Which of the following occurs in Electrochemical cells used for detection of hydrogen sulphide?
A. Change in resistance
B. Redox reaction
C. Oxidation-reduction reaction
D. Change in colour
Answer:C
Which of the following occurs in Electrochemical cells used for detection of hydrogen sulphide?
A. Change in resistance B. Redox reaction C. Oxidation-reduction reaction D. Change in colour
Explanation: In Electrochemical cells, an oxidation-reduction reaction occurs in the presence of hydrogen sulphide. A current starts flowing and it is proportional to the concentration of hydrogen sulphide.