Is entittyfieldquery result can be loaded into select list? Trying to populate select list in VBO action form (basically could be anyform) and using enityfieldquery to get list. By this methods $result object contains node arrays.  

Can this array can be loaded into select list directly? or we need to apply node_load_multiple on $results array.    

Reason why I am asking is, there are many field and for the select list, only title and nid is enough right?

Are there any workaround for this?
Can this array can be loaded into select list directly? or we need to apply node_load_multiple on $results array.

A FAPI select list expects an Array with id and title. An entityfieldquery returns only a list of IDs unless you get creative. Typically you perform extra work to load fields you want to show as text in your select field. You can do this via SQL, node_load a view resultset ... whatever means you're comfortable with.

EDIT

Well I didnt say you have to use node load. There are various extensions to EFQ that let you use community created EFQ classes:


The most recent is https://www.drupal.org/sandbox/mikeytown2/2209909
A slightly older less pretty module is https://www.drupal.org/project/efq_extra_field