The design/planning phase.
Mitigation
Preparedness
Your Q begins "What a phase," which is unclear; did you mean "What phrase..."?
indian government should make a fund for disaster.
None. Disaster management is a good thing that should be encouraged, not prevented.
Not panic.
its oxygen
A nursing home should have a disaster plan in place in case of a disaster. This plan should be submitted to the sate that they operate out of in a timely manner before opening.
the state of visibility
Disaster plans are made up before a disaster happens. Such a plan is details how people should be notified, how risks can be mitigated and what procedure to follow to contain a disaster and restore the situation to normal. It also details how communication should be handled. The role of this plan is to make sure that people know what to do when such a disaster would strike, increasing the efficiency of help organisations and improving reporting after the fact to make sure such a disaster won't happen again.
Some common disaster recovery strategies include making sure a company or business has a disaster recovery plan in place. Depending on how complex an IT structure is, there should be a comprehensive, written documentation on what an organization should do before, during and after a disaster.
Yes, it should, because we can always learn from history.