MCQs on Variables and Data Types | Python programming

Which of the following is a valid variable name in Python?
- a) 2variable
- b) my_variable
- c) @variable
- d) variable-1
In Python, variables are:
- a) Type-bound
- b) Object-bound
- c) Value-bound
- d) Constant-bound
What will be the result of the following code: x = 5; x = 10?
- a) Syntax error
- b) 10
- c) 5
- d) Both 5 and 10
Which of the following is used to declare a constant in Python?
- a) const keyword
- b) readonly keyword
- c) All caps variable names by convention
- d) No such concept in Python
Which of the following data types are immutable in Python?
- a) List
- b) Tuple
- c) Dictionary
- d) Set

Which of the following is not a built-in data type in Python?
- a) List
- b) Set
- c) Array
- d) Dictionary
What is the default value of a variable if it is not initialized in Python?
- a) None
- b) Null
- c) Undefined
- d) 0
Which of the following is a mutable data type in Python?
- a) String
- b) Tuple
- c) List
- d) Integer
What type of object is returned when performing division in Python 3?
- a) Integer
- b) Float
- c) Complex
- d) String
What is the output of the following code: type("Hello World")?
- a) str
- b) string
- c) type
- d) text

Which of the following functions is used to convert a string to an integer in Python?
- a) int()
- b) str()
- c) float()
- d) convert()
What is the result of the expression int("10") + 2.5?
- a) 12
- b) 12.5
- c) TypeError
- d) 10.5
Which of the following functions is used to convert an integer to a string in Python?
- a) str()
- b) float()
- c) int()
- d) convert()
What will the following code print? print(float("3.14") + 2)
- a) 5.14
- b) 5
- c) 3.14
- d) 2.14
Which function is used to convert a value to a boolean in Python?
- a) bool()
- b) int()
- c) float()
- d) str()

What is meant by dynamic typing in Python?
- a) Variables are explicitly typed at declaration
- b) Variables can hold any data type at runtime
- c) The type of a variable is defined by its value
- d) None of the above
Which of the following statements about dynamic typing in Python is true?
- a) Variables must be declared with their type
- b) Type information is associated with variables
- c) Variables can change their type during execution
- d) All variables are of type None
In Python, which of the following will raise a TypeError?
- a) Adding an integer to a string
- b) Adding two integers
- c) Adding two floats
- d) Adding a string to a string
Which of the following does Python allow in terms of data types?
- a) Strongly typed
- b) Weakly typed
- c) Explicitly typed
- d) None of the above
What is the result of the following code: a = 5; a = "Hello"; print(a)?
- a) 5
- b) Hello
- c) SyntaxError
- d) TypeError

Which function is used to take user input in Python?
- a) read()
- b) input()
- c) get_input()
- d) scan()
What will be the result of the following code: input("Enter your name: ")?
- a) Displays a prompt and returns a string entered by the user
- b) Returns the name directly
- c) Raises an exception
- d) Returns nothing
How would you print the result of an addition operation in Python?
- a) print(5 + 5)
- b) display(5 + 5)
- c) echo(5 + 5)
- d) output(5 + 5)
How do you format strings in Python 3.6 and later?
- a) f"Hello, {name}"
- b) "Hello, {name}".format()
- c) %s operator
- d) str.format()
What is the output of the following code: print("Value of x is:", 5)?
- a) Value of x is: 5
- b) Value of x is
- c) 5
- d) Value of x is: 5.0

Which function is used to read all lines from a file in Python?
- a) read()
- b) readlines()
- c) input()
- d) getlines()
In Python, which method can be used to print text without a newline at the end?
- a) print("text", end="")
- b) echo("text")
- c) output("text")
- d) display("text")
How do you write data to a file in Python?
- a) write()
- b) writelines()
- c) output()
- d) Both a and b
What is the function used to convert input from the user into an integer?
- a) int()
- b) input()
- c) str()
- d) float()
Which of the following is a correct way to display the value of a variable x with formatted output in Python?
- a) print(f"x = {x}")
- b) print("x = x")
- c) print("x:", x)
- d) All of the above

Qno	Answer
1	b) my_variable
2	b) Object-bound
3	b) 10
4	c) All caps variable names by convention
5	b) Tuple
6	c) Array
7	a) None
8	c) List
9	b) Float
10	a) str
11	a) int()
12	b) 12.5
13	a) str()
14	a) 5.14
15	a) bool()
16	b) Variables can hold any data type at runtime
17	c) Variables can change their type during execution
18	a) Adding an integer to a string
19	b) Weakly typed
20	b) Hello
21	b) input()
22	a) Displays a prompt and returns a string entered by the user
23	a) print(5 + 5)
24	a) `f"Hello, {name}"`
25	a) `Value of x is: 5`
26	b) readlines()
27	a) `print("text", end="")`
28	d) Both a and b
29	a) int()
30	d) `All of the above`

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