How to use the snippet
Paste the generated <script type="application/ld+json">…</script> block inside the <head> of the page that contains the FAQs. Google requires the same questions and answers to be visible in the page body — schema-only FAQs trigger a structured-data warning.
Test the result with Google's Rich Results Test.
FAQ
How many FAQs should I include?
3–10 is the sweet spot. Google won't display FAQ rich results on every page, but having well-structured Q&A increases the chance.