15 June 2011
This is a sweping question and cannot be explained over post, suggest you refer AS 28 or IAS 36 on this topic which provides exhaustive guidance. Further annual reports of some European listed companies also elaborate on this topic
15 June 2011
Testing for impairment of asset means evaluation process to judge the value as on balance sheet date and the carrying value is more than the assessed value means there is impairement in assets and then recognize the difference as a loss