To display different FAQs for each product, Please follow steps below provided with screenshot

Step 1 :

Go to Store Admin –> Content –> Metaobjects -> Click on “Add definition

Create a metaobject faqs and then add field question and answer as below

Add question field as shown below

Add answer field as shown below

Step 2:

Now go to Metafields and metaobjects and create a metafield definition for metaobject Faqs created in steps 1.

Go to Store Admin –> Settings –> Metafields and metaobjects –> Click Products -> Click on “Add definition

Step 3:

Please navigate to your products and scroll down to the metaobject list labeled “FAQs”. Select faqs and click save

Step 4 :

Now go to product page from theme customize, Click in Product Tabs section and Add block “FAQ’s” and click save.