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State one observation: A zinc granule is...

State one observation: A zinc granule is added to copper sulphate solution.

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A red metal starts precipitating and the blue colour of the copper sulphate solution fades due to the formation of colourless zinc sulphate .
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State one observation for the following : A zinc granule is added to copper sulphate solution.

Write your observations when ammonia water is added to copper sulphate solution first a little then in excess. Give balanced equations.

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ICSE-SAMPLE QUESTION PAPER 5-Section II
  1. The following table shows the tests a student performed on four differ...

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  2. Name a metal which is found abundantly in the earth's crust.

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  3. State one observation: A zinc granule is added to copper sulphate solu...

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  4. Give reasons why copper is used to make hot water tanks and not steel ...

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  5. Write the name and formula of an ore of aluminium.

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  6. Write the constituents of electrolyte for the extraction of aluminium.

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  7. Which of the following oxides can act as a reducing agent?

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  8. Why is carbon tetrachloride, which is a liquid and non-electrolyte ?

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  9. Why should the temperature of the reaction mixture of nitric acid not ...

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  10. Ammonia not collected over water. Explain

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  11. In the manufacture of sulphuric acid by contact process give the equat...

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  13. Write balanced chemical equation for the following: NH4 Cl + H2 SO4...

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