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
Can a const variable be declared without an initial value?
A). Yes
B). No
C). Only in strict mode
D). Only if it is an object
Which keyword allows block-level scope in ES6?
A). var
B). let
C). function
D). var and 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
What is the scope of a variable declared with let?
A). Global
B). Function
C). Block
D). Object
Can const be used for objects and arrays?
A). No
B). Yes
C). Only for arrays
D). Only for objects
Can const variables be reassigned in nested scopes?
A). Yes
B). No
C). Only if they are strings
D). Only in strict mode
What is the primary difference between var and let?
A). Scope
B). Initialization
C). Data type
D). Assignment
Can a variable declared with let be hoisted?
A). Yes, partially
B). No
C). Yes, fully
D). Only in strict mode
What will the following code output: { let y = 5; { let y = 10; console.log(y); } }?
A). 5
B). 10
C). undefined
D). ReferenceError