A. Abradability
B. Reactivity
C. Agglutinating (binding) properties
D. Porosity
0
Main component of sewage gas produced during anaerobic decomposition of organic waste (by suitable bacteria) during sewage disposal is __________________?
0
The shift conversion reaction taking place during water gas manufacture is given by__________________?
A. H2
B. CH4
C. CO2
D. N2
0
_____________ of the coal is the basis for Seylor’s coal classification?
A. C + H2O ↔ CO + H2
B. C + 2H2O ↔ CO2 + 2H2
C. CO + H2O ↔ CO2 + H2
D. None of these
0
In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of__________________?
A. Proximate analysis
B. Ultimate analysis
C. Caking index
D. Calorific value
0
In flue gas analysis by Orsat’s apparatus, carbon monoxide is absorbed by__________________?
A. Transportation of coal
B. Drying of coal
C. Combustion of coal by supplying it around the burner
D. Preheating the primary air
0
Washing of coal decreases its_________________?
A. Cuprous chloride
B. Potassium hydroxide
C. Alkaline pyrogallol solution
D. None of these
0
To avoid fire by spontaneous combustion of coal due to its low temperature oxidation, it should be stored in___________________?
A. Caking index
B. Mineral matter content
C. Ash content
D. Both B. and C.
0
The gas which contributes maximum to the heating value of natural gas is __________________?
A. Shallow and small piles
B. Fine sizes without the presence of any lump
C. Closed space without any ventilation facility
D. Large heaps with small surface to volume ratio