SOME IMPORTANT FACTS(PART-I)

1. Age of fossils and archeological excavation is determined by radioactive carbon(C14).
2. Diamond has maximum refractive index and due to total internal reflection. It has luster.
3. Chloroform in sunlight forms poisonous gas 'Phosgene'(COCl2).
4. To decrease the basicity of soil gypsum is used.
5. In the preparation of telecom powder theo-phestal mineral is used.
6. Potassium chloride is most suitable for the removal of permanent hardness of water.
7. To avoid melting of ice gelatine is used.
8. When dry ice is heated it is directly converted into gas.
9. Saccharine is prepared from toulene.
10. Cream is a type of milk in which amount of fat is increased while amount of water decreases.