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Atomic mass of oxygen-...

Atomic mass of oxygen-

A

8U

B

23U

C

27U

D

16U

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BEYOND PUBLICATION-CHEMICAL EQUATIONS-EXERCISE
  1. In the chemical reaction Fe2O3+2AI overset(Delta) to 2Fe+ AI2O3 the sy...

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  2. Identify the exothermic reaction among the following-

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  3. Atomic mass of oxygen-

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  4. Chemical reaction occurs with the ------------- of chemical bonds-

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  5. The metal formed when zinc react with AgNO3 is-

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  6. The substances that are present on left side of a chemical equation ar...

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  7. The formula of hypochlorous acid is-

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  8. Every gas at STP occupies 22.4 litres and it is known as.

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  9. Burning of petroleum gas (LPG) ------- change.

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  10. Identify the balance equations among.

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  11. In exothermic reaction heat energy is-

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  12. The process of preparing slaked lime by adding water to quicklime is t...

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  13. Zn+2HCl rarr ZnCl(2)+H(2) is an example for ……………….

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  14. The correct observation made by the student after putting clean pieces...

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  15. Burning of magnesium crackers is a reaction of …………….

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  16. If the gas liberated in an experiment allows the burning splinter to c...

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  17. Why should we write the arrow tat pointing towards products while ?

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  18. What should we do, if two or more reactants are there writing a chemic...

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  19. Why should we balance a chemical equation?

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  20. What is a chemical equation?

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