Who invented the first fuel cell?

Which of the following statements is correct regarding Electrochemical cells?

Which of the following statements regarding corrosion is true?

Which of the following statements is false?

What is the final oxidation state of manganese after the electrochemical reactions in a dry cell?

Which of the following statements regarding fuel cells is false?

Which of the following can be used as fuel in a fuel cell?

What is the EMF of a galvanic cell if E°cathode = 0.80 volts and E°anode = -0.76 volts?