Acid strength of hydrides:
Down any group, acid strength increases due to weakening of E–H bond. Therefore:
\(\text{H}_2\text{Se} > \text{H}_2\text{S}\) (Se is below S)

So saying \(\text{H}_2\text{S} > \text{H}_2\text{Se}\) is incorrect — it reverses the correct trend.

HI > HBr > HCl is correct (bond strength decreases down group 17). \(\text{H}_2\text{Te} > \text{H}_2\text{S}\) is also correct.