Page 192 - Computer Science V2.0 Class 11

Ans. False
False
False
4. Priya has written the following code in Python to print her name. But there is an error in her program. Why do you think
the program is not correct?
myName = 'Preya'
myName[2] = 'i'
print(myName)
Ans. As the string is an immutable data type, the second statement will result in an error.
5. Sushant has written a program in Python to understand different types of operators. What output should he expect on its
execution?
message = 'Be Simple'
value = 25
M1 = message * 2
V1 = value * 2
M2 = message + '2'
V2 = value + 2
print(M1, M2, sep = '##')
print(V1, V2, sep = '@@')

Ans. Be SimpleBe Simple##Be Simple2
50@@27

Assessment

A. Multiple Choice questions.
1. Which of the following statements will result in an error?
a. number = 07 b. number = 70 c. number = '07' d. number = '70'
2. Which of the following is a hexadecimal number?
a. x0123 b. 0x123 c. 123x0 d. 1230x
3. Which of the following is equivalent to 1E2?
a. 100.0 b. 10.0 c. 1.0 d. 1000.0

4. Which of the following is NOT a sequence data type?
a. String b. Tuple c. Dictionary d. List

5. Which of the following pair of symbols is used to enclose values in a tuple?
a. [] b. {} c. <> d. ()

6. Which of the following data types does not support operatiors?
a. Set b. None c. Dictionary d. List

7. Which of the following operators has the highest precedence?
a. + b. % c. or d. =

8. Which of the following statements makes use of typecasting?
a. num = 10.7 + 40.6 b. num = 3+4j c. num = 10.7 + 40 d. num = 3 + 4

9. Which of the following statements will result in a syntax error?
a. num = int(input('Enter a number')) b. num = input('Enter a number')
c. num = input(int('Enter a number')) d. num = float(input('Enter a string'))

178 Touchpad Computer Science (Ver. 2.0)-XI