Class 12 Computer Science Sample Paper Term 1 With Solutions Set C

Section A

1. Which is a way to convey a Python object into a character stream. 
(a) Pickling
(b) Unpickling
(c) dump() method
(d) load() method

2. Which character is used to create a new file in csv?
(a) r
(b) w
(c) r+
(d) x

3. Which path does not start with a leading forward slash?
(a) Relative
(b) Absolute
(c) Both (a) and (b)
(d) None of these

4. Which of the following operators in Python are used to determine whether a value is of a certain class or type?
(a) Identity operators
(b) Membership operators
(c) Comparison operators
(d) All of these

5. This function converts all uppercase letters in string to lowercase letters.
(a) upper()
(b) lower()
(c) isupper()
(d) islower()

6. List can be created to put the elements in
(a) []
(b) {}
(c) ()
(d) None of theseC

7. Which of the following are sequence of character data?
(a) Lists
(b) Tuples
(c) Strings
(d) Dictionaries

8. List, dictionary and sets are
(a) mutable
(b) immutable
(c) Both
(a) and (b)
(d) None of these

9. The process of converting a data type into another data type is known as ………… .
(a) expression
(b) operator
(c) type conversion
(d) comparison

10. In complex number a + ib, b represents as
(a) real part
(b) imaginary part
(c) special part
(d) None of these

11. To print all elements of tuple in reverse order using …………
(a) [: – 1]
(b) [: : – 1]
(c) [1 : : ]
(d) [: : 1]

12. Which function is used to convert string into tuple?
(a) string()
(b) tup()
(c) tuple()
(d) str_tuple()

13. Which statement is a sequence of more than one statements?
(a) Control statement
(b) Compound statement
(c) Single statement
(d) Sequence statement

14. Which of the following is a step-by-step process of solving a well defined computational problem?
(a) Algorithm
(b) Pseudocode
(c) Flowchart
(d) Decision table

15. ………… are drawn using certain special purpose symbols.
(a) Algorithm
(b) Pseudocode
(c) Flowchart
(d) Decision table

16. Which of the following function is a built-in function in Python?
(a) myFunc()
(b) test()
(c) def()
(d) print()

17. What will be the output of the following Python expression?
round(8.695)
(a) 8.6
(b) 9
(c) 8
(d) 8.7

18. What will be the output of the following Python code?
x = [‘AB’, ‘CD’]
for i in x:
i.lower()
print(x)
(a) [‘ab’, ‘cd’]
(b) [‘AB’, ‘CD’]
(c) [None, None]
(d) None of the mentioned

19. Suppose list1 is [2445,133,12454,123], what is max(list1)?
(a) 2445
(b) 133
(c) 12454
(d)123

20. What will be the output of the following Python code?
x = “abcdef”
i = “a”
while i in x:
print(‘i’, end = “ ”)
(a) No output
(b) i i i i i i …
(c) a a a a a a…
(d) a b c d e f

21. Which of the following operators has its associativity from right to left?
(a) +
(b) //
(c) %
(d) **

22. What will be the output of the following Python code?
>>> a=(l,2,(4,5))
>>> b=(l,2,(3,4))
>>> a<b
(a) False
(b) True
(c) Error, < operator is not valid for tuples.
(d) Error, < operator is valid for tuples but not if there are sub-tuples.

23. What will be the output of the following Python code snippet?
d1 = {“Neha”:86, “Yash”:92}
d2 = {“Neha”:86, “Yash”:88}
d1 > d2
(a) True
(b) False
(c) Error
(d) None

24. What will be the output of the following Python code? 
Dic1={}
Dic1[2]=85
Dic1[1]=[22,23,24]
print(Dic1[1][1])
(a) [22,23,24]
(b) 23
(c) 22
(d) Error

25. What will be the output of the following Python code?
dic1 = {0: ‘One’, 1: ‘Two’, 2: ‘Three’}
for x, y in dic1:
print(x, y)
(a) 0 1 2
(b) One Two Three
(c) 0 One 1 Two 2 Three
(d) Error

Section B

26. What is the output of the following code?
t1=(70, 56, ‘Hello’, 22, 2, ‘Hi’, ‘The’, ‘World’, 3)
print(t1 [2:4])
(a) (56, ‘Hello’)
(b) (‘Hello’, 22)
(c) (‘Hello’, 22,2)
(d) (56, ‘Hello’, 22)

27. Suppose the content of file ‘‘arihant.txt’’ is What will be the output of the following code?
myfile=open(“arihant.txt”,“r”)
s=myfile.read(10)
print(s)
s1=myfile.read(15)
print(s1)
myfile.close()
(a) Welcome to Welc
(b) Welcome to Arihant!
(c) Welcome to Arihant! Welc
(d) Welcome to Arihant

28. Identify the output of following code.
for i in range(4):
if i == 4:
break
else:
print(i)
else:
print(“Welcome”)

29. What will be the output of the following Python code snippet?
x = ‘abcd’
for i in range(len(x)):
print(x)
x = ‘a’
(a) a
(b) abcd abcd abcd abcd
(c) a a a a
(d) None of the mentioned

30. Identify the output of the following Python statement.
x=0
for i in range (1, 12, 3):
x+=i+3
print(x)
(a) 31
(b) 32
(c) 33
(d) 34

31. Identify the output of the following Python code.
def test(val):
val[1]=20
a=[2, 3, 4]
test(a)
print(a)
(a) [2, 20]
(b) [20, 3]
(c) [2, 3, 20, 4]
(d) [2, 20, 4]

32. Sohan is a student of Class 12th. He got an assignment on Python language, in which one question is Write a tuple test = (3, 4, 8, 11, 2) on a binary file hello.bin. Consider the following code written by him.
import pickle
test=(3, 4, 8, 11, 2)
file=open(“hello.bin”, “wb”)
pickle. —————————— # line 1
file.close()
Identify the missing code in line 1.
(a) dump (file, test)
(b) dump (test, file)
(c) write (test, file)
(d) load (file, test)

33. Suppose the content of file “vowel.txt” is What will be the output of following code?
def count():
vow=0
f=open(“vowel.text”, “r”)
N=f.read()
M=N.split()
for i in M:
if(i==“a” or i== “e” or i==“i” or i==“o” or i==“u”):
vow=vow+1
f.close()
(a) 60
(b) 58
(c) 59
(d) 54

34. Find the output of the following code.
def Func (a = 1, b = 2):
a = a + b
b + = 1
print (a, b)
Func (b = 4, a = 5)
(a) 9 5
(b) 4 5
(c) 4 9
(d) Error

35. Evaluate the following expression and identify the correct answer.
2*3//4 + 4//4 + 8 − 2 + 5//8
(a) 14
(b) 8
(c) 10
(d) 12

36. What will be the output of the following Python code?
def power(a, b=4):
r = 1
for i in range(b):
r = r * a
return r
print power(5)
print power(5, 5)
(a) 625
3125
(b) 625
625
(c) 3125
3125
(d) Error

37. What will be the output of the following Python code?
def printMax(a, b):
if a> b:
print(a, ‘is maximum’)
elif a == b:
print(a, ‘is equal to’, b)
else:
print(b, ‘is maximum’)
printMax(33,94)
(a) 33 is maximum
(b) 94
(c) 94 is maximum
(d) Error

38. What will be the output of following code?
import random
AR=[20,30,40,50,60,70]
Lower =random.randint(1,3)
Upper =random.randint(2,4)
for K in range(Lower, Upper +1):
print(AR[K],end=“#”)
(a) 10#40#70#
(b) 30#40#50#
(c) 50#60#70#
(d) 40#50#70#

39. What will be the output of the following Python code?
list1 = [11, 12, 13, 14, 15]
for i in range(1, 5):
list1[i−1] = list1[i]
for i in range(O, 5):
print(list1[i] ,end = “ ”)
(a) 15 15 1112 13
(b) 15 1112 13 14
(c) 12 13 14 15 11
(d) 12 13 14 15 15

40. What will be the output of the following Python code?
myFile = open(“story.txt”, “wb”)
print (“Name of the file:”, myFile.name)
myFile.flush()
myFile.close()
(a) Compilation error
(b) Runtime error
(c) No output
(d) Flushes the file when closing them

41. Find the output of the following code from given options.
def calcresult ():
i=9
while i > 1 :
if (i% 2 = = 0):
x = i% 2
i = i − 1
else:
i = i − 2
x = i
print (x * *2)

42. Suppose the content of file ‘‘para.txt’’ is What will be the output of the following code?
file = open(“para.txt”)
val = file.read()
print(len(val))
file.close()
(a) 44
(b) 39
(c) 45
(d) Error

43. What will be the output of following code?
def mean (* args):
total = 0.0
for v in args :
total + = v
return (total / len (args))
mean (* [1, 2, 3, 4])
(a) 2
(b) 3
(c) 2.5
(d) 3.5

44. A text file “Quotes.txt” has the following data written in it.
What will be the output of the following code?
def COUNT ( ):
s=open (“Quotes.txt”, “r”)
f=s.read( )
z=f.split( )
count=0
for i in z:
count=count+1
print (count)
(a) 14
(b) 15
(c) 16
(d) 29

45. What will be the output of the following Python code snippet?
a={}
a[1] = 1
a[‘1’] = 2
a[1]=a[1]+1
count = 0
for i in a:
count+= a[i]
print(count)
(a) 1
(b) 2
(c) 4
(d) Error, the keys cannot be a mixture of letters and numbers

46. What will be the output of the following Python code?
i=0
def change(i):
i=i+1
return i
change(1)
print(i)
(a) 1
(b) Nothing is displayed
(c) 0
(d) Error

47. What is the output of the code?
z = 100
def f():
global z
print(‘z is:’, z)
z=50
print(‘New value of global z is:’, z)
f()
print(‘Value of z is:’, z)
(a) z is : 100
New value of global z is: 100
Value of z is : 100
(b) z is : 100
New value of global z is: 100
Value of z is : 50
(c) z is : 100
New value of global z is: 50
Value of z is : 100
(d) z is : 100
New value of global z is: 50
Value of z is : 50

48. Suppose the content of text file ‘‘para.txt‘’ is What will be the data type of s?
file=open (“para.txt”, “r”)
s=file.read()
file.close()
(a) string
(b) list
(c) tuple
(d) sets

49. What will be the output of the following code?
dic1= {‘One’ :1, ‘Two’ : 2, ‘Three’:3}
s=(list(dic1.values())
print(s)
(a) [‘One’, ‘Two’, ‘Three’]
(b) [1, 2, 3]
(c) [3]
(d) [‘One’ : 1, ‘Two’ : 2, ‘Three’ : 3]

Section C

Case Study Based Questions

def makenew (mystr):
newstr = “ ”
count = 0
for i in ____ : # line 1
if count % 2 ! = 0 :
newstr = newstr + str (____) # line 2
else:
if ____ (i): # line 3
newstr = newstr + upper(i)
else:
newstr = newstr + ____ # line 4
count + = 1
newstr = ____ + mystr[: 1] # line 5
print (“The new string is:”, newstr)
____ (“sTUdeNT”) # line 6

50. Choose the correct option to fill up the blank in line 1 as marked.
(a) mystr
(b) newstr
(c) mystr +1
(d) mystr −1

51. Choose the correct option to fill up the blank in line 2 as marked.
(a) i
(b) count
(c) i + 1
(d) count +1

52. Choose the correct option to fill up the blank in line 3 as marked.
(a) lower
(b) upper
(c) islower
(d) isupper

53. Choose the correct option to fill up the blank in line 4 as marked.
(a) 1
(b) i * 2
(c) i/2
(d) i

54. Choose the correct option to fill up the blank in line 5 as marked.
(a) newstr
(b) count
(c) i
(d) str

55. Choose the correct option to fill up the blank in line 6 as marked.
(a) newstr
(b) str
(c) makenew
(d) mystr