A

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Q. What is the result of `df[df['col'].isnull()]`?

  • (A) DataFrame with null values in 'col'
  • (B) Null rows removed
  • (C) Column with filled values
  • (D) Only NaN values in all columns
  • Correct Answer - Option(A)
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Explanation by: Admin
`isnull()` creates a boolean mask, used to filter rows with nulls in 'col'.

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