Which country developed single Dose Covid-19 vaccine Janssen of Johnson & Johnson?

  • (A) China
  • (B) UK
  • (C) USA
  • (D) Germany

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  • World’s third largest diamond discovered in?
    • (A) Botswana
    • (B) Lesotho
    • (C) Mozambique
    • (D) Zambia

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