Advertisements
Advertisements
प्रश्न
How will you obtain Magnesium oxide from magnesium.
Also give balanced equations for the reactions
उत्तर
Magnesium when burnt in air (oxygen) Magnesium oxide is formed
\[\ce{2Mg + O2->[heat] 2Mgo}\]
APPEARS IN
संबंधित प्रश्न
What do you observe when dilute sulphuric acid is added to granulated zinc?
What do you observe when Magnesium ribbon is burnt in oxygen.
What is meant by the metal reactivity series ? State its importance, (any two points).
Write chemical equation for the event.
Aluminium came in contact with air.
Write chemical equation for the event.
Electrolysis of alumina is done.
Write a chemical equation for the following event.
Zinc oxide is dissolved in dilute hydrochloric acid.
In preparation of Aqua regia hydrochloric acid and _______ acid are mixed.
Which among the following statements is incorrect for magnesium metal?
A solution of CuSO4 was kept in an iron pot. After few days the iron pot was found to have a number of holes in it. Explain the reason in terms of reactivity. Write the equation of the reaction involved.
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?
