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CHLORINE GAS MCQs

Total Questions : 20 | Page 2 of 2 pages
Question 11. Chlorine is used as a bleaching agent
  1.    oxidation
  2.    chlorination
  3.    hydrogenation
  4.    reduction
 Discuss Question
Answer: Option A. -> oxidation
Question 12. Why is chlorine bubbled through water during the latter’s treatment?
  1.    To improve taste
  2.    To remove hardness
  3.    To kill microorganisms
  4.    To remove foul odor
 Discuss Question
Answer: Option C. -> To kill microorganisms
Question 13. To which group does chlorine element belong?
  1.    Halides
  2.    Pre inert
  3.    Chalcogens
  4.    Halogens
 Discuss Question
Answer: Option D. -> Halogens
Question 14. How is chlorine gas manufactured industrially?
  1.    Haber process
  2.    Chlor-alkali process
  3.    Ostwald process
  4.    Deacon process
 Discuss Question
Answer: Option B. -> Chlor-alkali process
Question 15. What will be the result of subjecting a blue litmus to chlorine gas?
  1.    Remain blue
  2.    Turn to red only
  3.    Turn to white finally
  4.    Turn white in the first go
 Discuss Question
Answer: Option C. -> Turn to white finally
Question 16. Chlorine falls in the halogen group in the periodic table
  1.    salt-forming
  2.    hidden
  3.    heavenly
  4.    reactive
 Discuss Question
Answer: Option A. -> salt-forming
Question 17. Chlorine is added to most public water supplies in order to minimize tooth decay
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 18. Carl Wilhelm Scheele, the 18th century scientist, discovered chlorine, but thought it was a compound containing this element:
  1.    Oxygen
  2.    Fluorine
  3.    Hydrogen
  4.    Helium
 Discuss Question
Answer: Option A. -> Oxygen
Question 19. Some tree frogs use a poisonous chlorine compound in their skin
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 20. Which of the following is a suitable test to identify presence of chlorine atoms or ions?
  1.    Smell the compound
  2.    Heat the compound strongly
  3.    Add silver nitrate followed by warming the solution
  4.    Acidify the given compound and add silver nitrate
 Discuss Question
Answer: Option D. -> Acidify the given compound and add silver nitrate

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