In technical round1:- 1. Reverse a string and put underscore on spaces in javascript. 2. Count length of substring having same characters and append it after the single character in a new string. eg. i/p:SSIIIT, o/p - S2I3T1. Was told to write the code in javascript 3. Design the database and class diagram for a college website. 4. What is virtual DOM. 5. what are the types of react hooks and where are they used? The first round went on for around 50 minutes Technical round 2:- I was asked only one puzzle and the interview duration was only 10 minutes. Link of the puzzle:-https://www.popularmechanics.com/science/math/a24208/riddle-of-the-week-6/ HR round:- 1. Questions about your family. 2. Why do you want to join mindfire?