Question

i need this mcqs answer

Answer 1

1 ans (b)
2 ans (a)
3 ans(b)

Answer 2

$\bold{1.}$ 2Mg(s) + O2(g) --> 2MgO(s) + energy
Magnesium burns in air to produce MgO.

$\bold{2.}$ It's a displacement reaction

$\bold{3.}$ H2 + Cl2 --> 2HCl

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