Q13 / 160 · TS EAMCET 2023 (13 May Shift 1) · Chemistry

Kernite and cryolite are the minerals of two elements X and $\mathrm{Z}$. Respectively $\mathrm{X}$ and $\mathrm{Z}$ are

  • A
    $\mathrm{B}, \mathrm{Ga}$
  • Correct answer
    B
    $\mathrm{B}, \mathrm{Al}$
  • C
    $\mathrm{Al}$, In
  • D
    $\mathrm{B}, \mathrm{Tl}$

Solution

Kernite $=\mathrm{Na}_2 \mathrm{~B}_4 \mathrm{O}_6(\mathrm{OH})_2 \cdot 3 \mathrm{H}_2 \mathrm{O}$ Cryolite $=\mathrm{Na}_3 \mathrm{AlF}_6$

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

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