1. Only if the model is also sold in India. If it's not, the warranty cannot be transferred. Additionally, be VERY careful that you can track its origin - if you cannot (i.e., the service tag comes up invalid), the warranty won't transfer.
2. You must purchase at least a year's onsite service in order to transfer the warranty internationally. The basic 12-month warranty is valid only in the country of original sale.
For the cost, contact Dell India and have the service tag handy when you do.