How do I use FAQ module views with accordion effect?
If the FAQ module uses views to display the answers, then you can install the Views Accordion module, which creates a new plugin in views to render each result.
Views Accordion:

Views Accordion provides a display style plugin for the Views module.
It will take the results and display them as a JQuery accordion, using the first field as the header for the accordion rows.
For Drupal 7 the module integrates the jQuery UI Accordion plugin as a views style plugin. You can configure the options provided by the jQuery UI plugin.
For Drupal 6 the module used it's own jQuery code, so a different set of features is available for D6.