depreciation under income tax act

No

 

asset is useless then can we writeoff it to p&l a/c is that allowed as deduction under income tax act

assets written off without any monetary consideration cannot be reduced from the block of assets. So NO is the answer

sir can you advice in respect of treatment of such asset

Under income tax act since the block will continue to exist you can claim depreciation thereon even if the asset is discarded for no use. But even if the asset is sold as scrap and some money is received you can reduce the block and if no other assets exist in that block, the resultant amount will become short term capital loss

No, untill its useful life. Such terminal allowance under clause (iii) of section 32 (1) is only allowed to power generating units. But option of discarding off under block of asset may be availed.