Question:
Which of the following methods is used to prepare dihydrogen with purity greater than 99.5 % ?
Which of the following methods is used to prepare dihydrogen with purity greater than 99.5 % ?
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Nickel electrodes + Warm $\text{Ba(OH)}_2$ = Ultra Pure $\text{H}_2$.
Updated On: May 14, 2026
- Electrolysis of pure water
- Action of NaOH on zinc
- From hydrocarbons
- Electrolysis of warm \( \text{Ba(OH)}_2 \) solution
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Concept
High-purity dihydrogen is required for specific industrial and laboratory applications.
Step 2: Meaning
Standard methods like the Lane's process or Bosch process often leave impurities.
Step 3: Analysis
Electrolysis of an aqueous barium hydroxide solution using nickel electrodes is the standard method to obtain $> 99.95%$ pure hydrogen.
Step 4: Conclusion
The method specified in industrial chemistry for ultra-high purity is the electrolysis of warm $\text{Ba(OH)}_2$. Final Answer: (D)
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