Mark the correct statement/s about $Z n O$ :

It is amphoteric in nature

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It is yellow when cold and white when hot

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When heated with cobaltous nitrate, it forms a green colored compound - zinc cobaltonitrate also known as Rinmann's green

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It is used as a catalyst along with

C r_{2} O_{3}

in the manufacturing of methyl alcohol from water gas

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Solution

The correct option is D It is used as a catalyst along with $C r_{2} O_{3}$ in the manufacturing of methyl alcohol from water gas
a) $Z n O$ is amphoteric in nature.
b) It is white when cold and yellow when hot.
c) Cobalt zincate $[C o (Z n O_{2})]$ is formed:
$2 Z n O + 2 C o (N O_{3})_{2} ⟶ 2 C o (Z n O_{2}) + 4 N O_{2} + O 2$
d) $Z n O$ is used as a catalyst along with $C r_{2} O_{3}$ in the manufracture of methyl alcohol from a mixture of carbon monoxide and hydrogen.

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Similar questions

Z n O

Which statement is correct about the following reaction?
$Z n O$ + $C O \to$ $Z n$ + $C O_{2}$

Which statement is correct about the following reaction?
ZnO + CO → Zn + $C O_{2}$

Z n O + C O \to Z n + C O_{2}

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