Correct answer
A. Zircon powder
Explanation
The correct answer is Zircon powder.
The calorific value of a gas of composition CO2 = 20%, H2 = 50%, CH4 = 30%, is y. If the composition of gas is changed to H2 = 50%, CH4 = 30%, CO2 = 10%, N2 = 10%, then the calorific value will be________?
When a high liquid hold up is required in a reactor for gas liquid reaction, use ________ column?
A rectangular surface 3′ × 4′, has the lower 3 edge horizontal and 6′ below a free oil surface (sp. gr. 0.8). The surface inclination is 300 with the horizontal. The force on one side of the surface is (where, y = specific weight of water)?
Water-ethyl alcohol solution can be concentrated (in respect of alcohol concentration) by ________ distillation?
Effluent treatment cost in a chemical plant is categorised as the ________ cost?
A tube mill as compared to a ball mill________?