Updated Class 12 CS 100+ Python One Mark Questions with Answers Important - CS-IP-Learning-Hub

Python One Mark Questions with Answers for Class 12

Python One Mark Questions with Answers for Class 12

According to CBSE Latest Sample Paper – 2024. There are 21 Questions in Section A including Assertion and Reasoning . Each Question is of One Mark. Student has to attempt all the questions. Division is as follows according to CBSE Sample Paper.

Python ——————- 13 Questions. (including 1 question of Assertion and Reasoning)
SQL ———————- 5 Questions. (including 1 question of Assertion and Reasoning)
Networking ————–3 Questions.

Further Analysis of Questions.

True/False (From Python)
Output based (from String in Python)
Boolean Expression
Output based (from String in Python)
Output based (from String in Python)
Output based (from Tuple in Python)
Exception Handling (from Dictionary in Python)
Question Regarding remove( ) function in List.
Error finding question (from Tuple in Python)
Missing Statement (from File Handling in Python)
True/False (from Exception Handling in Python)
Output based (from Function in Python)
SQL
SQL
SQL
SQL
Networking
Networking
Networking
Assertion & Reasoning (from Function in Python)
Assertion & Reasoning (from SQL)

This article will give exposure of all expected Questions of Python(1 mark only), in the same pattern as given in CBSE Sample Paper.

Python One Mark Questions with Answers for Class 12

Q1. Identify the valid identifier out of the following.

item*qty
$price
for
price

Ans. price

Q2. Write the output of the following

k = ['a', 'b', 'c', 'd', 'e']
print(k[-1 : -7 : -1])

Ans. ['e', 'd', 'c', 'b', 'a']

Q3. Write the full form of CSV.

Ans. CSV Stands for  Comma Separated Value

Q4. Write the membership Operator.

Ans. in and not in are two membership operator

Q5. Tuple is a mutable or immutable type(T/F)

Ans. Tuple is Immutable

Python One Mark Questions with Answers for Class 12

Q6. Name a function which is used to create empty dictionary.

Ans. dict( )

Q7. Write the output of the following:

L = list("Python Questions")
print(L)

Ans. ['P', 'y', 't', 'h', 'o', 'n', ' ', 'Q', 'u', 'e', 's', 't', 'i', 'o', 'n', 's']

Q8. What is abs( ) function in python?

Ans. abs( ) function returns the absolute value of given number. 
for example print(abs(-6)) will return 6

Q9. Fill in the blank in the following code:

import _________
print(_______.fabs(8))

Ans. math

Q10. Write the output of the following:

print(st[5 : 9] where st = “python questions”

Ans. n qu

Python One Mark Questions with Answers for Class 12

Q1. Find the invalid identifier from the following:

Myname
Yourname
True
pricein$

Ans. True and pricein$ are invalid identifier.

Q2. Write the output of the following :

A = [1,2,3,4,5,6,7,8,9]
print(A[3,9])

Ans. Error

Q3. _____________ module to be imported to work with CSV file.

Ans. CSV

Q4. Write a mathematical operator which returns the remainder.

Ans. %

Q5. The following declaration is of __________ (Tuple/Dictionary)

A = (“Amit”, “Sumit”, “Naman”)

Ans. Tuple

Python One Mark Questions with Answers for Class 12

Q6. Write the code to create a dictionary of three fruits:

Ans D = {1 : “Apple”, 2 : “Banana”, 3 : “Kiwi”}

Q7. Give example of two mutable data type.

Ans. List and Dictionary

Q8. What do you mean by len( ) function?

Ans. len( ) function returns the number of the elements in the object.

Q9. Write the output of the following:

D = {1 : 40, 2 : 50, 3 : 43}
print(D[1])

Ans. 40

Q10. Name a string function which returns the first alphabet of string in upper case and rest in small case.

Ans. capitalize( )

Q1. Identify the invalid identifier and specify the reason.

Name
Mytemp
Templerun
temp 123

Ans. temp 123 is invalid as spaces are not allowed in identifier.

Q2. Write the code to create an empty list named ‘temp’:

Ans. temp = [ ]

Q3. Write the type of file and the mode of opening file in the following code:

f = open(“data.txt”, “r+”)

Ans. Type of file is : Text File and Mode of opening is : reading and writing

Q4. Name the operator used in the following code and also write the output:

>>>7//3

Ans. Operator used is Integer division(//) and output is 2

Q5. Write the output of the following:

t = (1, 2, 3, "r")
print(t[2] + t[-3])

Ans. 5

Python One Mark Questions with Answers for Class 12

Q6. Write the output of the following:

L = list("String")
print(L[-5:-1])

Ans. [‘t’, ‘r’, ‘i’, ‘n’]

Q7. Define get( ) function in reference to dictionary.

Ans. get( ) function simply returns the value for a given key. If the key is not available then it returns the None.

Q8. Which function returns this output of the given input string

Input String : python questions 
Output String : Python Questions

Ans. title( )

Q9. Write the output of the following :

L = {1 : 34, 3 : 45, 5 : 29}
s=0
for i in L:
    s=s+i
print(s)

Ans. 9

Q10. What type of error is returned by the following code

s = "python practice"
s[5] = 'd

Ans. TypeError

Q1. Which of the following can be used as identifiers in python?

4thnum
Total
for
data

Ans. Total and data are valid identifiers.

Q2. Write the output of the following :

L = ["20","30","40","50","60"]
if "20" in L:
  print(not(True))

Ans. False

Q3. Write the code to open binary file “data.dat” in append mode using ‘fobj’ as file handle

Ans. fobj = open(“data.dat” , “ab”))

Q4. Write the output of the following code and also write the name of operator used.

print(34//4)

Ans. Output – 8, Operators used : Integer Division(//)

Q5. Write the output of the following :

L = ["20","30","40","50","60"]
s=0
c=3
for i in [1,2,3,5,4]:
   t=L[c]
   s=int(t) + i
   print(s)
   c=c-1

Ans. Output is

51
42
33
25
64

Python One Mark Questions with Answers for Class 12

Q6. What do you mean by Traversing of String?

Ans. Accessing each element of string is called traversing of string.

Q7. Write the output of the following:

s = "python questions"
for i in range(0,10,4):
      print(s[i+1])

Ans. 
y
n
e

Q8. Which function will return the largest value from a list of 10 numbers?

Ans. max( ) function

Q9. Is Tuple mutable or immutable?

Ans. Immutable

Q10. Which function of string return True if the string contains only alphabets?

Ans. isalpha( )

Q1. Find the invalid identifier from the following.

a. Mynum2

b. My2place

c. _myname

d. My name

Ans. d. My name

Q2. Write the output of the following code.

p = (1,2)
b = (0,9)
print(p+b)

Ans. (1, 2, 0, 9)

Q3. Fill the blanks in the following code :

import ________
with open("Text.csv", 'r') as ________
L = csv.reader(fin)
for line in ___:
       print(___________)

Ans. csv, fin, L, line

Q4. Write the name of the following operator

Ans. 
1. Floor Division
2. Modulus

Q5. Which is mutable out of List and String?

Ans. List

Python One Mark Questions with Answers for Class 12

Q6. Write the output of the following:

print((1,2,3,4,5).index(4))

Ans. 3

Q7. Find error in the following code :

a = 7
while (a =>9)
    print(a)


a = 7
while (a >= 9):
    print(a)

Q8. Write the output of the following:

print(“Python One Mark Questions with Answers“.upper( ))

Ans. PYTHON ONE MARK QUESTIONS WITH ANSWERS

Q9. What will be return by following code :

def sum(q, e, r):
       print(q)

Ans. None

Q10. Write the statement to open “data.txt” file in append mode.

Ans. f = open(“data.txt”, “a”)

Python One Mark Questions with Answers for Class 12

Q1. Which of the following are invalid identifiers?

my_num_1
1st_name
_
yield

Q2. Write the output of the following.

z = "Python One Mark Questions with Answers"
m = "Q"
while m in z:
      print(m)

Ans. Infinite loop (print ‘Q’ infinite times)

Q3. Write the output of the following.

print(2 + 0 == 2)

Ans. True

Q4. Write the output of the following:

L = ['11','22','33','44','55']
D = L
D[3]='SONU'
print(D)

Ans. [’11’, ’22’, ’33’, ‘SONU’, ’55’]

Q5. Akhil wants to generate random integers between 2 and 9 (including both). He write the following code but missed the arguments in function, so please help him to write the correct code.

import random
print(random.randint())

Ans.
import random
print(random.randint(2,9))

Python One Mark Questions with Answers for Class 12

Q6. Write the output of the following:

D = [11,22,33]
D.extend(44,55)
print(D)

Ans. Error

Q7. A tuple is declared as List = (1,2,3,4,5). What will be the value of print(List[: : -1])?

Ans. (5, 4, 3, 2, 1)

Q8. Which module to be import to use the “sqrt( )” function?

Ans. Math module

Q9. Fill in the blank to find the maximum value from the list

List = [1,2,3,4,5]
print( _____ (List))

Ans. max

Q10. Write the output of the following:

a = "CS"
b = "IP"
print(a+b, "a+b" ,[a+b])

Ans. CSIP a+b [‘CSIP’]

Python One Mark Questions with Answers for Class 12

Q1. Which of the following is not a valid identifier name in Python?

a) 5NUM b) _Radius_ c) PICKLE d)While

Ans. Invalid identifier is a) 5NUM

Q2. What is the output when following code is executed?

>>>str1=”Python One Mark Questions with Answers”
>>>str1[11 : 15 : ]

Ans. ‘Mark’

Q3. In which mode the following file opens?

f = open(“Data.txt”)

Ans. Read mode

Q4. Which of the following is a invalid relational operator in Python?

a) >= b) < c) >> d) ==

Ans. c) >>

Q5. What type of error is returned by the following statements?

L = (23, 45, 34, 21, 1 )

L[1] = 25

Ans. TypeError

Python One Mark Questions with Answers for Class 12

Q6. Write a statement to declare a blank dictionary named “Dict” by using inbuilt function.

Ans. Dict = dict( )

Q7. Fill in the blank

print(___________(1, 2, 3, 4, 5)) so that output is 5

Ans. max

Q8. Write the output of the following :

list1 = [2 * x for x in range(1,4)]

print(list1)

Ans. [2, 4, 6 ]

Q9. Identify the valid declaration of T:
L = [“J‟, “912‟, “EAR‟, 3]

a) dictionary b) string c) tuple d) list

Ans. List

Q10. Expand LIFO

Ans. Last In First Out

Python One Mark Questions with Answers for Class 12

Q1. Which of the following is a valid identifier name in Python?

a) for b) If c) while d) None of the above

Ans. b) If

Q2. What is the output of the following code

>>>B=”python one mark questions with answers”

>>>B[5:15:2]

Ans. ‘noemr’

Q3. Name any two file access modes in python.

Q4. What is the length of the tuple shown below?

>>>t=((((‘a’,9),’b’,’z’),’c’,2),’d’,0)

>>>t[0]

Ans. (((‘a’, 9), ‘b’, ‘z’), ‘c’, 2)

Q5. Which of the following is a valid Mathematical Operator in Python?
a) ? b) < c) =< d) //

Ans. d) //

Python One Mark Questions with Answers for Class 12

Q6. Identify the valid declaration of ‘C’:
C =(‘I’ , ”Janyary” , 89)
(i)List (ii)Tuple (iii)String (iv)Dictionary

Ans. Tuple

Q7. Name the built-in mathematical function / method that is used to return square root of a
number.

Ans. sqrt( )

Q8. Identify the data type of ‘T’

T = list(tuple( (‘S’, ‘U’, ‘M’ , ‘A’ , ‘N’) ) )

Ans. List

Q9. Write the output of the following python code:

Q = “PHYTHON MARK”

print(Q.isupper( ))

Ans. False

Q10. Which operator is used in the python to import all modules from packages?
(a) . operator (b) * operator (c) -> symbol (d) = operator

Ans. (b)

Python One Mark Questions with Answers for Class 12

Q1. Which of the following is a invalid identifier name in Python? And justify your answer.

a) 23Kg b) 23@Kg c) Kg23 d) Kg_23

Q2. Declare a dictionary with keys 10, 20, 30 and Values ‘A’, ‘B’ and ‘C’ respectively.

Ans. D = { 10 : ‘A’ , 20 : ‘B’ , 30 : ‘C’}

Q3. Name two file modes in which new file created (while opening) if the file does not exist.

Q4. Write the output of the following :

>>> A = “Class XII”

>>> A[-3 : ]

Ans. ‘XII’

Q5. Name the Python Library modules which need to be imported to invoke the load( ) function.

Ans. pickle

Python One Mark Questions with Answers for Class 12

Q6. Write the output of the following :

>>> A = (“10” , “A” , 20 , “B” , 30)

>>> B = A[2 : 4]

>>>type(B)

Ans. <class ‘tuple’>

Q7. Explain floor( ) function with the help of example.

Ans. floor( ) function convert the fraction to the nearest lower whole number. E.g. floor(2.2)= 2 and floor(2.7) = 2

Q8. What will be the output of the following Python code?

>>>A = (11, 22, 33)

>>>2 * A

Ans. ( 11, 22, 33, 11, 22, 33 )

Q9. Name the Python Library modules which need to be imported to invoke the pow( ) function :

Ans. math module

Q10. Identify the valid arithmetic operator in Python from the following.
a) ? b) < c) ** d) and

Ans. c) **

Python One Mark Questions with Answers for Class 12

Q1. Write any two keywords of python.

Ans. True, False

Q2. Write the output of the following.

>>> 123 // 5

Ans. 24

Q3. Name the Python Library modules which need to be imported to invoke the uniform( ) function :

Ans. random module

Q4. A tuple is declared as T = ((100,35), (10,20,40), (50,30), (1, 2, 3, 4))
What will be the value of max(T) ?

Ans. (100,35)

Q5. Evaluate the following expressions:

a) 5<10 or 12<7 and not 3>18

Ans. True

Python One Mark Questions with Answers for Class 12

Q6. How can you access a global variable inside the function, if function has a variable with same name.

Ans. By using keyword ‘global’ before the variable name.

Q7. What do you mean by actual or formal parameters ?

Ans. The variables used in a function call is called actual parameter(s) whereas the list of variables used in the function definition is called formal parameter(s).

Q8. Write a statement to open a file “data.txt” in append mode.

Ans. f = open(“data.txt” , “a”)

Q9. What is random( ) function?

Q10. Expand LIFO.

Ans. Last In First Out

MCQ of Computer Science Chapter Wise

1. Functions in Python

2. Flow of Control (Loop and Conditional statement)

3. 140+ MCQ on Introduction to Python

4. 120 MCQ on String in Python

5. 100+ MCQ on List in Python

6. 50+ MCQ on Tuple in Python

7. 100+ MCQ on Flow of Control in Python

8. 60+ MCQ on Dictionary in Python

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Disclaimer : I tried to give you the correct “Python One Mark Questions with Answers ” , but if you feel that there is/are mistakes in the “Python One Mark Questions with Answers ” given above, you can directly contact me at csiplearninghub@gmail.com. All Questions given in above article “Python One Mark Questions with Answers” are important from Exam. Reference taken from NCERT book and KV Papers.