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Reactivity Trends (Group 2)

Silica reacts...

Question

Silica reacts with magnesium to form a magnesium compound $X$ . $X$ reacts with dilute $H C l$ and forms $Y$ .
$Y$ is :

A

M g O

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B

M g S i O_{3}

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C

S i C l_{4}

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D

M g C l_{2}

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Solution

The correct option is A $M g C l_{2}$
As per the given question reactions are:

$S i O_{2} + 2 M g \to 2 M g O + S i$
silica $X$

Again,

$M g O + 2 H C l \to M g C l_{2} + H_{2} O$
$X$ $Y$

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