb at the end.

A very literal breakdown is:

• इस कोच में = in this coach