RRB Group D 1-Dec-2013 Shift 1 Solved Paper

In the given options, all accept‘dissolution of salt in water’ are physical change whereas dissolving salt in water is an example of a chemical change. The reactant(sodium chloride or NaCl) is different from the products (sodium cation and chlorine anion). Thus,any ionic compound that is soluble in water would experience a chemical change. In contrast, dissolving a covalent compound,such as sugar does not result in a chemical reaction