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Fuels and Combustion

Fuels and Combustion
The calorific value is the highest out of the following for

Coke oven gas
Water gas
Producer gas
Blast furnace gas

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Fuels and Combustion
Mineral matter content (M) and ash content (A) in coal are approximately related as

M = 1.1A
M = 1.5A
M = A
M = 2A

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Fuels and Combustion
Ionisation potential applied across the electrodes of electrostatic tar precipitator is around

230 V AC
230 V DC
60 KV AC
60 KV DC

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Fuels and Combustion
High ash containing coke

None of these
Has poor strength and abrasion resistance
Is desirable in producer gas manufacture
Produces more slag when used in the blast furnace

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Fuels and Combustion
Shatter index of the coke is a measure of its

Strength
None of these
Bulk density
Reactivity

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Fuels and Combustion
Coke oven gas compared to blast furnace gas is

More explosive and inflammable
Less poisonous
All of these
Lighter

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