Which of the following is incorrect for a lead storage battery?A. The anodes of a lead storage battery are filled with the spongy lead alloyB. The cathodes are filled with lead dioxide.C. Both electrodes are in contact with a solution of `H_(2)SO_(4)` in waterD. The electrolytic solution is about `25%` sulphuric acid by mass.

Which of the following is incorrect for a lead storage battery?A. The

1.	Which of the following is incorrect for a lead storage battery?A. The anodes of a lead storage battery are filled with the spongy lead alloyB. The cathodes are filled with lead dioxide.C. Both electrodes are in contact with a solution of `H_(2)SO_(4)` in waterD. The electrolytic solution is about `25%` sulphuric acid by mass.
Answer» Correct Answer - D Lead storage cell is the best known eample of a secondary battery. This voltaic cell consists of electrodes of lead alloy grids., one electrode is packed with a spongy lead to from the anode, and the other electrode is packed with lead dioxide to form the cathode. Both are bathed in an aqueous solution of sulphuric acid which is `38% H_(2)SO_(4)` by mass amd has density `1.30 g//cm^(3)`.

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Define molar conductivity of a solution and explain how molar conductivity changes with change in concentration of a solution for a weak and a strong electrolyte.
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Based on the data given below, the correcy order of reducing power is: `Fe_((aq.))^(3+) + e rarr Fe_((aq.))^(2+), E^(@) = +0.77 V` `Al_((aq.))^(3+) + 3e rarr Al_((s)), E^(@) = -1.66 V` `Br_(2(aq.)) + 2e rarr 2Br_((aq.))^(-), E^(@) = +1.08 V`A. `Br^(-) lt Fe^(2+) lt Al`B. `Fe^(2+) lt Al lt Br^-`C. `Al lt Br^(-) lt Fe^(2+)`D. `Al lt Fe^(2+) lt Br^(-)`
What are elementary reactions ?

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