Which of the following is used as an electrolyte in an H2-O2 fuel cell?

Which of the following is used as an electrolyte in an H2-O2 fuel cell? Correct Answer KOH

The general design of the H2-O2 fuel cell consists of porous carbon electrodes containing suitable catalysts (generally finely divided platinum and palladium) incorporated in them. Concentrated KOH or NaOH solution is placed between the electrodes to act as the electrolyte.
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H2O2  কে  MnO4 দ্বারা জারণ করা হলে কোষ বিভব ,   E°cell  হিসাব কর। অর্ধ - বিক্রিয়াগুলো হল-  2H+O2 2 e- ⇔H2O2, E°=+1.51V 
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In case of an automobile battery, following are the reasons which will cause a defect of
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2. High specific gravity of electrolyte
3. Freezing of electrolyte
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