Hi may i know what is the terms and conditions to apply multi entry within 6 months validity?

There is no specific terms and conditions to apply a multiple entry with 6 months validity. You can also apply for it for traveling purpose.

However, for visiting purpose, a single entry Tourist L is issued with 3 months validity and 30 days' duration of stay. Anyway, you can have a try for applying it and then wait for the final result from the embassy.