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Fuels and Combustion

Fuels and Combustion
Pick the odd man out.

Pitch creosote mixture
Briquettes
Wood
Oil gas

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Fuels and Combustion
Octane number of 2, 2, 4 - trimethyl pen-tane is

100
More than 100
In between 0 and 100

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Fuels and Combustion
With increase in C/H ratio of a fuel, the amount of CO₂ formed on its complete combustion

Increases
Either A or B, depends on other factors
Decreases
Remains same

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Fuels and Combustion
The fuel ratio of a coal is

Neither A nor B
The ratio of its percentage of fixed carbon to that of volatile matter
Helpful in estimation of its rank
Both A and B

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Fuels and Combustion
Critical Air Blast (CAB) value of coke is a direct measure of its

Hardness
None of these
Reactivity
Strength

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Fuels and Combustion
Which of the following has the highest flame speed?

CO
CH₄
H₂
C₂H₆

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