Solution:Rusting of Iron, Breaking of Feldspar to clay and Acid Action are example of chemical weathering. Weathering can be categorised in 3 parts
(i) Physical Weathering - weathering due to physical Actions (insolation, dew and air)
(ii) Chemical Weathering - Weathering due to chemical action (Hydration, carbonisation, oxidation etc)
(iii) Biological Weathering - Weathering due to vegetations and human actions.