1. Explain CSS box model. 2. Difference between let, const and var 3. Difference between promise and observable 4. What's async method? 5. How is subject deferent from behaviour subject? 6. Explain closures with example 7. Why DI done in angular 8. How is directive different from component 9. Explain all the Lifecycle hooks in Angular 10. Lazy loading in Angular 11. How to restrict the access to the routes 12. How intercepter works in Angular, what are its uses? 13. What's an async pipe 14. What's the difference between display block and display inline 15. Explain all the display properties 16. What's a function and a mixin in SCSS 17. How does one use set of SCSS class properties in other class/classes 18. Difference between visibility hidden and display none . . And lot more basic questions on Angular, HTML and JS There were some questions on AngularJS(v 1.x)