Computer Science class 11

Which of the following is mutable in Python?

• Tuple

• String

• List

• Dictionary

What will tuple1 = (1, 2, 3); tuple1[1] = 4 result in?

• (1, 4, 3)

• (1, 2, 3, 4)

• Error

• None

What is the output of len("Python")?

• 5

• 6

• 7

• None

Which method is used to add a new key-value pair to a dictionary?

• add()

• append()

• insert()

• update()

Which of the following is a looping statement in Python?

• if-else

• for

• switch-case

• break

The keyword used to exit a loop prematurely is _________.

Which of the following is not a valid string operation?

• Concatenation (+)

• Repetition (*)

• Indexing ([])

• Subtraction (-)

Which statement about Python dictionaries is true?

• Keys must be mutable

• Values must be unique

• Keys must be unique

• Dictionaries maintain insertion order

What will print("Python"[::-1]) output?

• "Python"

• "nohtyP"

• Error

• None

The _________ loop is used when the number of iterations is known in advance