Chemistry
Define :
(a) Photochemical reaction
(b) Electrochemical reaction
Give one example in each case.
Related Questions
Name
(a) a carbonate which does not decompose on heating.
(b) a nitrate which produces oxygen as the only gas.
(c) a compound which produces carbon dioxide on heating
(d) a nitrate which produces brown gas on heating.
Which is the most reactive element in this question :
CuSO4 + Fe ⟶ FeSO4 + Cu
Give an example of a reaction where the following are involved
(a) Evolution of heat
(b) Absorption of heat
(c) High pressure is required
Why does the blue colour of copper sulphate solution fade on adding iron fillings ?