What is a primitive value in JavaScript?

Which of the following statements about primitive values in JavaScript is true?

A). They are mutable

B). They are passed by reference

C). They are stored on the heap

D). They are immutable

What is the result of the expression true == 1 in JavaScript?

A). true

B). false

C). Error

D). 1

What is the default value of a variable in JavaScript if it is not initialized?

A). null

B). undefined

C). 0

D). 'undefined'

What is the data type of the value NaN in JavaScript?

A). Number

B). String

C). Object

D). Undefined

Which of the following statements is true about JavaScript's null value?

A). It represents an empty string

B). It represents a non-existent value

C). It represents a boolean value

D). It represents a number

Which of the following is a valid JavaScript symbol?

A). symbol

B). &symbol

C). #symbol

D). Symbol('description')

What is the result of the expression true + false in JavaScript?

A). true

B). false

C). 1

D). 0

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

A). Array

B). Object

C). Function

D). String

Which of the following is not a primitive value in JavaScript?

A). Number

B). Boolean

C). Object

D). String

Which primitive value represents absence of value or no value assigned?

A). undefined

B). null

C). 0

D). 'undefined'