Not yes! BCCI will talk with ECB for test matches. So at the moment only ODI series suspended and They are trying to play test match after few weeks.
Yes only ODI has been cancelled and tests will be played.They may not play in mumbai.I think venue will be change for 2nd test.
I think there are 3 spot which likely be host second test match. Jaipur Delhi Chennai. Let's see what ECB say.
Well only problem is weather and they Faced Nisha and damaged in many parts and rain will effect the match.
I think you should read this: http://www.ptinews.com/pti\ptisite.nsf/0/EC740D46C9B48C066525750F0038B1B2?OpenDocument You will get idea.