Q14 / 160 · AP EAMCET 2022 (05 Jul Shift 2) · Chemistry

Identify the correct statements from the following: (I) The formula of Calgon in $\mathrm{Na}_6\left(\mathrm{PO}_3\right)_6$. (II) Exhausted permutit is regenerated by aqueous $\mathrm{KCl}$ solution. (III) Calcium stearate is soluble in water. (IV) In ice crystals, each oxygen is surrounded by four oxygen atoms.

  • A
    III \& IV only
  • B
    I \& IV only
  • Correct answer
    C
    I \& III only
  • D
    II \& III only

Solution

Exhausted permute is is regenerated by $10 \% \mathrm{NaCl}$ solution known as Brine water. Calcium stearate is an organic calcium salt of octadexanoate. Each oxygen atom in ice crystal is surrounded by 4 ' $\mathrm{H}$ ' atoms.

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

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