Which of the following statements is true regarding a primary cell?(a) The electrode reactions can be reversed(b) It can be recharged(c) An example of a primary cell is a mercury cell(d) An example of a primary cell is a nickel-cadmium storage cellThe question was asked in an online quiz.My doubt stems from Electrochemistry in division Electrochemistry of Chemistry – Class 12

Which of the following statements is true regarding a primary cell?(a)

1.	Which of the following statements is true regarding a primary cell?(a) The electrode reactions can be reversed(b) It can be recharged(c) An example of a primary cell is a mercury cell(d) An example of a primary cell is a nickel-cadmium storage cellThe question was asked in an online quiz.My doubt stems from Electrochemistry in division Electrochemistry of Chemistry – Class 12
Answer» Correct choice is (c) An example of a PRIMARY cell is a mercury cell To elaborate: A primary cell is one in which the ELECTRODE reactions occur only once and cannot be REVERSED by applying electrical energy. Therefore, primary cells cannot be RECHARGED. A mercury cell is an example of a primary cell, whereas a nickel-cadmium storage cell is an example of a secondary cell.

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