Bangalore: We have already highlighted in our previous articles that Google is one of the companies that give toughest job interview questions. But have you ever wondered that, which are the other companies, apart from Google that places tough interview questions for the applicants? Yes, to make your queries easy Glassdoor.com, a Sausalito, California based workplace culture website, in its new study ranked the toughest companies to interview at, after analyzing user comments about the interview practices of definite organizations.

According to Fins Finance, the toughest companies set their job applicants through several rounds of interviews riddled with brainteasers, technical questions and case study analyses. "You need to go in armed with information and with your eyes as wide open as you can." Says Samantha Zupan, a Glassdoor spokesperson.

Listed below are the toughest companies to have a job interview.

1. McKinsey & Co: McKinsey & Co takes the top spot of the toughest companies for job interviews. The global management consulting firm was founded in 1926 by James O. McKinsey and Marvin Bower. Solving issues of concern to senior management, the company serves as an advisor to many businesses, governments, and institutions. Since 1996 this most prestigious consulting firm in the world has been a top employer for new MBA graduates. McKinsey & Co is also renowned for producing more CEO’s than any other company.