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FUELS AND COMBUSTION

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
During coking of coal, the ash content (percentage)

Increases
None of these
Decreases
Remains constant

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Fuels and Combustion
Abel apparatus is used for those oils, whose flash points are___°F.

>120
300-600
>280

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Fuels and Combustion
__________ is used as jet engine fuel.

Petrol
Kerosene
Diesel
LPG

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Fuels and Combustion
Gas yield in the Kopper-Totzek coal gasifier is about __________ Nm³/ton coal (ash = 35%).

150
5000
3500
1500

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