Deloitte Digital Front End Developer interview questions

First round was visual interview they asked me all these technical questions on javascript, css, bootstrap, html they asked me about any js framework but I had no idea about it so please find these questions it might be useful for your interview 1) what is a responsive website 2) javascript hoisting 3) html5 features uses example 4) inheritance in JavaScript 5) types of inheritance in js example uses 6) how to call the methods of parent class in inheritance 7) class name will work only in es6 in es5 how they use 8)different ways of creating objects 9) css3 properties used 10) <div a> img <div b> text </div> </div> text should be on top of img in center how to use that how do we do in css 11) ways of adding script tag 12) LESS 13)SASS 14) advantage of using bootstrap to make responsive without bootstrap to make it responsive wch is better 15) typeof arr=[a,b,c] output: returns object 16) check if it is palindrome in javascript