Reaction of magnesium(Mg) and boiling water is a fast process.
The reaction of magnesium with cold water does not occur and if occurs it is very slow.
Increasing the temperature of water increases the reactivity of magnesium with water.
The reaction of Magnesium with boiling water is comparatively a much faster process in comparison to its reaction with cold water.
It results in the production of magnesium hydroxide (Mg(OH)2) and hydrogen gas(H2)
Mg (s)+ 2H2O(l) Mg(OH)2(s)+ H2(g)
Magnesium hydroxide produced is soluble in water.
Final answer: True, Reaction of magnesium(Mg) and boiling water is a fast process.