SawaalBoxसवाल बॉक्स
2008 · Q60Science & TechnologyChemistryeasy

What is Agent Orange?

  1. (a)An ace spying group trained by the Police in London
  2. (b)A weed-killing chemical used by the US Military in the Vietnam War
  3. (c)A technique used in the advanced railway safety procedure
  4. (d)A special chemical used in making alloy steel
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Official answer(b) A weed-killing chemical used by the US Military in the Vietnam War

2010 · Q11Science & TechnologyChemistryeasy

Chlorination is a process used for water purification. The disinfecting action of chlorine is mainly due to

  1. (a)The formation of hydrochloric acid when chlorine is added to water
  2. (b)The formation of hypochlorous acid when chlorine is added to water
  3. (c)The formation of nascent oxygen when chlorine is added to water
  4. (d)The formation of hydrogen when chlorine is added to water
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Official answer(b) The formation of hypochlorous acid when chlorine is added to water