Electrolysis And Storage Of Batteries Set 1

solar cells ✘ dry cells ✘ nickel-cadmium cells ✘ lead-acid batteries ✔

Dilute H2SO4 ✘ Concentrated H2SO4 ✘ Water ✘ Any of the above ✔

resistance of electrolyte ✘ electrode resistance ✘ surface contact resistance between electrode and electrolyte ✘ all above ✔

its voltage increases ✘ it gives out energy ✘ its cathode becomes dark chocolate brown in colour ✘ specific gravity of H2SO4 decreases ✔

no ✘ very little ✘ less ✘ more ✔

Less than ✘ More than ✘ Equal to ✘ None of the above ✔

two ✘ three ✘ four ✘ five ✔

below ✘ equal to ✘ above ✘ none of the above ✔

Lead-acid battery ✘ Nickel-iron battery ✘ Dry cell battery ✘ Silver oxide battery ✔

Two electrodes of different metaТs should be inserted in the electrolyte, not touching each other ✘ Electrolyte must chemically react with one of the electrodes ✘ Electrolyte liquid or paste should be conducting ✘ All above three conditions are necessary ✔