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Question 1:  How many primary data types are there in JavaScript?

(A) 6

(B) 7

(C) 8

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

(A) Object

(B) Number

(C) Array

Question 3:  What is the default value of an uninitialized variable in JavaScript?

(A) null

(B) undefined

(C) 0

Question 4:  Which data type is used to store true or false values?

(A) String

(B) Boolean

(C) Number

Question 5:  Which of the following is NOT a valid data type in JavaScript?

(A) Symbol

(B) Float

(C) Undefined

Question 6:  How do you check the data type of a variable in JavaScript?

(A) typeof

(B) datatypes()

(C) checkType()

Question 7:  What is the data type of null in JavaScript?

(A) Object

(B) Null

(C) Undefined

Question 8:  Which data type is used to store multiple values in a single variable?

(A) String

(B) Object

(C) Array

Question 9:  What will be the output of typeof NaN in JavaScript?

(A) NaN

(B) Number

(C) Undefined

Question 10:  Which statement is true about JavaScript data types?

(A) JavaScript is statically typed.

(B) JavaScript is dynamically typed.

(C) JavaScript does not support data types.