Related Questions

Moisture contained by a substance in excess of the equilibrium moisture is called the __________ moisture.
A Unbound
B Free
C Critical
D Bound
Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the __________ moisture.
A Free
B Unbound
C Equilibrium
D Bound
Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the __________ moisture.
A Bound
B Unbound
C Critical
D None of these
Moisture in a solid exerting an equilibrium vapour pressure equal to that of the pure liquid at the same temperature is called the __________ moisture.
A Unbound
B Critical
C Free
D Bound
With increase in moisture content of coal, its
A Calorific value increases
B Caking properties diminish
C Swelling during carbonisation becomes excessive
D None of these
Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.
A 1000
B 4000
C 6000
D 8000
Ash content in the middling coal (a byproduct of coal washeries) in India ranges between __________ percent.
A 15 to 25
B 35 to 45
C 55 to 75
D 75
Fusion point of coal ash increases with increase in its __________ content.
A Iron sulphate
B Iron silicate
C Lime and magnesia
D All of the above
During drying of a solid, the critical moisture content increases with
A Decreased drying rate
B Increased thickness of the solid
C Increased drying rate
D Both B and C
Mineral matter content (M) and ash content (A) in coal are approximately related as
A M = 1.1A
B M = A
C M = 1.5A
D M = 2A

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