In the manufacture of cement the kiln is maintained at this temperature

The plastic used in making refrigerator lining is

Cement was invented by

The slurry contains 40% of 

The fibre used for melt spinning is

The micronutrient among the following is

The primary nutrient is

An example for chromophore is 

The chemical used to get blue colour to glass is 

The raw material used for glass are lime stone, soda ash and