“The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium”. This is ________ law?
Correct answer
B. Kirchoff’s
Explanation
The correct answer is Kirchoff’s.
Correct answer
B. Kirchoff’s
Explanation
The correct answer is Kirchoff’s.
Styrene (a monomer for the production of polystyrene) is commercially produced by ________?
Emf developed by a thermocouple, while measuring a temperature of 600°C is about 5.5 mV. The type of thermocouple used is________?
Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain ________?
Which of the following minerals is not subjected to magnetic separation method?
Pine oil and Cresylic acid are used as ________ in the froth floatation process?
In a laboratory test run, the rate of drying was found to be 0.5 x 10-3 kg/m2.s, when the moisture content reduced from 0.4 to 0.1 on dry basis. The critical moisture content of the material is 0.08 on a dry basis. A tray dryer is used to dry 100 kg (dry basis) of the same material under identical conditions. The surface area of the material is 0.04 m2/kg of dry solid. The time required (in seconds) to reduce the moisture content of the solids from 0.3 to 0.2 (dry basis) is________?