Published by:
CGP EDU Academic Team
Published on: August 13, 2026
When 
gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from
A
zero to 
and zero to 
and zero to
B
zero to 
and zero to 
and zero to
C
zero to 
and zero to 
and zero to
D
zero to 
and zero to 
and zero to
Text Solution
Verified by ExpertsThe correct answer is:
B
0 | -1 | +5 | ||||||
+ | NaOH (hot and conc) | + | + |
This is an example of disproportionation reaction and oxidation state of chlorine changes from 
to 
and 
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