Test Your Pandas Knowledge – 20 Questions with Answers

The test begins as soon as you click the Start button. You may continue working until the time limit expires. When the time is up, your test will be submitted automatically, whether you have finished or not. Please manage your time carefully and review your answers before the deadline.

When your time is up, your test will be submitted automatically, whether you have finished answering or not. Please manage your time wisely.

Pandas MCQ

Test your Python Pandas knowledge with this 20-question multiple-choice quiz. Includes answers and explanations on key Pandas concepts like DataFrames, Series, CSV handling, missing values, sorting, merging, and more. Perfect for beginners and interview preparation.

1 / 20

1. Which of the following is true about Pandas?

1. Built on top of NumPy

2. Built on top of TensorFlow

3. Only works with SQL

4. Only works with JSON

2 / 20

2. How to get first 10 rows of DataFrame df?

1. df.tail(10)

2. df.head(10)

3. df.first(10)

4. df.rows(10)

3 / 20

3. Which method is used to drop missing values?

1. df.remove_na()

2. df.clear_na()

3. df.delete_na()

4. df.dropna()

4 / 20

4. How to fill missing values with 0?

1. df.fillna(0)

2. df.replace(0)

3. df.dropna(0)

4. df.null(0)

5 / 20

5. What does df['col'].unique() return?

1. Unique rows of DataFrame

2. Unique values of a column

3. Count of unique values

4. Sorted column

6 / 20

6. Which function combines DataFrames vertically (row-wise)?

1. pd.concat([...], axis=0)

2. pd.concat([...], axis=1)

3. pd.merge()

4. pd.join()

7 / 20

7. How to merge two DataFrames?

1. pd.concat()

2. pd.merge()

3. Both a and b

4. pd.append()

8 / 20

8. Which method is used to sort values in a DataFrame?

1. df.sort()

2. df.order_by()

3. df.sort_values()

4. df.arrange()

9 / 20

9. How to reset DataFrame index?

1. df.reset_index()

2. df.index_reset()

3. df.new_index()

4. df.index()

10 / 20

10. Which method removes duplicate rows?

1. df.remove_duplicates()

2. df.drop_duplicates()

3. df.del_duplicates()

4. df.clean()

11 / 20

11. What does df.isnull().sum() do?

1. Counts duplicate rows

2. Counts NaN values

3. Removes nulls

4. Fills missing values

12 / 20

12. How to select a column named "age" from DataFrame df?

1. df.age

2. df['age']

3. Both a and b

4. df(age)

13 / 20

13. Which method is used to get a statistical summary?

1. df.mean()

2. df.describe()

3. df.info()

4. df.summary()

14 / 20

14. What does df.shape return?

1. Number of null values

2. Number of columns only

3. File size

4. Dimensions of DataFrame

15 / 20

15. Which method gives info about DataFrame datatypes?

1. df.shape

2. df.describe()

3. df.info()

4. df.types()

16 / 20

16. What does df.head(3) return?

1. Last 3 rows

2. First 3 columns

3. Last 3 columns

4. First 3 rows

17 / 20

17. How do you create a Pandas Series from a Python list?

1. pd.DataFrame(list)

2. pd.ListSeries(list)

3. pd.Series(list)

4. pd.Table(list)

18 / 20

18. Which of the following is the core data structure in Pandas?

1. List and Tuple

2. Series and DataFrame

3. Dictionary and Set

4. Array and Matrix

19 / 20

19. What does Pandas mainly deal with?

1. Audio data

2. Image data

3. Tabular/structured data

4. Video data

20 / 20

20. Which function is used to read a CSV file in Pandas?

1. pd.read()

2. pd.read_csv()

3. pd.csv_read()

4. pd.load_csv()

Your score is

The average score is 0%