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Burning of petroleum gas (LPG) ------- c...

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

A

physical

B

chemical

C

both A and B

D

neither physical nor chemical

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BEYOND PUBLICATION-CHEMICAL EQUATIONS-EXERCISE
  1. The formula of hypochlorous acid is-

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

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

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  4. Identify the balance equations among.

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  5. In exothermic reaction heat energy is-

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

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

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

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

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

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

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

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  13. Why should we balance a chemical equation?

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  14. What is a chemical equation?

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  15. By a balanced chemical equation, what do we know about atoms ?

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  16. How many steps are there in balancing the equation ?

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  17. Is there any imp0rtance of molecular formulae in writing the equation ...

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  18. How do the co-efficients of the substances would be, while balancing t...

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  19. Can we change the ratio of atoms in the molecules of the substances wh...

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  20. Sitara told that a chemical reaction occurs in ripening of grapes. Is ...

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