OUR OWN HIGH SCHOOL, DUBAI
PERIODIC TEST-3, JANUARY-2022
Computer Science (083)
Set-1
Grade: 11 Max Marks: 25
Date: 11-01-2022 Time: 1 hour
Name of the Student: _______________________________________ Class & Sec: …….
General Instructions:
• Please read the instructions carefully.
• This question paper is divided into 02 sections, Section A (MCQ) and B (Subjective).
• Section A is of 10 marks.
• Section B is of 15 marks.
SECTION-A
Answer all the questions
1. What will be the output for the following Python statements? 1
L=[10,20,30,40,50]
L=L+5
print(L)
(a) [10,20,30,40,50,5]
(b) [15,25,35,45,55]
(c) [5,10,20,30,40,50]
(d) Error
2. Identify the output of the following Python statements: 1
L=[]
for i in range(4):
L.append(2*i+1)
print(L[::-1])
(a) [7, 5, 3, 1]
(b) [9, 7, 5, 3]
(c) [4, 3, 2, 1]
(d) [1, 2, 3, 4]
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3. Identify the output of the following Python Statements: 1
L1, L2=[10, 15, 20, 25],[]
for i in range(len(L1)):
L2.insert(i,L1.pop())
print(L1,L2, sep="&")
(a) []&[25, 20, 15, 10]
(b) [10, 15, 20, 25]&[25, 20, 15, 10]
(c) [10, 15, 20, 25]&[10, 15, 20, 25]
(d) [25, 20, 15, 10]&[]
4. What is the output of the following Python code? 1
def ListChange():
for i in range(len(L)):
if L[i]%2==0:
L[i]=L[i]*2
if L[i]%3==0:
L[i]=L[i]*3
else:
L[i]=L[i]*5
L=[2,6,9,10]
ListChange()
for i in L:
print(i, end="#")
(a) 4#12#27#20#
(b) 6#18#27#50#
(c) 20#36#27#100#
(d) Error
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5. Which of the following option can be the output for the following Python code? 1
L1=[10, 20, 30, 20, 10]
L2=[]
for i in L1:
if i not in L2:
L2.append(i)
print(L1, L2, sep="&")
(a) [10, 20, 30, 20, 10]&[10, 20, 30, 20, 10]
(b) [10, 20, 30, 20, 10] [10, 20, 30, 20, 10] &
(c) [10, 20, 30, 20, 10]&[30, 20, 10]
(d) [10, 20, 30, 20, 10]&[10, 20, 30]
6. What will be the output of the following Python code? 1
L=[10,20]
L1=[30,40]
L2=[50,60]
L.append(L1)
L.extend(L2)
print(L)
(a) [60, 50, 40, 30, 20, 10]
(b) [10, 20, 30, 40, 50, 60]
(c) [10, 20, 30, 40,[50, 60]]
(d) [10, 20, [30, 40], 50, 60]
7. Which of the following is a mutable type? 1
(a) string
(b) tuple
(c) int
(d) list
8. Which of the following statements are True? 1
i. [1,2,3,4]>[4,5,6]
ii. [1,2,3,4]<[1,5,2,3]
iii. [1,2,3,4]>[1,2,0,3]
iv. [1,2,3,4]<[1,2,3,2]
(a) i, ii,iv
(b) i, iii, iv
(c) Ii, iii
(d) Only iv
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9. What will be the output of the following code? 1
>>> l=[1,2,3,4]
>>> m=[5,6,7,8]
>>> n=m+l
>>> print(n)
(a) [1,2,3,4,5,6,7,8]
(b) [5, 6, 7, 8, 1, 2, 3, 4]
(c) [1,2,3,4][5,6,7,8]
(d) [5,6,7,8] [1,2,3,4]
10. If a list is created as: 1
>>>l=[1,2,3,'a',['apple','green'],5,6,7,['red','orange']] then what will be the output
of the following statement:
>>>l[8][0][2]
(a) 'd' (b) 'e'
(c) 'r' (d) 'o'
SECTION-B
Answer all the questions.
11. Distinguish between pop() and remove() function is List with help of suitable 2
examples.
12. Write a program to count the number of strings where the string length is 3 and 2
the first character is ‘U’.
Sample list: ['India', 'USA', 'Nepal', 'UAE', 'Iran']
Expected Result: 2
13. Write a program to input a list having n numbers and find the highest and 2
lowest value in the list without using built-in functions max() and min().
If list L=[10, -10, 20, -20, 15]
Highest value= 20
Lowest value= -20
14. Write the output of the following Python program code: 3
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str1=list("Pt-3")
for i in range(len(str1)):
if i==3:
x=int(i)
x+=x-3
str1[i]=x
elif (str1[i].islower()):
str1[i]=str1[i].upper()
else:
str1[i]=str1[i]*2
print(str1)
15. Write a program to input a list having n numbers. Display the list. Swap the first 3
half of list with second half. Display the modified list. (n is an even number)
Displaying the list: [11, 22, 33, 44, 55, 66]
Displaying the modified List: [44, 55, 66, 11, 22, 33]
16. Write a program to input a list having n numbers. Display the list. Add 10 to all odd 3
values and add 20 to all even values in the list L. Display the modified list.
Displaying the list: [1, 2, 3, 4, 5, 6]
The modified list: [11, 22, 13, 24, 15, 26]
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