A shiny brown coloured element $X$ on heating in the air becomes black in colour to form compound $Y$ . Name the element $X$ , the black coloured compound $Y$ and identify the type of the reaction.

X:- Sodium

Y:- Sodium Oxide

Type of reaction:- Combination reaction

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X:- Copper

Y:- Copper dioxide

Type of reaction:- Combination reaction

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X:- Copper

Y:- Copper oxide

Type of reaction:- Combination reaction

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X:- Sodium

Y:- Sodium Dioxide

Type of reaction:- Combination reaction

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Solution

The correct option is C
X:- Copper

Y:- Copper oxide

Type of reaction:- Combination reaction

Shiny brown element $X$ is copper which heated in the presence of oxygen to form black coloured compound $Y$ which is $C u O$ .

$C u (s) + O_{2} (g) \to 2 C u O (s)$

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A shiny brown-colored element ‘X’ on heating in air becomes black in colour. Name the element ‘X’ and the black coloured compound formed.

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A shiny brown coloured element X on heating in the air becomes black in colour to form compound Y. Name the element X, the black coloured compound Y and identify the type of the reaction.

The correct option is C X:- Copper Y:- Copper oxide Type of reaction:- Combination reaction Shiny brown element X is copper which heated in the presence of oxygen to form black coloured compound Y which is CuO. Cu(s) + O2(g) → 2CuO(s)

A shiny brown coloured element $X$ on heating in the air becomes black in colour to form compound $Y$ . Name the element $X$ , the black coloured compound $Y$ and identify the type of the reaction.

The correct option is C
X:- Copper

Y:- Copper oxide

Type of reaction:- Combination reaction

Shiny brown element $X$ is copper which heated in the presence of oxygen to form black coloured compound $Y$ which is $C u O$ .

$C u (s) + O_{2} (g) \to 2 C u O (s)$