The fuel used to produce electrical energy in the space rocket Saturn V, used by Neil Armstrong to reach the moon was:

C O + O_{2}

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F_{2} + O_{2}

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C H_{4} + O_{2}

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liquid

H_{2} + O_{2}

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Solution

The correct option is B liquid $H_{2} + O_{2}$
The fuel used was a liquid mixture of $H_{2}$ and $O_{2}$ .
It was used for the following reasons:
1. $H_{2}$ is a highly efficient fuel, as it has the highest calorific value.
2. Mixing $O_{2}$ was required to support the combustion reaction: $2 H_{2} + O_{2} \to 2 H_{2} O$ .
3. Further, the water produced at the end of the combustion reaction provided a good source of pure drinking water for the astronauts.

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Q. In a fuel cell

H_{2}

and

O_{2}

react to produce electricity. In the process

H_{2}

gas is oxidized at anode and

O_{2}

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In a fuel cell, H2& O2 react to produce electricity. In the process, H2 gas is oxidized at the anode & O2 at the cathode . If 67.2 litre of H2 at STP react in 15 minutes, If the entire current is used for electrode deposition of Cu from Cu (II) solution, how many grams of Cu will be deposited?

A fuel cell is:

I.A voltaic cell in which continuous supply of fuels are sent at anode to perform oxidation.

II. A voltaic cell in which fuels such as :

$C H_{4}, H_{2}$ and CO are used up at anode.

III. One which involves the reaction of $H_{2} O_{2}$ fuel cell such as:

Anode : $2 H_{2} + 4 ⊖ O H \to 4 H_{2} O (l) + 4 e^{-}$