Q: If a get a ipad mini with wifi   cellular model can i insert a GSM sim card avialble i my country india

Have you read my reply on your duplicate thread : https://discussions.apple.com/message/22097599#22097599

If the iPhone 5 is sold in India then that implies nano-sim cards are available there - the iPad Mini takes the same size sim as the iPhone 5

What sim card a device uses : http://support.apple.com/kb/HT5554

If the carrier does nano-sims then yes - as the iPhone 5 uses nano-sims, then any carrier in India that sells (or on which you can use) iPhone 5s should be able to supply you with a nano-sim for an iPad Mini.

Have you checked on the site of the carrier that you'd like to use to see if they sell the iPad Mini and/or nano-sims to use with it ?

I don't know which carriers are in India, and which ones have nano-sims.

Are you currently in the US ? The Apple stores don't ship overseas.

There are two models of cellular iPad Minis sold in the US. One is aimed at the CDMA carriers in the US (Verizon, Sprint), the other one GSM (e.g. AT&T) - both have a nano-sim slot, and both cover the same GSM bands (the bands are listed here).

As far as I know all iPads are unlocked, but it you buy it direct from a carrier (as opposed from, for example, Apple) then you may have to sign up to a contract with the carrier.