1. What is the value of an uninitialized variable

null
undefined
0
None Of the Above

2. let digitsArray=[1,2,3,4];
delete(digitsArray[2]);
console.log(digitsArray.length);

3
4
2
None Of the Above

3. What is the value of typeof(undefined)

null
undefined
0
None of the Above

4. let digits=[1,2,3,4];
digits.splice(2,1);
console.log(digits.length);

3
4
2
None Of the Above

5. typeof(null) = ?

null
undefined
object
None of the Above

6. What is the value of '5'+1

"51"
51
"6"
6

7. How '===' compares operands

Checks Value
Checks Type
Checks value and Type
None of the Above

8. Which of the following is chrome brower's javascript Engine

Spidermonkey
V8
Chakra
None of the above

9. Are global variables allowed in strict mode?

Allowed
Not Allowed
Patially allowed
None of the above

10. Which of the following is firefox's javascript engine

Spidermonkey
V8
Chakra
None of the above