CBSE Class 12 Computer Science For Loop in Python MCQs

Question. The for loop in Python is an _____________
a) Entry Controlled Loop
b) Exit Controlled Loop
c) Both of the above
d) None of the above

Answer : A

Question. Which of the following loop is not supported by the python programming language?
a) for loop
b) while loop
c) do…while loop
d) None of the above

Answer : C

Question. Which of the following is True regarding loops in Python?
a) Loops should be ended with keyword “end”.
b) No loop can be used to iterate through the elements of strings.
c) continue is used to continue with the remaining statements inside the loop.
d) break can be used to bring control out of the current loop.

Answer : D

Question. I wants to continuously check for a correct answer each time user enters a value, what loop would I use?
a) for loop
b) while loop

Answer : B

Question. Why is iteration important?
a) It determines the order in which instructions are carried out
b) It allows multiple paths through a program
c) It allows code to be simplified by removing repeated steps
d) It ensures the code works correctly

Answer : C

Question. Write the output of the following Python code:
for i in range(2,7,2):
print(i * ‘$’)
a) 2$
4$
6$
b) $$
$$$$
$$$$$$
c) 2$4$6$
d) None of the above

Answer : B

Question. Find the output of the following program segments:
country = ‘INDIA’
for i in country:
print (i, end=”)
a) INDIAN
b) INDIA
c) INDI
d) INDIAS

Answer : B

Question. How many times the message Hello will appear when this loop runs?
while(0):
print(‘Hello’)
a) Not at all
b) Only once
c) Two times
d) Infinite times

Answer : A

Question. Which of the following is not true for the for statement in Python?
a) The statements within the body of for loop are executed till the range of values is exhausted
b) for loop iterates over the range or sequence.
c) for loop cannot be nested.
d) break statement is used to terminate a for loop without completing its iteration.

Answer : C

Question. range(3) in Python is equivalent to:
a) range(0,3,1)
b) range(1,4,1)
c) range(1,3)
d) range(1,3,0)

Answer : A

Question. What is the result of executing the following code?
count = 10
while count <= 10:
if count < 10:
count = count + 1
print(count)
a) The program will loop indefinitely
b) The value of number will be printed exactly 1 time
c) The while loop will never get executed
d) The value of number will be printed exactly 5 times

Answer : A

Question. A loop block in python starts with a –
a) ; (semicolon)
b) , (comma)
c) : (colon)
d) # (hash)

Answer : C

Question. Which of the following is False regarding loops in Python?
a) Loops are used to perform certain tasks repeatedly.
b) while loop is used when multiple statements are to executed repeatedly until the given condition becomes true.
c) while loop is used when multiple statements are to executed repeatedly until the given condition becomes false.
d) for loop can be used to iterate through the elements of lists.

Answer : C

Question. What is another word for ‘iteration’ ?
a) Selection
b) Assignment
c) Sequencing
d) Repetition

Answer : D

Question. To access a list which contains ten elements, which of the following uses of range() would produce a list of the desired indexes?
a) range(1,10)
b) range(0,9)
c) range(10)
d) range(1,11)

Answer : C

Question. Find and write the output of the following python code:
x = “abcdef”
i = “a”
while i in x:
print(i, end = ” “)
a) a
b) a a a a a a
c) a a a a a a … infinite times
d) Code will generate error

Answer : C

Question. Find the output of the following program segments:
i = 0
sum = 0
while i < 9:
if i % 4 == 0:
sum = sum + i
i = i + 2
print (sum)
a) Infinite Loop
b) 12
c) 14
d) 10

Answer : B

Question. Does Python support Exit – Controlled Loop?
a) Yes
b) No

Answer : B

Question. What will be the output of the given program segment?
for I in range(10, 1, 1):
print(I)
print(I)
a) 10
b) 9
c) Error
d) None of the above

Answer : B

Question. Which of the following is not a valid keyword of Python associated with loops?
a) continue
b) check
c) range
d) break

Answer : B

Question. When does the else statement written after loop executes?
a) When loop condition becomes false
b) When break statement is executed in the loop
c) else statement is always executed
d) None of the above

Answer : A

Question. Which term describes a loop that continues repeating without a terminating (ending) condition?
a) Infinite Loop
b) Conditional Loop
c) Unlimited Loop
d) Sequence Loop

Answer : A

Question. A count controlled loop will :
a) Repeat code until a condition is met
b) Repeat code a specific amount of times
c) Repeat code a random amount of times
d) None of the above

Answer : B

Question. Find the output of the following program segments:
a = 110
while a > 100:
print(a, end=’#’)
a –= 2
a) 110#108#106#104#102#100#
b) 110#108#106#104#102#
c) 110#108#106#104#102#
d) None of the above

Answer : B

Question. Which of the following is consider as an infinite loop?
a) while(infinte):
b) while(1):
c) while(not 1):
d) while(!1)

Answer : B

Question. Which of the following call to range() in Python will not yield anything?
a) range(-5, -1)
b) range(-1, -5, -1)
c) range(-5)
d) All of the above

Answer : C

Question. Which is not correct for the repetition constructs in Python?
a) For a for loop, an equivalent while loop can always be written.
b) For a while loop, an equivalent for loop can be written.
c) continue cannot be used with for loops.
d) else can be used with for and while both.

Answer : C

Question. Select which is true for, for loop
a) Python’s for loop used to iterates over the items of list, tuple, dictionary, set, or string
b) else clause of for loop is executed when the loop terminates naturally
c) else clause of for loop is executed when the loop terminates abruptly
d) We use for loop when we want to perform a task indefinitely until a particular condition is met

Answer : A

Question. X wants to allow the program to repeatedly ask the user to enter their Choice if it does not equal the Answer. Which loop option should X use?
a) while Choice == Answer:
Choice = input()
b) while Choice != Answer:
Choice = input()
c) while Answer != Choice:
Choice = input()
d) while Answer =! Choice:
Choice = input()

Answer : B

Question. How would you create a loop to iterate over the contents of the list given as?
monthDays = [31,28,31,30,31,30,31,31,30,31,30,31]
and print out each element?
a) for days in range(monthDays):
print(days)
b) for days in monthDays:
print(days)
c) for days in range(len(monthDays)):
print(days)
d) for days in monthDays[0]:
print(days)

Answer : B

Question. How many times will this loop run?
while(1):
print(2)
a) 1 time
b) 2 times
c) 3 times
d) None of the above

Answer : D

Question. What will be the final value of I after execution of the loop:
for I in range(10):
print(I)
a) 10
b) 9
c) None
d) Error

Answer : B

Question. break in Python is used ______________
a) To restart a loop
b) Terminate a loop
c) To jump in between the loop
d) None of the above

Answer : B

Question. ________ in Python is a counter-controlled loop.
a) for
b) while
c) Both (a) and (b)
d) None of the above

Answer : A

Question. Code repeated / looped until a condition has been met or a set number of times.
a) Sequence
b) Iteration
c) Selection
d) Variable

Answer : B

Question. Find the output of the following program segments:
for i in range(20,30,2):
print(i)
a) 20 22 24 26 28
b) 20
22
24
26
28
c) 20 22 24 26 28 30
d) 20
22
24
26
28
30

Answer : B

Question. Iteration stands for ___________
a) The order in which instructions are carried out
b) A decision point in a program
c) The repetition of steps within a program
d) Testing a program to make sure it works

Answer : C

Question. How many times will this loop run?
while(1==2):
pass
a) 0
b) 1
c) 3
d) Infinite

Answer : D

Question. Which of the following is not a valid jump statement in Python?
a) break
b) goto
c) call
d) continue

Answer : C