Depreciation

Since the old block is nil, that is assets in that block has been depreciated fully hence, you will have to provide depreciation only for the new asset purchased, as per the policy (i.e, WDV, SLM) of the company.

ya agree wid manish since the block is not exist hence depreciation cannot be claimed thereon now..

Suppose new asset is purchased for Rs 65000. So Depreciation will be fully provided Rs 65000 , means asset will be zero at the end or on Rs 65000 at prescribed rate. ..

No its not like that, you cannot depreciate a asset @ 100%, unless it is a fully depreciable asset, you should provide deprecation at the prescribed rates,