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Class 12Chemistryp-Block Elements (Class 12)Oxygen family
Medium

Select the correct statement.

  • A
    $O_3$ is a dry bleaching agent.
  • B
    Phosgene,tear gas,and mustard gas are all non-poisonous.
  • C
    Sulphuric acid is used in petroleum refining.
  • D
    Both $(A)$ and $(C)$ are correct.
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Class 12 Questions

Class 12

Chemistry Questions

Chapter

p-Block Elements (Class 12)

Subtopic

Oxygen family

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