Questions & Answers about Eso no es verdad.
Why is the word eso used here instead of ese or esa?
Why do we use es (from the verb ser) instead of está?
We use ser because we are stating a core fact about the statement. Being "true" or "false" is considered an inherent quality or characteristic of the idea itself, rather than a temporary state, so it requires ser.
The word verdad is a noun meaning "truth." Why is it translated as the adjective "true"?