5733Chemical EngineeringMedium
Calorific value of gobar gas (containing CH4 = 60%, H2 = 10% ; CO2 = 30%) may be about ________ Kcal/Nm3?
A3,200
B10,200
C5,400
D1,800
Correct answer
C. 5,400
Explanation
The correct answer is 5,400.
Correct answer
C. 5,400
Explanation
The correct answer is 5,400.
________ conveyors are also called scrapers?
The compressive strength of cement should not be less than about 110Kg/cm2 after three days & not less than 170Kg/cm2 after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about ________ cm2/gm?
If the rate of a chemical reaction becomes slower at a given temperature, then the________?
Dacron is a/an________?
Silicone resins, which are highly water repellent and has good heat resistance cannot be used________?
In sewage treatment, its sedimentation is speeded up by commonly adding________?