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All questions of Strings for EmSAT Achieve Exam

Which of the following methods is used to convert a string to uppercase in Python?
  • a)
    toUpper()
  • b)
    upper()
  • c)
    uppercase()
  • d)
    to_uppercase()
Correct answer is option 'B'. Can you explain this answer?

Sonal Yadav answered
The upper() method is used to convert a string to uppercase in Python. It returns a new string with all alphabetic characters converted to uppercase.
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What is the output of the following code snippet?
text = "Python is fun"
print(text[7:])
  • a)
    is fun
  • b)
    fun
  • c)
    is
  • d)
    Error
Correct answer is option 'A'. Can you explain this answer?

Sonal Yadav answered
The slice notation [7:] returns a substring starting from index 7 until the end of the string. In this case, the output is "is fun".

Which method is used to determine the length of a string in Python?
  • a)
    length()
  • b)
    count()
  • c)
    size()
  • d)
    len()
Correct answer is option 'D'. Can you explain this answer?

Nasser Al Hadi answered
Understanding String Length in Python
In Python, determining the length of a string is a common operation that can be easily performed using the built-in `len()` function. Let's explore why this is the correct choice among the options provided.
Why `len()` is the Correct Answer?
- The `len()` function is specifically designed to return the number of items in an object, including strings.
- When applied to a string, `len()` counts the number of characters, including spaces and punctuation.
Examples of Using `len()`
- Here’s a simple example:
python
my_string = "Hello, World!"
length = len(my_string)
print(length) # Output: 13
- In this example, `len(my_string)` returns 13, as there are 13 characters in "Hello, World!".
Why Other Options are Incorrect?
- length(): This is not a valid function in Python for strings.
- count(): This method counts occurrences of a specified substring within the string, not the total length.
- size(): Python does not have a built-in `size()` function for strings.
Conclusion
Using `len()` is the most efficient and straightforward way to determine the length of a string in Python. It is a fundamental function that every Python programmer should be familiar with.

What is the output of the following code snippet?
text = "Hello, World!"
print(text[::-1])
  • a)
    Hello, World!
  • b)
    dlroW ,olleH
  • c)
    !dlroW ,olleH
  • d)
    Error
Correct answer is option 'B'. Can you explain this answer?

Zainab Adnan Al Kamali answered
"The output of the code snippet is missing as the code is incomplete. The variable 'text' is not given any value or assigned any operation, so there is no output to determine."

What will be the output of the following code?
str = "Hello World"
print(str.split())
  • a)
    ['Hello', 'World']
  • b)
    Hello World
  • c)
    ['Hello World']
  • d)
    ['Hello', ' ', 'World']
Correct answer is option 'A'. Can you explain this answer?

Fatima Salem Al Balushi answered
Understanding the Code
The provided code snippet involves a string and the `split()` method in Python.
Code Breakdown:
- String Definition:
- The variable `str` is assigned the value `"Hello World"`.
- Using split() Method:
- The `split()` method is called on the string `str`. By default, this method splits a string into a list where each word is a list item.
Default Behavior of split():
- The `split()` method removes any whitespace and splits the string at spaces.
- If no arguments are provided, it treats consecutive whitespace as a single delimiter.
Expected Output:
- In this case, the string `"Hello World"` has a single space between "Hello" and "World".
- Thus, the output of `str.split()` will be a list containing the two words: `["Hello", "World"]`.
Analysis of Options:
- a) `[Hello, World]` - Correct, as it accurately represents the split result.
- b) `Hello World` - Incorrect, as this is just the original string, not a list.
- c) `[Hello World]` - Incorrect, as this would imply the whole string is treated as a single list item.
- d) `[Hello, , World]` - Incorrect, as it suggests there are extra spaces which are not present in the original string.
Conclusion:
The correct answer is option 'A' because the method returns a list of words split by spaces without any additional elements or empty strings.

What will be the output of the following code?
str1 = "Hello"
str2 = "hello"
print(str1 == str2)
  • a)
    True
  • b)
    False
  • c)
    Error: Case-sensitive comparison
  • d)
    Error: Invalid syntax
Correct answer is option 'B'. Can you explain this answer?

Sonal Yadav answered
String comparisons are case-sensitive in Python. In this case, "Hello" and "hello" are different strings, so the comparison str1 == str2 evaluates to False.

What will be the output of the following code?
str = "Python Programming"
print(str.index("Prog"))
  • a)
    7
  • b)
    10
  • c)
    11
  • d)
    Error: substring not found
Correct answer is option 'C'. Can you explain this answer?

Sonal Yadav answered
The index() method returns the index of the first occurrence of a specified substring within a string. In this case, it returns the index of the substring "Prog" in the string "Python Programming", which is 11.

Which of the following is the correct way to define a string in Python?
  • a)
    str = "Hello"
  • b)
    str = 'Hello'
  • c)
    str = Hello
  • d)
    str = [H, e, l, l, o]
Correct answer is option 'B'. Can you explain this answer?

Sonal Yadav answered
In Python, strings can be defined using single quotes ('') or double quotes (""). Option (b) demonstrates the correct way to define a string.

How can you determine the length of a string in Python?
  • a)
    len(string)
  • b)
    string.length()
  • c)
    string.len()
  • d)
    length(string)
Correct answer is option 'A'. Can you explain this answer?

Sonal Yadav answered
The len() function returns the length of a string in Python. It can be used to determine the number of characters in a string.

What is the output of the following code snippet?
text = "Hello,World"
print(text.split(","))
  • a)
    ['Hello', 'World']
  • b)
    ['Hello,World']
  • c)
    'Hello', 'World'
  • d)
    Error
Correct answer is option 'A'. Can you explain this answer?

Sonal Yadav answered
The split() method is used to split a string into a list of substrings based on the specified delimiter. In this case, the string is split at the comma (",") character, resulting in the list ['Hello', 'World'].

Which of the following methods is used to remove leading and trailing whitespaces from a string in Python?
  • a)
    remove()
  • b)
    strip()
  • c)
    trim()
  • d)
    clean()
Correct answer is option 'B'. Can you explain this answer?

Sonal Yadav answered
The strip() method is used to remove leading and trailing whitespaces from a string in Python. It does not modify the original string but returns a new string with the whitespaces removed.

What is the output of the following code snippet?
text = "Python is fun"
print(text.startswith("Java"))
  • a)
    True
  • b)
    False
  • c)
    Error
  • d)
    None
Correct answer is option 'B'. Can you explain this answer?

Sonal Yadav answered
The startswith() method is used to check if a string starts with a specified prefix. In this case, the output is False because the string "Python is fun" does not start with "Java".

What will be the output of the following code?
str = "Python Programming"
print(str.count("P"))
  • a)
    1
  • b)
    2
  • c)
    0
  • d)
    Error: Invalid syntax
Correct answer is option 'A'. Can you explain this answer?

Sonal Yadav answered
The count() method returns the number of occurrences of a specified substring in a string. In this case, it counts the number of occurrences of the letter "P" in the string "Python Programming", which is 1.

What will be the output of the following code?
str = "Python Programming"
print(str.replace("Python", "Java"))
  • a)
    Java Programming
  • b)
    Python Java
  • c)
    Python Programming
  • d)
    Error: Strings are immutable
Correct answer is option 'A'. Can you explain this answer?

Sonal Yadav answered
The replace() method replaces occurrences of a specified substring with another substring in a string. In this case, it replaces "Python" with "Java" in the string "Python Programming".

What is the output of the following code snippet?
text = "Python is fun"
print(text.find("is"))
  • a)
    0
  • b)
    2
  • c)
    7
  • d)
    -1
Correct answer is option 'C'. Can you explain this answer?

Sonal Yadav answered
The find() method returns the index of the first occurrence of a specified substring in a string. If the substring is not found, it returns -1. In this case, the substring "is" is found at index 7.

What is the output of the following code snippet?
name = "John"
print(name[1:3])
  • a)
    J
  • b)
    o
  • c)
    oh
  • d)
    n
Correct answer is option 'C'. Can you explain this answer?

Sonal Yadav answered
The slice notation name[1:3] returns the characters at index 1 and 2 of the string name, excluding the character at index 3. Therefore, the output is "oh".

What will be the output of the following code?
 
  • a)
    True
  • b)
    False
  • c)
    Error: Invalid syntax
  • d)
    Error: String doesn't support startswith() method
Correct answer is option 'A'. Can you explain this answer?

Sonal Yadav answered
The startswith() method returns True if a string starts with a specified substring. In this case, "Hello World" starts with "Hello", so the result is True.

What will be the output of the following code?
str = "Python Programming"
print(str[7])
  • a)
    P
  • b)
    m
  • c)
    g
  • d)
    R
Correct answer is option 'A'. Can you explain this answer?

Sonal Yadav answered
In Python, strings can be accessed using indexing. The index starts from 0, so str[7] refers to the character at index 7, which is "P".

What will be the output of the following code?
str = "Python"
print(str[-2:])
  • a)
    th
  • b)
    on
  • c)
    Py
  • d)
    thon
Correct answer is option 'B'. Can you explain this answer?

Sonal Yadav answered
Negative indexing is used to access characters from the end of a string. str[-2:] returns the last two characters of the string "Python", which are "on".

What does the join() method do in Python?
  • a)
    Concatenates two strings
  • b)
    Splits a string into a list of substrings
  • c)
    Reverses a string
  • d)
    Joins the elements of a list into a single string
Correct answer is option 'D'. Can you explain this answer?

Sonal Yadav answered
The join() method is used to join the elements of a list into a single string. It takes a list as an argument and returns a string where the elements of the list are concatenated with the specified separator.

What is the result of the following expression?
"Python" + "Programming"
  • a)
    PythonProgramming
  • b)
    Python Programming
  • c)
    Python + Programming
  • d)
    Error: Cannot concatenate strings
Correct answer is option 'A'. Can you explain this answer?

Sonal Yadav answered
The + operator is used for concatenating strings in Python. In this case, it concatenates the strings "Python" and "Programming" to form "PythonProgramming".

Which of the following methods can be used to convert a string into a list in Python?
  • a)
    split()
  • b)
    list()
  • c)
    splitlist()
  • d)
    convert()
Correct answer is option 'A'. Can you explain this answer?

Sonal Yadav answered
The split() method is used to split a string into a list of substrings based on the specified delimiter. It returns a list of substrings.

Chapter doubts & questions for Strings - Python for EmSAT Achieve 2025 is part of EmSAT Achieve exam preparation. The chapters have been prepared according to the EmSAT Achieve exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for EmSAT Achieve 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.

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