In Drupal how can I create multiple sitemaps for each content type? Suppose I have a content type basic page. I want an sitemap.xml only for this content type. Is it possible?
There's now the module to do that: XML Sitemap per node type
The XML Sitemap Per Node Type module provides the additional context for XML sitemap module that allows creating sitemaps per content type.
The XML Sitemap doesn't support creating multiple arbitrary sitemaps (e.g. a sitemap with only content type X) . What it does support is different contexts in which it makes sense to have a isolated content sitemap (e.g. a Google News sitemap or sitemap in a different language). This needs to be supported at a module level however.
What you can do is exclude content types from inclusion (under the content type edit page on admin/structure/types/manage) in the default sitemap.