Chemistry
Grade-8
Easy
Question
Why only granulated zinc is preferred for the laboratory reparation of Hydrogen?
- It contains impurity copper, which acts as a positive catalyst
- It contains nickel impurity that acts as a positive catalyst
- Granulated zinc contains more surface area
- Granulated zinc is easily available
Hint:
Pure zinc is not used for the reaction.
The correct answer is: It contains impurity copper, which acts as a positive catalyst
The correct option is a)It contains immunity copper, which acts as a positive catalyst.
Zinc granules are used in the production of hydrogen in laboratories. This is because it is made of zinc, and has copper impurities which acts as a catalyst and speeds up the reaction. The copper impurities have a catalysing effect and thus pure zinc is not used for the reaction.
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