Q30 / 160 · AP EAMCET 2023 (15 May Shift 2) · Chemistry

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

  • A
    i, ii, iii
  • B
    ii, iii only
  • Correct answer
    C
    i, ii only
  • D
    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.

Hence, the correct answer is option: 'C'.

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