Which of the following statements is/are CORRECT?
1)A nickel-cadmium battery is an example of a secondary or rechargeable battery,often used in rechargeable cordless appliances.
2)Hydrogen-oxygen fuel cells use the heat of combustion of hydrogen to recharge lead storage batteries.
3)LeClanché cells are the most efficient rechargeable batteries,but they are rarely used due their high cost of production.
A) 1 only
B) 2 only
C) 3 only
D) 1 and 3
E) 1,2,and 3

Question

Quizplus · Accepted Answer

Statement 1 is correct, as nickel-cadmium batteries are indeed rechargeable and commonly used in cordless appliances.
Statement 2 is incorrect, as hydrogen-oxygen fuel cells generate electricity through an electrochemical reaction rather than combustion, and they do not recharge lead storage batteries.
Statement 3 is incorrect, as LeClanché cells are not the most efficient rechargeable batteries, and their production cost is not higher than other rechargeable batteries.

Which of the Following Statements Is/are CORRECT