CS Sample paper class 11
Subject – Computer Science, Class XI
MM : 70 Marks Time: 3 Hours
| 1. | a | Write at least two points of differences between compiler and interpreter. | 2 |
| b | Fill the appropriate answer: | 1 | |
| b | Write short note on ASCII. | 1 | |
| d | 1. Convert decimal number (0.375) to its equivalent binary number. 2. Add 10001 to 11101 | 2 | |
| e | Verify the following using truth table: X+Y.Z=(X+Y).(X+Z) | 2 | |
| f | Write the equivalent Boolean expression for the following logic circuit | 2 | |
| 2 | a | write the output of the following: a,b=20,30 a = a+5 b=b+10 a,b= b,a print (a) print (b) | 2 |
| b | print (“WELCOME\n”,”TO\n”,”PYTHON” ) | 1 | |
| c | Which of the following are invalid identifiers. a) 99flag b) As$swer c) For d) While | 1 | |
| d | a=3 b=6 b+=a print (b) | 1 | |
| e. | Write the output of the following: L=[10,20,30,40] L1=[500,600] L2=[35,45] L1.extend(L2) L.insert(25,2) print (L1+L2) print (L1) print (L.index(30)) print (L2*2) | 3 | |
| f. | Find the output of the following. T1=(10,20,30,40,50) T2=(100,200,300) T1,T2=T2,T1 1) min(T1) 2) max(T2) | 2 | |
| 3 | a | Write the python statement and the output for the following: 1) Find the second occurrence of ‘m’ in ‘madam’. 2) To replace ‘o’ with ‘*’ in word ‘hello’. 3) To remove ‘h’ from word ‘hectic’. 4) To break the string ‘Revolution’ into 3 parts taking ‘l’ as separator. 5) Change the case of each letter in string ‘ScHoOl’. 6) Whether ‘S’ exists in string ‘Schedule’ or not. | 6 |
| b | Write a program to calculate Simple Interest | 2 | |
| c | Write a program to check the given number is even number or odd number | 2 | |
| d | Write a program to search an element in the given List | 3 | |
| e | Write a program to sort elements of a given List | 2 | |
| 4. | a. | Write the output list =[‘I’,’N’,’D’,’I’,’A’] print(list[0:3]) print(list[3:]) | 2 |
| b. | Name any two module and two respective methods of each | 2 | |
| c. | Find the output:- (1,4) +(5,8)X=(1,4,6) Y=sum(x)/len(x) Print(Y) | 2 | |
| d. | Find the output:- dict= {‘Subject’: 2000, ‘Class’: 11, ‘Age’ : 21} print(dict.keys()) dict.pop(‘Class’) ptint(dict) dict[‘School’] = ‘KV’ print(dict) del dict[‘Age’] print(dict) | 4 | |
| 5. | a. | Write different ways of writing comments in a program? Give Example also. | 2 |
| b. | Write the difference between break and continue statements. | 2 | |
| c. | Write the naming Conventions of identifier | 2 | |
| c. | Write a program to find and display prime numbers below 50. | 2 | |
| d. | Write a program to Input a string and check whether it is palindrome or not? | 2 | |
| e. | WAP to remove duplicate items from a list and display. | 2 | |
| f. | Write a program to input ‘n’ name and phone numbers to store it in a dictionary and to input any name and to print the phone number of that particular name. | 3 | |
| 6. | a. | What is an IP address? | 1 |
| b. | What are the merits of social networking? | 2 | |
| c. | What is Cyber Trolling? Write down Medium/Ways of Trolling. | 2 | |
| d. | What do you mean by e-waste ? | 1 | |
| f. | What do you mean by hacker? | 1 | |
| g. | What are the issues on Gender and disability while teaching and using computer | 2 | |
| h. | When did introduced IT Act 2000 in India | 1 |
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