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CBSE Class 12 Informatics Practices Question 2 of 40

Practice Paper — Question 2

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Question

Question 2

When e-waste such as electronic circuit boards are burnt for disposal, the elements contained in them create a harmful chemical called ............... which causes skin diseases, allergies and an increased risk of lung cancer.

  1. Hydrogen
  2. Beryllium
  3. Chlorine
  4. Oxygen
Answer

Beryllium

Reason — When electronic circuit boards containing beryllium are burnt for disposal, they release beryllium oxide, a harmful chemical compound. Inhalation or skin contact with beryllium oxide can lead to skin diseases, allergies, and an increased risk of lung cancer.