Gold batch Quiz 5

1. What is the data type of the value null in JavaScript?

• a) "null"

• b) "object"

• c) "undefined"

• d) "boolean"

2. Which of the following is a primitive data type in JavaScript?

• a) Object

• b) Array

• c) String

• d) Function

3. What will typeof NaN return?

• a) "NaN"

• b) "undefined"

• c) "number"

• d) "object"

4. Which function declaration syntax is correct in JavaScript?

• a) def myFunc() {}

• b) function:myFunc() {}

• c) function myFunc() {}

• d) func myFunc() {}

5. What does typeof undefined return?

• a) "null"

• b) "undefined"

• c) "object"

• d) "string"

6. Which of the following is not a primitive data type in JavaScript?

• a) Boolean

• b) String

• c) Object

• d) Number

7. What does the typeof operator return for an undeclared variable?

• a) "undefined"

• Error

• c) "null"

• d) "object"

8. Which method can be used to convert a string to an integer in JavaScript?

• a) parseInt()

• b) int()

• c) toInteger()

• d) convert()

What type is returned by typeof true?

• a) "number"

• b) "string"

• c) "boolean"

• d) "truthy"

Which data type is used to store true/false values?

• a) String

• b) Number

• c) Boolean

• d) Null