96 Pa
Rationalised 2023-24
Electrochemistry is the study of production of
electricity from energy released during spontaneous
chemical reactions  and the use of electrical energy
to bring about non-spontaneous chemical
transformations The subject is of importance both
for theoretical and practical considerations A large
number of metals, sodium hydroxide, chlorine,
fluorine and many other chemicals are produced by
electrochemical methods Batteries and fuel cells
convert chemical energy into electrical energy and are
used on a large scale in various instruments and
devices