Question

Ev) When magnesium ribbon is burnt in air
and the ash is collected in a china dish.
It contains-
(a) Magnesium nitride only
(b) Magnesium oxide only
(e) Magnesium oxide and magnesium carbide
(d) both magnesium oxide and magnesium
nitride.
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Answer 1

Answer:

hello mate....

Explanation:

when magnesium ribbon is burnt in air ,then magnesium oxide is produced as ash

Answer 2

The burning of magnesium turns it into magnesium oxide MgO (ash) due to reaction with oxygen in air

Dissolving MgO in water produces magnesium hydroxide

MgO +H2O =Mg(OH)2

Mg(OH)2 magnesium hydroxide is basic in nature i.e it is base which turns red litmus blue and blue phenolphthalein pink