Tuples and Dictionaries — Important Questions
CBSE · Class 11 · Computer Science
42 important questions from Tuples and Dictionaries for CBSE Class 11 Computer Science, with answers. Part of the CBSE Class 11 Computer Science syllabus.
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Important Questions from Tuples and Dictionaries
Which of the following are characteristics of tuples? (Select all correct answers)
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Tuples are immutable, Tuples are ordered, Tuples can store different data types, Tuples allow duplicate elements
Tuples are immutable (cannot be changed), ordered (maintain sequence), can store mixed data types, and allow duplicates. They use parentheses, not square brackets.
In a dictionary, which of the following can be used as keys? (Select all correct answers)
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Strings, Numbers, Tuples
Dictionary keys must be immutable. Strings, numbers, and tuples are immutable and can be keys. Lists are mutable, so they cannot be used as keys.
What will happen if you try to access a key that doesn't exist in a dictionary?
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Raises KeyError
Accessing a non-existent key directly raises a KeyError. To avoid this, use the get() method which returns None for missing keys.
What does the len() function return for a dictionary?
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Number of key-value pairs
len() returns the number of key-value pairs (items) in a dictionary. Each key-value pair counts as one item.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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