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Fuels and Combustion

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

More than 100
100
In between 0 and 100

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Fuels and Combustion
Which of the following gaseous fuels has the highest net calorific value (kcal/Nm³)?

Carburetted water gas
Liquified petroleum gas
Producer gas
Natural gas

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Fuels and Combustion
Gobar gas constitutes mainly of

CH₄ & N₂
CO & CO₂
CO & N₂
CH₄ & CO₂

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Fuels and Combustion
Flue gas discharge velocity through chimney of a big thermal power plant may be around __________ m/sec.

0.5
50
500
10

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Fuels and Combustion
__________ prohibits the use of alcohols directly in petrol engines.

Low calorific value
Low octane number
High cost & availability
Low flash point

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Fuels and Combustion
Which is the heaviest fuel gas out of the following?

Coke oven gas
Carburetted water gas
Blast furnace gas
Water gas

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