What is the reason for adding glycerol to aviation fuel?
- AIt prevents the freezing of fuel.
- BIt minimizes the spoilage of fuel.
- CIt increases the fuel efficiency.
- DIt prevents the engine from overheating.
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Which of the following acts as a rocket propellant?
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View SolutionSolid fuel used in rockets is a mixture of $Fe_2O_3$ and $Al$ (in ratio $1:2$ by moles). The heat evolved $(kJ)$ per gram of the mixture is $............$. (Nearest integer)
Given: $\Delta H_{f}^{\ominus}(Al_2O_3) = -1700 \ kJ \ mol^{-1}$
$\Delta H_{f}^{\ominus}(Fe_2O_3) = -840 \ kJ \ mol^{-1}$
Molar mass of $Fe$,$Al$ and $O$ are $56$,$27$ and $16 \ g \ mol^{-1}$ respectively.
Given: $\Delta H_{f}^{\ominus}(Al_2O_3) = -1700 \ kJ \ mol^{-1}$
$\Delta H_{f}^{\ominus}(Fe_2O_3) = -840 \ kJ \ mol^{-1}$
Molar mass of $Fe$,$Al$ and $O$ are $56$,$27$ and $16 \ g \ mol^{-1}$ respectively.
$A$ combination of nitrocellulose and nitroglycerine is a propellant of the type
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View SolutionWhat were lead compounds used for?
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