<h1 props={null}>What's happening?</h1>, 
<h1>What's happening?</h1>
, 
<h1 id="component">What's happening?</h1>
, 
<h1 id="element">What's happening?</h1>
" /> <h1>What's happening?</h1>, 
<h1 props={null}>What's happening?</h1>
, 
<h1>What's happening?</h1>
, 
<h1 id="component">What's happening?</h1>
, 
<h1 id="element">What's happening?</h1>
" /> <h1 props={null}>What's happening?</h1>, 
<h1>What's happening?</h1>
, 
<h1 id="component">What's happening?</h1>
, 
<h1 id="element">What's happening?</h1>
" />
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ReactJS - Quiz(MCQ)
What does this React element look like given the following function?

React.createElement('h1', null, "What's happening?");​
A)
<h1 props={null}>What's happening?</h1>
B)
<h1>What's happening?</h1>
C)
<h1 id="component">What's happening?</h1>
D)
<h1 id="element">What's happening?</h1>

Correct Answer :   

<h1>What's happening?</h1>

Recent Updates in React.JS
Q .
What do you need to change about this code to get it to run?
class clock extends React.Component {
  render() {
    return <h1>Look at the time: {this.props.time}</h1>;
  }
}
A)
Remove this
B)
Capitalize clock
C)
Remove the render method
D)
Add quotes around the return value

Correct Answer :   Capitalize clock

Q .
Which Hook could be used to update the document's title?
A)
useEffect(function updateTitle() { document.title = name + ' ' + lastname; });
B)
useEffect(() => { title = name + ' ' + lastname; });
C)
useEffect(function updateTitle() { name + ' ' + lastname; });
D)
useEffect(function updateTitle() { title = name + ' ' + lastname; });

Correct Answer :   

useEffect(function updateTitle() { document.title = name + ' ' + lastname; });