Enlist the characteristics of the chemical reactions and give two examples each
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Characteristics of Chemical reaction
1)Evolution of gas. Some chemical reactions are characterised by the evolution of gas.
2)Formation of precipitate. Some chemical reactions are characterised by the formation of precipitate.
3)Change in colour.
4)Change in temperature.
5)Change of state.
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(i) Goitre (ii) Cheilosis (iii) Rickets in children and osteomalacia in adults (iv) Dental caries (v) Scurvy (vi) Xerophthalmia and night blindness (vii) Pernicious anaemia (viii) Microcytic anaemia.
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