How is a lead storage battery charged
a a direct current is applied to it
b a magnet is held close to it
c alternating current is forced through it
d the pressure on it is increased

i think its a

The answer should be c.

The answers is bad germs in their

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -

H+ + cn– + li+ + oh– mc001-4.jpg li+ + cn– + h2o