📊 Pandas
Q. Which pandas function is used to check if elements in a DataFrame are null?
  • (A) isnull()
  • (B) isna()
  • (C) Both A and B
  • (D) notnull()
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✅ Correct Answer: (C) Both A and B

Explanation: Both isnull() and isna() can be used interchangeably to detect missing values in pandas.

Explanation by: Sikhar Chaudhary
Both isnull() and isna() can be used interchangeably to detect missing values in pandas.

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