Corrosion of iron occurs in the presence of moisture and oxygen and presence of `H^+` ions.________ and saline water increases rate of corrosion of iron.

What aspect of a reaction is infuenced by presence of catalyst which increases the rate or possibility of the reaction?

Rusting of iron is quicker in saline water than in ordinary water . Give reasons

Some reactions of propane are given: Hydrogen atoms are substituted one by one, in presence of sunlight. When heated in the absence of air, it decomposes to hydrocarbons with lesser molecular mass. Combines with oxygen to give CO_2 and H_2O .: Identify the type of reactions in each case.

Iron is a metal which corrodes fast. What are the factors that favour the corrosion of iron? In coastal regions, copper nails are preferred to iron nails. What could be the reason? Can you suggest some measures to prevent the corrosion of iron?

Some reactions of propane are given: i)Hydrogen atoms are substituted one by one, in presence of sunlight.ii) When heated in the absence of air, it decomposes to hydrocarbons with lesser molecular mass. iii)Combines with oxygen to give CO_2 and H_2O .: Write the chemcial of the reaction of ii