Question

The acid used in lead storage battery is:

• A. nitric acid
• B. sulphuric acid
• C. hydrochloric acid
• D. phosphoric acid

Answer 1

Answer: (B)

sulphuric acid

Sulpuric acid used in lead storage battery to forms lead(||) sulfate ($PbS{O}_4$) on negative as well as positive plate.
$Pb+HS{O}_4^{-}\to PbS{O}_4+H^{+}+2e^{-}$
$Pb{O}_2+HS{O}_4^{-}+2e^{-}\to PbS{O}_4+2H_{2}O$