Crystallization forms, refers a shape and colour. Crystallization of Water of a part of crystal structure. Where we get shape and colour.

When a beam of light passes from a denser medium to a rarer medium, its velocity increases and wavelength decreases, per frequency remains constant.

Where, “i” (angle of incidence ) and Refractive index “n” = sin i/sin r. Where “r” (angle of refraction) and sin “i”/sin “r” for a particular medium remains same i.e., constant.

Sodium hydroxide (a strong base) reacts with hydrochloric acid to form sodium chloride and water. NaOH(aq) +HCl(aq)NaCl(aq) +H2O(l) Since, in the reaction between an acid and a base both neutralize each other.

Sodium hydroxide (a strong base) reacts with hydrochloric acid to form sodium chloride and water. NaOH(aq) +HCl(aq)NaCl(aq) +H2O(l) Since, in the reaction between an acid and a base both neutralize each other, it is known as neutralization reaction.