Question

give answer with complete explaination

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Answer 1

ans is d

Mg+ O2 = MgO

this is to learn that MgO is basic and white

chem has no reasoning Its just ratta

I have understood this now after so much stupidity trying to find reasons. Don't try.

and really sorry to people who love chem.

Answer 2

1. ye black acidic burn
2. colour aur nature basic me aate hai par magnesium acid me aata hai par pata nahi black ya white par pata nahi sahi hai ya galat agar wrong hoga to sorry