Hydrogen MCQ Questions and Answers Quiz

31. Why does H+ ion always get associated with other atoms or molecules?

  1. Ionisation enthalpy of hydrogen resembles that of alkali metals.
  2. Its reactivity is similar to halogens.
  3. It resembles both alkali metals and halogens.
  4. Loss of an electron from hydrogen atom results in a nucleus of very small size as compared to other atoms or ions. Due to smal size it cannot exist free.

32. You can use a hydrogen fuel cell to power

  1. Cars/Busses
  2. Fork-lifts
  3. Cell phones
  4. All of the above
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