Identify the correctly matched pairs i. $\quad \mathrm{TiO}$ - pigment industry ii. $\mathrm{MnO}_2$ - dry…

Identify the correctly matched pairs i. $\quad \mathrm{TiO}$ - pigment industry ii. $\mathrm{MnO}_2$ - dry battery cells iii. $\mathrm{Cu} / \mathrm{Ni}$ alloy - UK 'copper' coins
  1. i, ii, iii
  2. ii, iii only
  3. i, ii only
  4. i, iii only

Solution

$\mathrm{TiO}$ is a white pigment used in coating industries. $\mathrm{MnO}_2$ is used in dry battery cells as it possesses good energy. The traditional UK copper coins are mainly made of $\mathrm{Cu}$, $\mathrm{Zn}$ and $\mathrm{Sn}$. Thus, Statement (iii) is incorrect.

Asked in: AP EAMCET 2023 (15 May Shift 2)

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