Re-invesment of LTCG amout out of Residential property into commerical plot or shop/Industrial Gala

1. No. can't save LTCG.

2. Any residential HP

3. Yes, invest the LTCG amount in Capital Gain bonds of NHAI, PFC etc. and rest of amount as per your wish.

Dhirajlal ji, 

Thanks for your proper advice. I prefer below your suggested option for capital gain from sale of residential property. 

3. Yes, invest the LTCG amount in Capital Gain bonds of NHAI, PFC etc. and rest of amount as per your wish.
 

Now another Query:

a) Should I open new a/c in bank under Capital Gain Account Scheme under section 54 EC.

Then let buyer deposit all money in that a/c and then invest from their to Govt. Bonds - to save long term capital gain.

Thanks.

You cannot invest in LT capital gain bonds from Capital gain account scheme. Both are under different schemes.