R4RIN – MCQs, Mock Tests | Python Dictionary Python MCQ set 1

Keys of dictionary must be _______________

1. antique
2. unique
3. mutable
4. integers

✅ Correct Answer: 2

Dictionaries in python are _______

1. Mutable data type
2. Non-Mutable data type
3. Mapping data type
4. Both a and c

✅ Correct Answer: 4

Which of the following is used to delete an element from Dictionary?

1. pop( )
2. delete
3. remove
4. None of the above

✅ Correct Answer: 1

Which statement is used to create an empty dictionary? a.

1. d1 = { }
2. d1 = ( )
3. d1 = dict{ }
4. d1 = [ ]

✅ Correct Answer: 1

Dictionary is a ___________ data type.

1. Sequence
2. Mapping
3. Ordered
4. None of the above

✅ Correct Answer: 2

Write the output of the following : d1 = {"a" : 50, "b" : 50} d2 = {"a" : 500, "b" : 50} print(d1 > d2)

1. True
2. False
3. Error
4. None of the above

✅ Correct Answer: 3

Key – value concept is in ____

1. List
2. String
3. Dictionary
4. Tuple

✅ Correct Answer: 3

In dictionary Keys and values are separated by ________________

1. Colon (:)
2. Comma( ,)
3. Semicolon(;)
4. dot(.)

✅ Correct Answer: 1

All elements in dictionary are separated by _________

1. Semicolon(;)
2. Comma( ,)
3. Semicolon(;)
4. dot(.)

✅ Correct Answer: 2

Which of the following is an example of dictionary?

1. L = [ ]
2. C = ( )
3. D = { }
4. None of the above

✅ Correct Answer: 3

1,2,3 are the ______________ in the following dictionary. D = {1 : “One”, 2 : “Two”, 3 : “Three”}

1. Keys
2. Values
3. Items
4. None of the above

✅ Correct Answer: 1

Keys in dictionary are _____________ .

1. Mutable
2. Immutable
3. antique
4. integers

✅ Correct Answer: 1

What type of error is returned by the following code : a={'a' : "Apple", 'b' : "Banana" , 'c' : "Cat"} print(a[1])

1. KeyError
2. KeyNotFoundError
3. NotFoundError
4. Syntax Error

✅ Correct Answer: 1

Write the output of the following code : a={'a' : "Apple", 'b' : "Banana" , 'c' : "Cat"} a['a']="Anar" print(a)

1. {‘a’: ‘Anar’, ‘b’: ‘Banana’, ‘c’: ‘Cat’}
2. Error
3. {‘a’ : “Apple, ‘a’: ‘Anar’, ‘b’: ‘Banana’, ‘c’: ‘Cat’}
4. None of the above

✅ Correct Answer: 1

Traversing a dictionary can be done using ____________

1. if statement
2. loop
3. jump statement
4. None of the above

✅ Correct Answer: 2

The following code will return data as ______________

1. List
2. Tuple
3. Dictionary
4. None of the above

✅ Correct Answer: 1

Write the output of the following code : A = {1 : "One", 2 : "Two", 3 : "Three"} B = {'A' : "Apple", 'B' : "Bat", 'C' : "Cat", 'D' : "Doll"} A.update(B) #print(B.values()) print(B)

1. {‘A’ : ‘Apple’ , ‘B’ : ‘Bat’ , ‘C’ : ‘Cat’ , ‘D’ : ‘Doll’}
2. {1 : “One” , 2 : “Two” , 3 : “Three”}
3. {1: ‘One’ , 2: ‘Two’ , 3: ‘Three’ , ‘A’: ‘Apple’ , ‘B’: ‘Bat’ , ‘C’: ‘Cat’ , ‘D’: ‘Doll’}
4. None of the above

✅ Correct Answer: 1

Write the output of the following code : A = {1 : "One", 2 : "Two", 3 : "Three"} B = {'A' : "Apple", 'B' : "Bat", 'C' : "Cat", 'D' : "Doll"} print(A.get(4,"Key Not Found"))

1. KeyError
2. Key Not Found
3. None
4. Syntax Error

✅ Correct Answer: 2

Write the output of the following: A = {1 : "One", 2 : "Two", 3 : "Three"} B = {'A' : "Apple", 'B' : "Bat", 'C' : "Cat", 'D' : "Doll"} for i in A: print(i)

1. 1 2 3
2. 1 2 3
3. {1 : “One”, 2 : “Two”, 3 : “Three”}
4. None of the above

✅ Correct Answer: 1

Which statement is not correct in reference to the following code? A = {1 : "One", 2 : "Two", 3 : "Three"} A[4] = "Four"

1. It will add value at the end of dictionary.
2. It will modify value if the key already exist.
3. It will add value in between of the dictionary.
4. All the above

✅ Correct Answer: 3

The following code is an example of _______ N = {A: {'name': 'Ravi', 'age': '5', 'sex': 'M'}, B: {'name': 'Golu', 'age': '2', 'sex': 'F'}}

1. Normal Dictionary
2. Nested Dictionary
3. Empty Dictionary
4. All the above

✅ Correct Answer: 2

pop( ) function delete and ____ the element of dictionary.

1. display
2. return
3. not return
4. add

✅ Correct Answer: 2

Which of the following is not method of dictionary?

1. len( )
2. pop( )
3. del ( )
4. update( )

✅ Correct Answer: 3

Write the output of the following code : A = {1 : "One", 2 : "Two", 3 : "Three"} print(A[2] + A[1])

1. Error
2. TwoOne
3. 21
4. {1 : “One”, 2 : “Two”, 3 : “Three”}

✅ Correct Answer: 2

_______ datatype fall under mapping

1. List
2. Tuple
3. Dictionary
4. String

✅ Correct Answer: 3

The key-value pair in dictionary is called ____

1. item
2. pair item
3. paired value
4. value

✅ Correct Answer: 1

Choose the correct statement Assertion (A) : Items in dictionaries are unordered. Reason (R) : We may not get back the data in the same order in which we had entered the data initially in the dictionary.

1. A is true but R is false
2. A is false but R is true
3. Both A and R are false
4. Both A and R are true and R is the correct explanation of A

✅ Correct Answer: 4

_______ is the suitable data type for keys of dictionary in python.

1. Number
2. String
3. Tuple
4. All the above

✅ Correct Answer: 4

Choose the correct statement : Statement A : Dictionaries are mutable. Statement B : Contents of the dictionary can not changed after it has been created

1. Statement A is True
2. Statement B is True
3. Both the statements are True
4. Statement A is True and Statement B is False

✅ Correct Answer: 4

Write the output of the following : A = {1 : "One", 2 : "Two", 3 : "Three"} print("One" in A)

1. True
2. False
3. Error
4. One

✅ Correct Answer: 2

_________ function returns the number of key: value pairs of the dictionary.

1. total( )
2. len( )
3. length( )
4. items( )

✅ Correct Answer: 2

Which of the following function create a dictionary from a sequence of key-value pairs

1. dictionary( )
2. dict( )
3. create( )
4. convert( )

✅ Correct Answer: 2

Following statement return values in the form of _______ >>> D1.keys() #D1 is a dictionary

1. tuple
2. list
3. string
4. dictionary

✅ Correct Answer: 2

Which of the following is feature of Dictionary?