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प्रश्न
Write the chemical equation for the event.
A reaction was brought about between ferric oxide and aluminium.
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उत्तर
Aluminium is more reactive than iron. Aluminium metal replaces iron from ferric oxide to form aluminium oxide and iron
Chemical Equation: \[\ce{2Al + Fe2O3 -> Al2O3 + 2Fe}\]
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संबंधित प्रश्न
What do you observe when dilute sulphuric acid is added to granulated zinc?
What do you observe when a few pieces of iron are dropped in a blue solution of copper sulphate?
What do you observe when ferrous sulphate solution is added to an aqueous solution of sodium hydroxide.
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Aluminium came in contact with air.
Write a chemical equation for the event.
Iron filings are dropped in aqueous solution of copper sulphate.
Write chemical equation for the event.
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Write a chemical equation for the following event.
Zinc oxide is dissolved in dilute hydrochloric acid.
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A neutral oxide which does not react with an acid or a base to give salt and water.
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| More reactive | Moderately reactive | Less reactive |
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Give the steps involved in the extraction of metals of low and medium reactivity from their respective sulphide ores.
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Three metal samples of magnesium, aluminium and iron were taken and rubbed with sandpaper. These samples were then put separately in test tubes containing dilute hydrochloric acid. Thermometers were also suspended in each test tube so that their bulbs dipped in the acid. The rate of formation of bubbles was observed. The above activity was repeated with dilute nitric acid and the observations were recorded.
Answer the following questions:
(i) When the activity was done with dilute hydrochloric acid, then in which one of the test tubes was the rate of formation of bubbles the fastest and the thermometer showed the highest temperature?
(ii) Which metal did not react with dilute hydrochloric acid? Give reason.
(iii) Why is hydrogen gas not evolved when a metal reacts with dilute nitric acid? Name the ultimate products formed in the reaction.
OR
Name the type of reaction on the basis of which the reactivity of metals is decided. You have two metals X and Y. How would you decide which is more reactive than the other?
