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The correct observation made by the stud...

The correct observation made by the student after putting clean pieces of Iron in the test-tube containing Zine sulphate phate are as shown in the figure.

A

solution becomes colourless and Zinc gets deposited or Iron.

B

solution becomes green and Zinc gets deposited on Iron.

C

iron pieces get dissolved in the solution making it green.

D

no reaction is observed.

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The organ of a person has been damaged completely due to a poisonous waste material B has started accumulation in his blood making it dirty In order to save this persons life the blood from an artery in the person s arm is made to flow Into Iong tubes made of substance E which are kept in coiled form in a tank containing solution F This solution contains three materials G , H and I in similar proportions to those in normal blood . As the person 's blood passes through long tubes of substance E, most of the wastes present in it go into solution . The clean blood is then put back into a I In the person for circulation. What are (i) E, and (II) F

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BEYOND PUBLICATION-CHEMICAL EQUATIONS-EXERCISE
  1. The process of preparing slaked lime by adding water to quicklime is t...

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

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

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

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

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

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

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  8. Why should we balance a chemical equation?

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  9. What is a chemical equation?

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

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

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

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

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

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

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  16. X - Y leftarrow Z. Raja wrote a chemical equation like so ? What are t...

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  17. Zn + HCl rarr ZnCl2 + H2.Is it a balanced equation ? Give the reason.

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  18. Rupa says "xx+ y rarr xxy +Q indicates an endothermic reaction". Can y...

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  19. 4 Agcl rarr 4 Ag + 2 Cl2. Is it a balanced equation ? Yet it is not in...

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  20. An arrow pointing downwards in a chemical reaction shows……

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