Dear Laxmi,
Yes you are eligible for the post graduate Diploma In Disaster Management if you have done B.Tech in Mechanical Engineering.
For most of the post graduate courses in Disaster Management, the basic requirement is that Candidates must have a B.E/B.Tech. in (Civil, Structural, Mechanical, Industrial, Chemical Engineering/Computer Science or equivalent, B.Arch. & B.Planning) to pursue mtech in this programme.
So yes most probably you are eligible for Post Graduation Diploma In Disaster Management.
I hope this information helps you.
To know more about this course, you can go through the link below.
https://www.careers360.com/courses/disaster-management-course
All the very best!!
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