SkillCert

{{globals.currentUser.fullname}} Login/Create Account

{{tab.title}} {{tab.title}}
Contact
Logout

❌

Create account

Login

Forgot password

{{msg}}

Test title

Submit

Previous | Next

What Enrico Fermi invented?

A: X ray machine

B: Betatron

C: Cyclotron

D: Nuclear reactor

Explanation: Invented in 1942.