1.

Hydrogen1. BrassCheese from milk2. Sub-atomic particlesElectron, Proton3. metalloidsMixtureCompressiblerefrigerant4. Oxygen in air5. The boiling point of water is6. Gases are highly7. Liquid nitrogen8. Rocket fuel100 CSiliconDesirable changes9. Irreversible changes21%10. Ripening of fruit​

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ANSWER:

QUESTION is not CLEAR..what are U ASKING about?



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