Capital gain

Yes, you can take advantage of section 54, because of amendment in finance act, 2017. It will be treated as long term capital gains. So no tax liability when you purchase another house property within specified period.

One more thing sir, the maximum period in which I can buy the another ready to move property. Also the amount of property which is required to take income tax liability at zero.

1.   TWO years from the date of sale

2.  22 lakhs if the property to be sold is ready apartment.

I am required to buy ready to move apartment for Rs. 22 lacs as replied above means Rs. ( 45 - 20 = 25). That means balance of Rs. 3 lacs attributes towards indextion from the date of purcahase 28th May 2015. Am I right sir!

Yes indexation for the 2 years, but estimated (as CI for FY 2017-18 yet to be declared.)