Dear Karthik,
You can use the below function to lookup the right side items using vlookup. However, you have a choice of using Index & match.
=VLOOKUP(A2,CHOOSE({1,2},Sheet1!$B$2:$B$11,Sheet1!$A$2:$A$11),2,0)
Please find the attached excel format and download with the same example
Thanks
Regards,
Saran