The fuel used as aviation fuel in jet aircrafts is a special grade of _________ .

diesel

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kerosene

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petrol

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none of these

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Solution

The correct option is B kerosene
One of the primary reasons why jets rely on kerosene is due to its low freezing point. Aviation kerosene has a freezing point of -47 °C
Planes fly at extremely high altitudes, which means they spend a lot of airtime in sub-zero temperatures. As a result, planes need to use fuel with a low freezing point – like kerosene - so the fuel functions properly without solidifying during the flight.

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(b) What is the physical state of (i) W, and (ii) X ?

(d) Name the product Z.

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