Hello pramodhcl
To practice virtualization, you can use any laptop with 8 GB RAM and Intel Core i5 or Intel Core i7 processor.
Under 55K INR, you can easily get a laptop with Intel Core i7 processor.
The two available options for you can be:
>
Lenovo B50-70 (with 8 GB RAM and i7 processor)
Or
>
HP Pavilion 15-P045TX (with 4 GB RAM and i7 processor) - RAM can always be upgraded to 8 GB whenever needed.
Hope this helps. Good Luck!!