Johnson Controls interview questions

I applied whole bunch of opening potions on their websites and got a email that they wanted to phone interview me the following week. The HR was very nice and he even left me a voice mail in case I didn't see the email. The first phone interview was very chill, just some brief introduction about my background and asked about my work experience. Then I was progressed into a second round phone interview, but with a mentor who in charged this intern program. He asked some technical skills problems that are related to electrochemistry and my lab experience.