Magnesium gains weight on burning:

due to mass of nitrogen in the air

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due to mass of oxygen in the air

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due to mass of carbon dioxide in the air

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All of the above

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Solution

The correct option is B due to mass of oxygen in the air
Magnesium gains weight on burning as magnesium oxide is formed so oxygen is added to it.

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Similar questions

Find the mass ratio of carbon to oxygen in carbon dioxide?

C_{(s)} + O_{2 (g)} \to {C O}_{2 (g)} + H e a t + L i g h t

C = 12.0 u, O = 16.0 u

Which of the following statements indicates that law of multiple proportion is being followed ?

(a) Sample of carbon dioxide taken from any source will always have carbon and oxygen in the ratio 1 : 2

(b) Carbon forms two oxides namely $C O_{2}$ and CO, where masses of oxygen which combine with fixed mass of carbon are in the simple ratio 2 : 1

(c) When magnesium burns in oxygen, the amount of magnesium taken for the reactoin is equal to the amount of magnesium in magnesium oxide formed

(d) At constant temperature and pressure 200 mL of hydrogen will combine with 100 mL oxygen to produce 200 mL of water vapour

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