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HYDROGEN MCQs

Total Questions : 35 | Page 4 of 4 pages
Question 31. Hydrogen with active metals forms:
  1.    Water H2O
  2.    Ammonia NH3
  3.    Hydrates KH, LiH
  4.    Bases NaOH
 Discuss Question
Answer: Option C. -> Hydrates KH, LiH
Question 32. Which reaction shows preparation of Hyderogen from active metals and water:
  1.    Na + H2O = NaOH
  2.    Li + OH =LiOH
  3.    H + O = HO
  4.    K + H2O = KOH + H2
 Discuss Question
Answer: Option D. -> K + H2O = KOH + H2
Question 33. When hydrogen reacts with nitrogen forms:N2 + H2 =
  1.    Ammonium HN3
  2.    Water H2O
  3.    Ammonia NH3
  4.    Nitrogen oxide NO
 Discuss Question
Answer: Option C. -> Ammonia NH3
Question 34. The combustion of hydrogen produces _________ as by-product
  1.    water
  2.    carbon dioxide
  3.    carbon monoxide
  4.    carbon
 Discuss Question
Answer: Option A. -> water
Question 35. _________________________is connected to the positive terminal of the battery
  1.    cathode
  2.    anode
  3.    none
  4.    Both A & B
 Discuss Question
Answer: Option B. -> anode

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