CBSE Class 12 Computer Science Flow of control conditional statements MCQs

Question. Which one of the following is a valid Python if statement :
a. if a>=2 :
b. if (a >= 2)
c. if (a => 22)
d. if a >= 22

Answer : A

Question. What will be the output of the following Python code?
list1 = [3 , 2 , 5 , 6 , 0 , 7, 9]
sum = 0
sum1 = 0
for elem in list1:
if (elem % 2 == 0):
sum = sum + elem
continue
if (elem % 3 == 0):
sum1 = sum1 + elem
print(sum , end=” “)
print(sum1)
a. 8 9
b. 8 3
c. 2 3
d. 8 12

Answer : D

Question. Predict the output of the following code:
X=3
If x>2 or x<5 and x==6:
Print(“ok”)
else:
print(“no output”)
a . ok
b. okok
c. no output
d. none of above

Answer : C

Question. What will be the output of given Python code?
str1=”hello”
c=0
for x in str1:
if(x!=”l”):
c=c+1
else:
pass
print(c.
a. 2
b. 0
c. 4
d. 3

Answer : D

Question. The ……………… statement forms the selection construct in Python.
a. If else if
b. if
c. For ;
d. for

Answer : B

Question. The ………….statement terminates the execution of the whole loop.
a. continue
b. exit
c. breake
d. break

Answer : D

Question. The order of statement execution in the form of top to bottom is known as construct.
a. alternate
b. sequence
c. flow of data
d. flow chart

Answer : B

Question. Name is rohit and age between 18 and 35
a. name==rohit and age >=18 and age<=35
b. name==rohit and age >=18 or age<=35
c. name==rohit or age >=18 and age<=35
d. none

Answer : C

Question. Does python have switch case statement?
a. True
b. False
c. Python has switch statement but we can not use it.
d. None of the above

Answer : B

Question. if the condition is …………. , the statements of if block will be executed otherwise the statements in the ……….. block will be executed
a. false, true
b. true, else
c. both options are true
d. Can’t say

Answer : B

Question. Mala wants to make a fun program , if user enters any number a Good or funny message will appear . She is confused that which is the most suitable control to be used to make such program. Help her to choose correct option.
a. If
b. if else
c. if elif
d. Nested if else

Answer : B

Question. What does the following code print to console.
if True:
print(1001)
else:
print(2002)
a. 1001
b. true
c. 2002
d. false

Answer : A

Question. Predict the output of the following code:
x,y=2,4
if(x+y= =10):
print(“true”)
else:
print(“false”)
a. true
b .false
c. no output
d. none

Answer : B

Question. What does the following Python program display ?
x = 3
if x == 0:
print (“Am I here?”, end = ‘ ‘)
elif x == 3:
print(“Or here?”, end = ‘ ‘)
else :
pass
print (“Or over here?”)
a. Am I here?
b. Or here?
c. Am I here? Or here?
d. Or here ?
Or over here?

Answer : D

Question. An ……………… statement has less number of conditional checks than two successive ifs.
a. If else if
b. if elif
c. if-else
d. none

Answer : C

Question. The break and continue statements, together are called …………….statement.
a. Jump
b. goto
c. compound
d. none

Answer : B

Question. Donation in the range of4000-5000 or guest=1
a. (donation>=4000 and donation<=5000) or guest==1
b. donation>=4000 or donation<=5000 or guest==1
c. donation>=4000 and (donation<=5000 or guest==1)
d. donation>=4000 and donation<=5000) or guest==1

Answer : A

Question. Which statement will check if a is equal to b?
a. if a == b:
b. if a = b:
c. if a === c:
d. if a == b

Answer : A

Question. What will be the output of the following program if we input 8
Ch= int (“Enter Day of week (1 to 7 “))
If ch==1:
print (“Monday”)
elif ch==2:
print (“Tuesday”)
elif ch==3:
print (“Wednesday”)
elif ch==4:
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print (“Thursday”)
elif ch==5:
print (“Friday”)
elif ch==6:
print (“Saturday”)
else:
print (“Sunday”)
a. Sunday
b. Monday
c. All days will be printed
d. No Output

Answer : D

Question. What will be the output of the following Python code?
If 4+5==10:
print(“TRUE”)
else:
print(“false”)
print (“True”)
a. False
True
b. True
True
c. false
d. none

Answer : B

Question. Consider the following code segment:
a = int(input(“Enter an integer: “))
b = int(input(“Enter an integer: “))
if a <= 0:
b = b +1
else:
a = a + 1
if a > 0 and b > 0:
print (“W”)
elif a > 0:
print(“X”)
if b > 0:
print(“Y”)
else:
print(“Z”)
What letters will be printed if the user enters -1 for a and -1 for b?
a. Only W
b. Only X
c. Only Y
d. Only Z

Answer : D

Question. if( a. :
print(“a is non zero”)
else:
print(“its results is True”)
a. false
b. True
c. Its result is True
d. a is nonzero

Answer : D

Question. The ……….. operator tests if a given value is contained in a sequence or not.
a. In:
b. in
c. not in
d. none

Answer : B

Question. A graphical representation of an algorithm to solve a problem is called ……………
a. flow of data
b. barchart
c. flow chart
d. none

Answer : C

Question. State which of the following statement are true .
1.If,elif ,else are not compound statement.
2.Else if can be used in python.
3.Indentation while working with blocks is not necessary in python.
4.A pass statement is a null operation;it does nothing.
a.1
b. 2 ,3
c. 3
d. 4

Answer : D

Question. Checking multiple conditions in python requires……….. statement
a. if
b. if……. elif
c. switch
d. None of these

Answer : B

Question. What will be output after execution of the following code?
a=11
b=5
if (a%b==0):
print ( “Greater”)
if (a//b==0):
print ( “Example”)
else
print (“Sooo Sorry”)
a. Sooo Sorry
b. Great
c. Example
d. Great Example

Answer : B

Question. What keyword would you use to add an alternative condition to an if statement?
a. else if
b. elseif
c. elif
d. None of the above

Answer : C

Question. If the user inputs : 2<ENTER>, what does the following code snippet print?
x = float(input())
if(x==1):
print(“Yes”)
elif (x >= 2):
print(“Maybe”)
else:
print (“No”)
a.Yes
b. No
c. Maybe
d. Nothing is printed

Answer : C

Question. The……….. clause can occur with an if as well as with loops.
a. else
b. break
c. continue
d. none

Answer : A

Question. The two membership operators are ……….and …………
a. in, not in
b. true , false
c. =,==
d. none

Answer : A

Question. In a Python program, a control structure:
a. Defines program-specific data structures
b. Directs the order of execution of the statements in the program
c. Dictates what happens before the program starts and after it terminates
d. None of the above

Answer : B

Question. What will be output after execution of the following code?
a=11
B=5
If(a//b==2):
Print (“Yes”)
else :
Print(“No”)
a. 2.5
b. Yes
c. No
d. 21

Answer : B

Question. Which of following is not a decision-making statement.
a. if-elif statement
b. for statement
c. if -else statement
d. if statement

Answer : B

Question. Which one of the following if statements will not execute successfully?
if (1, 2) ;
print(‘foo’)
if (1, 2) :
print(‘foo’)
if (1) :
print( ‘foo’ )
if (1) ;
print( ‘foo’ )
a. 1 ,4
b. 2
c. 2,4
d. 4

Answer : B

Question. What is the logical expression for the following
Either A is greater than B or A is less than C
a. A>B or A<C
b. A>B and A<C
c . A>Band C
d. A>B or C

Answer : A

Question. What will be output of this expression:
‘p’ + ‘q’ if ’12’.isdigit() else ‘r’ + ‘s’
a. pq
b. rs
c. pqrs
d. pq12

Answer : B

Question. What will be the output of the following Python code?
str1=”learn python”
str2=””
str3=””
for x in str1:
if(x==”r” or x==”n” or x==”p”):
str2+=x
pass
if(x==”r” or x==”e” or x==”a”):
str3+=x
print(str2,end=” “)
print(str3)
a. rnpn ea
b. rnpn ear
c. rnp ea
d. rnp ear

Answer : B

Question. In Python, …………………. defines a block of statements.
a. Block
b. loop
c. indentation
d. {}

Answer : C

Question. An empty /null statement in Python is …………….
a. pass
b. none
c. null
d. none

Answer : A