CBSE Class 11 Computer Science Python Revision MCQs Set 03

Question. Is Python case sensitive while dealing with identifiers?
(a) Yes
(b) No
(c) OS dependent
(d) None of the above
Answer: (a)

Question. What is the output of the following code?
xx = 15
if True:
    xx = 25
print(xx)
(a) 25
(b) 15
(c) Error
(d) None
Answer: (a)

Question. Output of print(f"Python {3 + .2}")
(a) 3.2
(b) 3+.2
(c) Shows error
(d) Python 3.2
Answer: (d)

Question. Which of the following is an invalid variable?
(a) _var_
(b) 1var
(c) _var_1
(d) All the above
Answer: (b)

Question. Which of the following is an invalid statement?
(a) a_b_c = 100
(b) abc = 100, 'python'
(c) a b c = 1 00
(d) a, b, c = 1, 0, 0
Answer: (c)

Question. Which of the following statements assigns the value 100 to the variable x in Python:
(a) let x = 100
(b) x := 100
(c) x ← 100
(d) x = 100
(e) x << 100
Answer: (d)

Question. In Python if a variable is assigned a value anywhere within the function’s body, it’s assumed to be a local unless explicitly declared as global.
(a) True
(b) False
Answer: (a)

Question. Which of the following is true for variable names in Python?
(a) all private members must have leading and trailing underscores
(b) underscore and ampersand are the only two special characters allowed
(c) unlimited length
(d) none of the mentioned
Answer: (c)

Question. Which of the following is not a complex number?
(a) a = 2 + 3j
(b) a = complex(2, 3)
(c) a = 2 + 3l
(d) a = 2 + 3J
Answer: (c)

Question. Boolean type is a subtype of Integer data type in Python
(a) True
(b) False
Answer: (a)

Question. What is the result of round(0.5) - round(-0.5)
(a) 1.0
(b) 2.0
(c) 0.0
(d) None of the mentioned
Answer: (c)

Question. Given a function that does not return any value, What value is thrown by default when executed in shell.
(a) int
(b) bool
(c) void
(d) None
Answer: (d)

Question. Select all immutable basic data types:
(a) Dictionary
(b) String
(c) Integer
(d) Set
(e) Float
(f) List
(g) Tuple
Answer: (b), (c), (e), (g)

Question. What gets printed?
p = "abb "
q = 2
print(p + q)
(a) abb
(b) abb abb
(c) abb 2
(d) 2
(e) Error
Answer: (e)

Question. What gets printed
axa = {}
print(type(axa))
(a) <class 'set'>
(b) <class 'dict'>
(c) <class 'list'>
(d) <class 'tuple'>
(e) <class 'object'>
Answer: (b)

Question. In order to store values in terms of key and value which core data type is used.
(a) list
(b) tuple
(c) class
(d) dictionary
Answer: (d)

Question. What will be the output of the following Python code snippet?
def example(x):
x = x + '2'
x = x*2
return x
>>>example("hello")
(a) indentation Error
(b) cannot perform mathematical operation on strings
(c) hello2
(d) hello2hello2
Answer: (a)

Question. If x and y are strings, which of the following is equivalent to [x] + [y] ?
(a) [x].extend([y])
(b) [x,y]
(c) [x + y]
(d) [x].append(y)
Answer: (b)

Question. What gets printed?
def x(): pass
print(type(x()))
(a) <class 'function'>
(b) <class 'tuple'>
(c) <class 'NoneType'>
(d) <class 'str'>
(e) <class 'type'>
Answer: (c)

Question. Which of the following is incorrect?
(a) a = 0b101
(b) a = 0x4f5
(c) a = 19023
(d) a = 03964
Answer: (d)

Question. In order to execute an operation over arguments of different data types, convert all of them to the same type beforehand.
(a) True
(b) False
Answer: (b)

Question. What gets printed?
axx = (5, 6, 7)
print(type(axx))
(a) <class 'int'>
(b) <class 'list'>
(c) <class 'tuple'>
(d) <class 'dict'>
(e) <class 'set'>
Answer: (c)

Question. What should the below code print?
print(type(2J))
(a) <class 'complex'>
(b) <class 'unicode'>
(c) <class 'int'>
(d) <class 'float'>
(e) <class 'dict'>
Answer: (a)

Question. Select all valid basic data types in Python 3
(a) Double
(b) String
(c) Integer
(d) Boolean
(e) Float
(f) Decimal
(g) Union
(h) Complex number
Answer: (b), (c), (e), (h)

Question. Select all numeric data types in Python
(a) String
(b) Integer
(c) Double
(d) Float
(e) Complex number
Answer: (b), (d), (e)

Question. What error occurs when you execute the following Python code snippet?
dog = cat
(a) SyntaxError
(b) NameError
(c) ValueError
(d) TypeError
Answer: (b)

Question. What is the return value of trunc()?
(a) int
(b) bool
(c) float
(d) None
Answer: (a)

Question. What gets printed?
print(type(2/3))
(a) <class 'int'>
(b) <class 'number'>
(c) <class 'float'>
(d) <class 'double'>
(e) <class 'tuple'>
Answer: (c)

Question. What is the output of print 0.2 + 0.3 == 0.5?
(a) True
(b) False
(c) Error
Answer: (a)

Question. Which of the following is incorrect?
(a) float('inf')
(b) float('nan')
(c) float('56'+'78')
(d) float('12+34')
Answer: (d)

Question. Complex numbers in Python have real and imaginary parts. In Python they are represented as:
(a) One Integer and one floating point number
(b) Each is floating point number
(c) Each is Integer
(d) Both are strings
Answer: (c)

Question. List in Python can hold elements of same type only. True or False?
(a) True
(b) False
Answer: (b)

Question. Strings in Python should be en-quoted in double quotation marks (“). True or False?
(a) True
(b) False
Answer: (b)

Question. What data type is the object below?
P = [2, 22, 'python', 2]
(a) list
(b) dictionary
(c) array
(d) tuple
Answer: (a)

Question. What is the output of the following code?
print(type(lambda:None))
(a) <class 'NoneType'>
(b) <class 'tuple'>
(c) <class 'type'>
(d) <class 'function'>
(e) <class 'bool'>
Answer: (d)

Question. Which of the following data types can be used as keys in dictionaries in Python? Select all that apply
(a) List
(b) Set
(c) Integer
(d) String
(e) Dictionary
(f) Any type of value
Answer: (f)

Question. What does \( \sim\sim\sim\sim\sim\sim6 \) evaluate to?
(a) 6
(b) -5
(c) -11
(d) 11
Answer: (a)

Question. Which of the following results in a SyntaxError?
(a) ‘”Once upon a time…”, she said.’
(b) “He said, ‘Yes!'”
(c) ‘3\’
(d) ”’That’s okay”’
Answer: (c)

Question. In Python types are directly interpreted by the compiler, so check the following operation to be performed.
a = 15 ? 3
Objective is to make sure a has a integer value, select all that apply (Python 3.xx)
(a) a = 15 // 3
(b) a = int(15 / 3)
(c) a = 15 % 3
(d) All of the mentioned
Answer: (d)

Question. Only immutable data types can be used as keys for dictionaries in Python. True or False?
(a) True
(b) False
Answer: (a)

Question. What does \( 3 \wedge 8 \) evaluate to?
(a) 81
(b) 24
(c) 11
(d) 5
Answer: (c)

Question. What is the type of inf?
(a) Boolean
(b) Integer
(c) Float
(d) Complex
Answer: (c)

Question. Which of the following can be used as a dictionary key?
(a) list
(b) set
(c) dictionary
(d) tuple
(e) None of the above
Answer: (d)

Question. Which of the following will run without errors?
(a) round(45.8)
(b) round(6352.898,2,5)
(c) round()
(d) round(7463.123,2,1)
Answer: (a)

Question. What is the return type of function id?
(a) int
(b) float
(c) bool
(d) dict
Answer: (a)

Question. What does \( \sim5 \) evaluate to?
(a) -5
(b) -7
(c) -6
(d) 5
Answer: (c)

Question. Which of these in not a core data type?
(a) Lists
(b) Dictionary
(c) Tuples
(d) Class
Answer: (d)

Question. What is the output of the following code?
print(type([2,3]))
(a) <class 'tuple'>
(b) <class 'int'>
(c) <class 'set'>
(d) <class 'complex'>
(e) <class 'list'>
Answer: (e)