Can const be used for objects and arrays?

Can a variable declared with let be hoisted?

A). Yes, partially

B). No

C). Yes, fully

D). Only in strict mode

Can a let variable be redeclared in the same scope?

A). Yes

B). No

C). Only if it is a string

D). Only if it is a number

What is the primary difference between var and let?

A). Scope

B). Initialization

C). Data type

D). Assignment

What will the following code output: { const a = 10; a = 20; }?

A). 10

B). 20

C). undefined

D). TypeError

What is the scope of a variable declared with let?

A). Global

B). Function

C). Block

D). Object

Which keyword should be used for a variable that might be reassigned?

A). const

B). let

C). var

D). function

Are variables declared with let and const accessible before they are declared?

A). Yes

B). No

C). Only in strict mode

D). Only if they are numbers

Can const variables be reassigned in nested scopes?

A). Yes

B). No

C). Only if they are strings

D). Only in strict mode

What error will the following code produce: const PI; PI = 3.14;?

A). SyntaxError

B). TypeError

C). ReferenceError

D). No error

Which keyword is used to declare a read-only named constant?

A). let

B). var

C). const

D). static