Python Dictionary MCQs

Question 1: Which of the following statements is true?

• Dictionary is a sequence of key-value pairs.
• Dictionary is an indexed collection of key-value pairs.
• Dictionary is an unordered collection of key-value pairs
• None of these

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Question 2: Which of following objects is not a valid declaration for dictionary?

• dict = {(1,2):10}
• dict={[1, 2]:10}
• dict={1:10}
• None of the above

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Question 3: To delete a key value pair in dictionary, use _______.

• del() method
• pop() method
• del keyword
• remove()

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Question 4: The items() method of dictionary returns ______.

• list of tuples
• tuple of lists
• tuple of tuples
• list of lists

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Question 5: What will be the output of the following code?

nums = {"ONE":1, "TWO":2}
print(nums["One"])

• 1
• “ONE”
• Syntax error
• Runtime Error

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Question 6: years={1995:'Java', 1972:'C', 1994:'Python'} is a dictionary with key-value pairs of the year of invention and name of a language. The expression list(years) will return ____________.

• list of years
• list of languages
• list of tuples each having year and language
• none of these

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Question 7: What will be the output of the following code?

years={1995:'Java', 1972:'C', 1994:'Python'}
print(years.get(2000))

• ValueError
• SyntaxError
• Blank output
• Java

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