JULY MONTHLY TEST CS XII

 

KENDRIYA VIDYALAYA WALTAIR

JULY MONTHLY TEST – 2022-23

CLASS XII                                                                                              SUBJECT: CS

MARKS 25                                                                                           TIME 90 MINS

Answer all the questions

1	Which of the following statements is not true for parameter passing to functions? (a) You can pass positional arguments in any order. (b) You can pass keyword arguments in any order. (c) You can call a function with positional and keyword arguments. (d) Positional arguments must be before keyword arguments in a function call.	1
2	Which of the following function calls can be used to invoke the below function definition? def test (a, b, c, d) (a) test(1, 2, 3, 4) (c) test(a = 1, b = 2, c = 3, 4) (b) test(a = 1, 2, 3, 4) (d) test(a = 1, b = 2)	1
3	Which of the following option is the correct Python statement to read and display the first 10 characters of a text file "Notes.txt"? (a) F = open('Notes.txt'); print (F.load(10))  (b)F = open('Notes.txt'); print (F.dump (10)) (c)F = open('Notes.txt'); print (F.read(10)) (d) F = open('Notes.txt'); print (F.write(10))	1
4	What is the output produced by following code, if the input given is :  “a” try: x = float(input("Your number:")) inverse = 1.0/x except ValueError: print ("You should have given either an int or a float") except ZeroDivisionError: print ("Infinity") finally: print ("There may or may not have been an exception.")	1
5	In the following question, a statement of assertion (A) is followed by a statement of reason (R ). Mark the correct choice as : (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is not the correct explanation of A. (c) A is true but R is false (or partly true). (d) A is false (or partly true) but R is true. (e) Both A and R are false or not fully true   Assertion. Exception handling code is clear and block based in Python. Reason. The code where unexpected runtime exception may occur is separate from the code where the action takes place when an exception occurs	1
6	Find and write the output of the following python code: def ChangeVal (M,N): for i in range (N): if M[i]%5 == 0: M[i]//= 5 if M[i]%3 == 0: M[i]//= 3 L=[ 25,8,75,12] ChangeVal (L,4) for i in L: print(i, end = '#')	2
7	Suppose the content of a text file Notes.txt is: "The way to get started is to quit talking and begin doing" What will be the output of the following Python code? F = open("Notes.txt") F.seek(29) S = F.read( ) print(S)	2
8	What possible outputs(s) are expected to be displayed on screen at the time of execution of the program from the following code? Also specify the minimum and maximum values that can be assigned to the variable End. import random Colours = ["VIOLET", "INDIGO", "BLUE", "GREEN","YELLOW", "ORANGE", "RED"] End = random.randint (2)+3 Begin = random.randint (End) +1 for i in range(Begin, End): print (Colours[i], end="&") (i) INDIGO&BLUE&GREEN&       (ii) VIOLET & INDIGO&BLUE& (iii) BLUE&GREEN&YELLOW&    (iv) GREEN&YELLOW&ORANGE &	2
9	Write a function exchange(L) which will excahnge the positions of maximum and minimum element of list L	2
10	A binary file “Book.dat” has structure [BookNo, Book_Name, Author, Price]. i. Write a user defined function CreateFile() to input data for a record and add to “Book.dat” . ii. Write a function CountRec(Author) in Python which accepts the Author name as parameter and count and return number of books by the given Author are stored in the binary file “Book.dat”	3
11	Write a function in python to count the number of lines in a text file ‘STORY.TXT’ which is starting with an alphabet ‘A’	3
12	Write a Python program to read a text file “sample.txt” and copy all the 4 letter words into another file “temp.txt”	3
13	i) Differentiate between seek() and tell() method with an example ii) explain the use of global keyword in functions with suitable example iii) what is an exception. Give the examples of any two exceptions with suitable contexts	3