What type of chemical reaction takes place when:
(a) lime stone is heated.
(b) a magnesium ribbon is burnt in air.

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Solution

(a) When the limestone is heated, it undergoes decomposition reaction as:
$C a C O_{3} Δ \to C a O + C O_{2}$
(b) When magnesium ribbon is burnt in air it undergoes combination reaction with oxygen.
$2 M g + O_{2} \to 2 M g O$

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What type of chemical reaction takes place when:(a) lime stone is heated.(b) a magnesium ribbon is burnt in air.

(a) When the limestone is heated, it undergoes decomposition reaction as:CaCO3Δ→CaO+CO2(b) When magnesium ribbon is burnt in air it undergoes combination reaction with oxygen.2Mg+O2→2MgO

What type of chemical reaction takes place when:
(a) lime stone is heated.
(b) a magnesium ribbon is burnt in air.

(a) When the limestone is heated, it undergoes decomposition reaction as:
$C a C O_{3} Δ \to C a O + C O_{2}$
(b) When magnesium ribbon is burnt in air it undergoes combination reaction with oxygen.
$2 M g + O_{2} \to 2 M g O$