MCQs on Functions and Scope | Python programming

Which of the following is the correct syntax to define a function in Python?
- a) def functionName[]:
- b) def functionName():
- c) functionName def():
- d) def functionName:
What does the def keyword do in Python?
- a) Defines a function
- b) Declares a variable
- c) Creates an object
- d) Starts a loop
What is the output of the following code?
def greet(): print("Hello!") greet()
- a) Error
- b) Hello!
- c) None
- d) Nothing
How do you call a function named example?
- a) example;
- b) call example()
- c) example()
- d) call example
Which statement is true about Python functions?
- a) Functions must always return a value
- b) Functions do not need parentheses
- c) Functions must be defined before they are used
- d) Functions in Python are not reusable

What is a parameter in a function?
- a) The value passed to the function
- b) A variable defined inside the function
- c) The name defined in the function signature
- d) The type of the function
What is an argument in a function?
- a) A name defined in the function signature
- b) The return value of a function
- c) The value passed to a function during a call
- d) A type of variable
What will be the output of the following code?
def add(a, b): return a + b print(add(5, 3))
- a) 8
- b) 5
- c) 3
- d) Error
Which of the following is the correct way to pass arguments to a function?
- a) function(arg1, arg2)
- b) function{arg1, arg2}
- c) function[arg1, arg2]
- d) function<arg1, arg2>
What will be the output of the following code?
def print_info(name, age): print(name, age) print_info("John", 25)
- a) John 25
- b) Error
- c) name age
- d) None

What is the purpose of the return statement in a function?
- a) To exit the function
- b) To pass the value back to the caller
- c) To print output
- d) To stop execution of the program
What will the following code return?
def multiply(x, y): return x * y result = multiply(4, 5) print(result)
- a) 45
- b) 20
- c) 4
- d) None
Can a function return multiple values in Python?
- a) Yes, by using a list
- b) No, only one value can be returned
- c) Yes, by separating values with commas
- d) Yes, using multiple return statements
What will be the output of the following code?
def square(x): return x * x print(square(6))
- a) 6
- b) 36
- c) 12
- d) Error
What happens if a function does not have a return statement?
- a) It returns None by default
- b) It causes an error
- c) It returns a random value
- d) It exits the program

What is the correct syntax for defining a lambda function in Python?
- a) lambda x, y: x + y
- b) function lambda(x, y) {return x + y}
- c) def lambda(x, y): return x + y
- d) lambda: return x + y
How is a lambda function different from a regular function?
- a) Lambda functions can only return a value, whereas regular functions can print as well
- b) Lambda functions are anonymous and don’t need a name
- c) Lambda functions cannot take arguments
- d) Lambda functions are slower than regular functions
What will be the output of the following code?pythonCopy codeadd = lambda x, y: x + y print(add(3, 5))
- a) 35
- b) 8
- c) 0
- d) Error
Can a lambda function have multiple statements?
- a) Yes, with the return keyword
- b) No, it can only have one expression
- c) Yes, by using semicolons
- d) No, it is only for calculations
Which of the following is true about lambda functions in Python?
- a) They are faster than regular functions
- b) They can only have one parameter
- c) They can be used in places where functions are not required
- d) They are used for variable declarations

What is recursion in programming?
- a) A function calling itself
- b) A function calling another function
- c) A loop calling itself
- d) A program calling another program
What is the base case in recursion?
- a) A condition where recursion stops
- b) A function that calls itself
- c) A loop that repeats the process
- d) A case where the function takes no arguments
What is the output of the following recursive function?
def factorial(n): if n == 0: return 1 else: return n * factorial(n - 1) print(factorial(4))
- a) 4
- b) 24
- c) 10
- d) 120
Which of the following can result in a recursion error?
- a) When the function doesn’t have a base case
- b) When the function returns a value
- c) When the function is called multiple times
- d) When the function is not defined correctly
What is the risk of deep recursion?
- a) It can result in stack overflow
- b) It makes the program faster
- c) It requires less memory
- d) It optimizes the function’s performance

What is a global variable in Python?
- a) A variable declared inside a function
- b) A variable declared outside of all functions
- c) A variable that can only be used inside the main program
- d) A variable that cannot be used inside functions
Which of the following statements about local variables is correct?
- a) Local variables are accessible from anywhere in the program
- b) Local variables are only accessible within the function they are declared in
- c) Local variables are only accessible inside loops
- d) Local variables do not have a scope
How can you modify a global variable inside a function?
- a) By using the global keyword
- b) By passing the variable as an argument
- c) By returning the modified value
- d) By redefining the variable inside the function
What is the scope of a variable defined inside a function?
- a) Local scope
- b) Global scope
- c) Module scope
- d) Block scope
What will be the output of the following code?
x = 5 def my_function(): global x x = 10 my_function() print(x)
- a) 5
- b) 10
- c) Error
- d) None

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