Correct answer
C. A cylinder and a plunger
Explanation
The correct answer is A cylinder and a plunger.
Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of________?
Flux addition during smelting of ore is done to________?
The wetted wall tower is used to determine________?
Ringelmann chart is used for the evaluation of ________ pollution?
Which is a catalyst promoter used in catalytic ammonia synthesis reaction?
A system is said to be isopiestic, if there is no ________ change?