Fuel used for rocket propulsion is a mixture of A. hydrazine and hydrogen peroxide B. hydrazine and TNT C. hydroxyl amine and TNT D. hydroxyl amine and hydrogen peroxide

The correct answer is: D. hydroxyl amine and hydrogen peroxide.

Hydrazine and hydrogen peroxide are both monopropellants, meaning they can be used as a fuel without the need for an oxidizer. However, they are both highly toxic and corrosive, and they can be difficult to handle. Hydroxyl amine is a less toxic and less corrosive alternative to hydrazine, and it can be used as a fuel in combination with hydrogen peroxide to form a bipropellant. Bipropellants are more powerful than monopropellants, and they are easier to control.

The following is a brief explanation of each option:

• Option A: Hydrazine and hydrogen peroxide are both monopropellants, meaning they can be used as a fuel without the need for an oxidizer. However, they are both highly toxic and corrosive, and they can be difficult to handle.
• Option B: Hydrazine and TNT are both explosives, and they are not suitable for use as rocket fuel.
• Option C: Hydroxyl amine and TNT are both explosives, and they are not suitable for use as rocket fuel.
• Option D: Hydroxyl amine and hydrogen peroxide are both bipropellants, meaning they require an oxidizer to function. However, they are both less toxic and less corrosive than hydrazine and hydrogen peroxide, and they are easier to handle.