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Q)

# $BeH_2$ and $MgH_2$ are prepared using the reagent

$(a)\;LiH\qquad(b)\;AlH_3\qquad(c)\;LiAlH_4\qquad(d)\;All$

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A)
$BeH_2$ and $MgH_2$ are prepared using the reagent $LiAlH_4$