Related Questions

Proximate analysis of coal determines its __________ content.
A moisture, ash, sulphur & volatile matter
B moisture, volatile matter, ash & fixed carbon
C moisture, sulphur, nitrogen & fixed carbon
D none of the mentioned
The popular notion that a tree's age can be determined by counting number of internal rings in its trunk is generally true. Howeevr, to help regulate the internal temperature of the tree, the outermost layers of wood of the Brazilian ash often →peel away when the temperature exceeds 95 degrees Fahrenheit, leaving the tree with fewer rings than it would otherwise have. So only if the temperature in the Brazilian ash's environment never exceeds 95 degrees Fahrenheit →elav eing the tree with fewer rings than it would otherwise have. So only if the reliable measure of the tree's age. Which of the following is an assumption on whish the argument above depends?
A The growth of new rings in a trees is not a function of levels of precipitation.
B Only the Brazilaian ash loses rings because of excessive heat.
C One day of temperatures above 95 degrees Fahrenheit will cause the Brazilian ash to lose one ring.
D The internal rings of all tress are of uniform thickness
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
Softening temperature of coal ash is a measure of the __________ of coal.
A Caking tendency
B Coking tendency
C Clinkering tendency
D Size stability
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
The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always
A 1
B > 1
C Unpredictable
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
Proximate analysis of fuel is determination of percentage of
A Carbon, hydrogen, nitrogen, sulphur, moisture
B Fixed carbon, ash, volatile matter, moisture
C Higher calorific value
D Lower calorific value
Which of the following substance will have same percentage in both proximate and ultimate analysis?
A Ash
B Volatile matter
C Moisture
D Hydrogen
The proximate analysis of fuel lists
A Various chemical constituents, carbon, hydrogen, oxygen etc, plus ash as percents by volume
B Various chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as percents by weight
C Fuel constituents as percents by volume of moisture, volatile, fixed carbon and ash
D Fuel constituents as percents by weight of moisture, volatile, fixed carbon and ash

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