Hi,
First of all Thanks for all your replies.

This query is related to Moodle.
I have created a tutorial using different types of questions and its working. Grading is also possible in that. But the query is about how to communicate it with moodle.
I want grading to be done in moodle. Can you suggest me some solution for that.

Your best bet is to post this on the moodle forum as the item you're after is a component of moodle.
If you find there that Courselab isn't supplying the info or the format is wrong then come back here.