Is it possible to invest more than Rs.50 lakhs in the REC/NHAI bonds?

Is it possible to invest more than Rs.50 lakhs in the REC/NHAI bonds?

No. After amendment in the Finance Act (No.2) 2014, it is not possible to invest more than Rs.50 lakhs for benefits under section 54EC of the Act. But you may consider investment u/s 54F or 54.