ltcg on property

1) If we are selling a property can we take the sale receipt in the savings account, if yes for how long I can hold in the SB account before deploying in buying of new property? 2) Mr A is father of Mr. B. Mr. B has bought a property and has got total 20 L loan outstanding including Home loan of 14.5 L and 5 L of interior loan. Can Mr A enter as a joint property holder and deploy capital gain for retiring Mr B's Home loan and can get the benefit of LTCG benefit. 3) After Selling a property..