Hydrogen peroxide is used as a rocket propellant because it:
A. Is extremely stable
B. Is a fuel
C. Decomposes to release oxygen and steam, providing thrust
D. Burns in air
Answer: Option C
Solution (By JKExamLibrary)
High-concentration H₂O₂ (e.g., 80-90%) decomposes rapidly in the presence of a catalyst to produce superheated steam and oxygen: 2H₂O₂ → 2H₂O + O₂ + heat. This generates high-pressure gas used for propulsion (monopropellant) or as oxidizer in bipropellant systems. It is not a fuel; it provides oxygen for combustion. It must be handled carefully due to instability.
Explanation:
Lysozyme is an antibacterial enzyme found in tears, saliva, and egg white. It breaks down bacterial cell walls. Lipase digests fats, trypsin and pepsin digest proteins. Lysozyme is part of the innate immune system.
Explanation:
Urea (NH₂CONH₂) contains about 46% N. Ammonium sulfate ~21% N, sodium nitrate ~16% N, DAP ~18% N (and 46% P₂O₅). Urea is the most concentrated solid nitrogen fertilizer.
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