Correct answer
B. Phosphate rock with phosphoric acid
Explanation
The correct answer is Phosphate rock with phosphoric acid.
Which of the following is the most suitable for preheating combustion air above 650°C?
________ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower?
Clock pendulums are usually made of ________ steel?
Which of the following variables does not affect the furnace capacity?
In a closed loop system, the process to be controlled is an integrating process with transfer function 1/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit________?
Ethyl mercaptan is a/an ________ compound?