Sunday 8 November 2020

Class 12th sumita arora solutions || Chapter 1- Python Revision tour - 1 || True/False 

1. The expression int(x) implies that the variable x is converted to integer.

 2. The value of the expressions 4/ (3*(2 - 1)) and 4/3*(2- 1) is the same.

 3. The value of the expressions 4/ (3*(4 - 2) and 4/3*(4-2) is the same.

 4. The expression 2**2**3 is evaluated as: (2**2) **3.

 5. A string can be surrounded by three sets of single quotation marks or by three sets of double quotation marks.

 6. Variables can be assigned only once.

 7. In Python, a variable is a placeholder for data.

 8. In Python, only if statement has else clause.

 9. Python loops can also have else clause.

 10. In a nested loop, a break statement terminates all the nested loops in one go.

 11. Do both the following represent the same list".
['a', b, c']
['c', 'a', 'b']

 12. A list may contain any type of objects except another list.

 13. There is no conceptual limit to the size of a list.

 14. All elements in a list must be of the same type.

 15. A given object may appear in a list more than once.

 16. The keys of a dictionary must be of immutable types.

 17. You can combine a numeric value and a string by using the + symbol.

 18. The clear( ) removes all the elements of dictionary but does not delete the empty dictionary.

 19. The max() and min() when used with tuples, can work if elements of the tuple are all of the same type.

20. A list of characters is similar to a string type.

 21. For any index n, s [: n] + s [n :] will give you original string s.

 22. A dictionary can contain keys of any valid Python types.

 23. The two statements x int(22.0/7) and x = int(22/7.0) yield the same results.

24. The given statement: x + 1 = x is a valid statement.

25. List slice is a list in itself.

26. Relational operators return either true or false.

27. break, continue, pass are the three conditional statements.

28. The % (modulus) operator cannot be used with the float data type.

29. The range() function is used to specify the length of a for-in loop.

30. Assignment operator can be used in place of equality operator in the test condition.

31. Comments in Python begin with a "$" symbol.

32. In print() function, if you use a concatenate operator (+) between two strings, both the strings are
joined with a space in between them.

33. If we execute Python code using prompt ">>>" then we call it an interpreter.

34. Lists are immutable while strings are mutable.

35. The keys of a dictionary must be of immutable types.

36. Lists and strings in Python support two-way indexing.

37. Tuples can be nested and can contain other compound objects like lists, dictionaries and other tuples.

Answer =


1. True

2. True

3. False

4. False

5. True

6. False

7. False

8. False

9. True

10. False

11. False

12. False

13. True

14. False

15. True

16. True

17. False

18. True

19. True

20. False

21. True

22. False

23. True

24. False

25. True

26. True

27. False

28. True

29. True

30. False

31. False

32. False

33. True

34. False

35. True

36. True

37. True

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