Correct answer
C. About 3 times
Explanation
The correct answer is About 3 times.
Triple superphosphate is chemically represented as________?
________ heat exchanger is the most suitable, when the temperature of shell side fluid is much higher than that of tube side?
A mercury thermometer cannot be used to measure the temperature below the freezing point of mercury, which is ________ °C?
A solid metallic block weighing 5 kg has an initial temperature of 500°C. 40 kg of water initially at 25°C is contained in a perfectly insulated tank. The metallic block is brought into contact with water. Both of them come to equilibrium. Specific heat of block material is 0.4 kJ.kg-1. K-1. Ignoring the effect of expansion and contraction and also the heat capacity to tank, the total entropy change in kJ.kg-1, K-1 is________?
The main raw material for manufacture of silicon carbide refractories is________?
Separation of materials into products based on the difference of their sizes is called________?