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प्रश्न
What do you observe when Magnesium ribbon is burnt in oxygen.
While burning a magnesium ribbon in air, state two observations of this activity.
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उत्तर १
Magnesium ribbon burns with a dazzling white light and produces a white powder, which is magnesium oxide.
Reaction can be represented as:
\[\ce{2Mg + O2 -> \underset{(white powder)}{2MgO}}\]
उत्तर २
- Magnesium produces a dazzling white flame while burning.
- When magnesium burns, it reacts with oxygen to form a white, powdered material.
Notes
Students should refer to the answer according to their questions.
संबंधित प्रश्न
Divide the metals Cu, Zn, Ca, Mg, Fe, Na, Li into three groups, namely reactive metals, moderately reactive metals and less reactive metals.
With reference to Acid explain with a suitable example of how the reactivity of the metals could be differentiated.
Select the correct answer for the statement given below:
The catalyst used in the catalytic reaction involving the reactants nitrogen and hydrogen.
In preparation of Aqua regia hydrochloric acid and _______ acid are mixed.
Classify the following metals based on their reactivity.
Cu, Zn, Ca, Mg, Fe, Na, Li, Hg
| More reactive | Moderately reactive | Less reactive |
Explain the following reaction with the balanced equation.
Sulphur burns in air
Which of the following is the correct arrangement of the given metals in ascending order of their reactivity?
Zinc, Iron, Magnesium, Sodium
A metal A, which is used in thermite process, when heated with oxygen gives an oxide B, which is amphoteric in nature. Identify A and B. Write down the reactions of oxide B with HCl and NaOH.
An element A burns with golden flame in air. It reacts with another element B, atomic number 17 to give a product C. An aqueous solution of product C on electrolysis gives a compound D and liberates hydrogen. Identify A, B, C and D. Also write down the equations for the reactions involved.
Arrange the following as per the instruction given in the bracket:
Al, K, Mg, Ca (decreasing order of its reactivity)
