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A mixture of H(2)O(2) and hydrzine with ...

A mixture of `H_(2)O_(2)` and hydrzine with copper (II) is used as a rocket propellant. Why ?

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The reaction between hydrazine `(NH_(2)NH_(2))andH_(2)O_(2)` in the presence of Cu(II) is highly exothermic and is accompanied by a large increase in energy as well as in volume of the products. Therefore, this mixture is used as a rocket propellant.
`2H_(2)O_(2)(I)+H_(2)NH_(2)(I)overset(Cu(II))toN_(2)(g)uarr+4H_(2)O(g)uarr`
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SUBHASH PUBLICATION-HYDROGEN-Two marks questions and answers
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  7. Why do lakes freeze from top towards bottom ?

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  9. Water cannot be used to extinguish petrol fires. Why ?

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  10. What is the volume strenth of H(2)O(2)?

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  11. Hard water is softened before using in boilers. Expain.

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  12. What are the uses of Heavy Water ?

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  13. Show the oxidising property of H(2)O(2) with PbS.

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  15. Explain property of H(2)O(2)"with"MnO(4)^(-) in acidic medium.

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  16. How does H(2)O(2) reduces iodine in reducing property ?

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  17. Describe the structure of common from of ice.

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  18. Distinguish clearly between (a) hard and soft water, (b) temporary har...

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  20. Sea water can't be used in boiler. Explain given chemical equations.

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