S Block Elements Question 272
Question: When sodium chloride solution is electrolysed, the gas that is liberated at the cathode is
[Kurukshetra CEE 1998]
Options:
A) Oxygen
B) Hydrogen
C) Chlorine
D) Air
Show Answer
Answer:
Correct Answer: B
Solution:
$ 2NaCl+2H_2O\xrightarrow{Electrolysis} $ $ 2NaOH+\underset{Anode}{\mathop{Cl_2}}+\underset{Cathode}{\mathop{H_2}} $
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