Which symbol is used to represent a boolean value in JavaScript?

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

A). Array

B). Object

C). Function

D). String

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

A). Number

B). String

C). Object

D). Undefined

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

A). Number

B). Boolean

C). Object

D). String

What is a primitive value in JavaScript?

A). A complex data structure

B). A basic data type

C). A function

D). An array

Which of the following is a valid JavaScript symbol?

A). symbol

B). &symbol

C). #symbol

D). Symbol('description')

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

A). String

B). Object

C). Undefined

D). Number

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

A). null

B). undefined

C). 0

D). 'undefined'

What does the Symbol data type represent in JavaScript?

A). A unique identifier

B). A number

C). A boolean value

D). An object

What happens when you add two numbers using the + operator in JavaScript?

A). The numbers are concatenated

B). The numbers are multiplied

C). The numbers are added

D). An error occurs

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

A). true

B). false

C). Error

D). 1