Question 1

Question 1Assertion (A): Dictionary is a collection of key-value pairs.Reasoning (R): Each key in a dictionary maps to a corresponding value. Keys are unique and act as the index.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationA dictionary is a collection of key-value pairs, where each key is unique and maps to a corresponding value. The keys act as the index, allowing to access and manipulate the values associated with them.

Question 2

Question 2Assertion (A): Dictionaries are enclosed within curly braces { }.Reasoning (R): The key-value pairs are separated by commas (,).Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true but R is not the correct explanation of A.ExplanationDictionaries in Python are enclosed within curly braces {}, where each key is separated from its corresponding value by a colon (:), and different key-value pairs are separated by commas.

Question 3

Question 3Assertion (A): The popitem() method can be used to delete elements from a dictionary.Reasoning (R): The popitem() method deletes the last inserted key-value pair and returns the value of deleted element.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationThe popitem() method in Python is used to delete elements from a dictionary. It returns and removes the last inserted key-value pair from the dictionary.

Question 4

Question 4Assertion (A): Keys of the dictionaries must be unique.Reasoning (R): The keys of a dictionary can be accessed using values.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

A is true but R is false.ExplanationThe keys of dictionaries in Python must be unique and immutable. Values in a dictionary can be accessed using their corresponding keys.

Question 5

Question 5Assertion (A): clear() method removes all elements from the dictionary.Reasoning (R): len() function cannot be used to find the length of a dictionary.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

A is true but R is false.ExplanationThe clear() method removes all items from the particular dictionary and returns an empty dictionary. The len() method returns the length of key-value pairs in the given dictionary.

Question 6

Question 6Assertion (A): Items in dictionaries are unordered.Reasoning (R): You may not get back the data in the same order in which you had entered the data initially in the dictionary.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationIn Python, items in dictionaries are unordered. Dictionaries do not maintain the order of elements as they are inserted. When retrieving data from a dictionary, the order of elements returned may not match the order in which they were inserted.

Question 7

Question 7Assertion (A): Consider the code given below:d={1: 'Amit', 2: 'Sumit', 5:'Kavita'}
d.pop(1) 
print(d) The output will be:Amit #item is returned after deletion
{2: 'Sumit', 5: 'Kavita'}
Reasoning (R): pop() method not only deletes the item from the dictionary but also returns the deleted value.Both A and R are true and R is the correct explanation of A.Both A and R are true but R is not the correct explanation of A.A is true but R is false.A is false but R is true.

Accepted Answer

Both A and R are true and R is the correct explanation of A.ExplanationIn the given code, when d.pop(1) is called, it removes the key 1 and returns the corresponding value 'Amit'. The subsequent print(d) statement displays the updated dictionary without the key-value pair (1, 'Amit'). The pop() method in Python dictionaries not only deletes the specified key-value pair from the dictionary but also returns the value associated with the deleted key.

Question 8

Question 1Like lists, Dictionaries are mutable which means they can be changed.

Accepted Answer