Q29 / 160 · AP EAMCET 2020 (21 Sep Shift 2) · Chemistry

Which of the following mineral acids can attack \(\mathrm{SiO}_2\) ?

  • A
    Conc. \(\mathrm{HNO}_3\)
  • B
    \(\mathrm{H}_2 \mathrm{SO}_4\)
  • Correct answer
    C
    HF
  • D
    \(\mathrm{HCl}\)

Solution

Although hydrofluoric acid (HF) is a weak acid, it does attack silicates very effectively. For this reason, its primary laboratory use is to attack and dissolve silicate minerals. Hence, the correct option is (c).

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

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