Q17 / 160 · AP EAMCET 2024 (19 May Shift 2) · Chemistry

Two statements are given below. Statement-I: In dry cleaning, the solvent $\mathrm{Cl}_2 \mathrm{C}=\mathrm{CCl}_2$ was earlier used and now it is replaced by liquified $\mathrm{CO}_2$ Statement-II: In bleaching of paper, $\mathrm{H}_2 \mathrm{O}_2$ was used earlier and now it is replaced by chlorine gas Correct answer is

  • A
    Statements I, II both are correct
  • B
    Statements I, II both are incorrect
  • Correct answer
    C
    Statement I is correct but statement II is incorrect
  • D
    Statement I is incorrect but statement II is correct

Solution

(I) Tetrachloroethene $\left(\mathrm{Cl}_2 \mathrm{C}=\mathrm{CCl}_2\right)$ was earlier used as solvent for dry cleaning. The compound contaminates the ground water and is also a suspected carcinogen. Now it is replaced by liquid $\mathrm{CO}_2$ which result in less harm to ground water. (II) $\mathrm{H}_2 \mathrm{O}_2$ is used for purpose of bleaching clothes in the process of laundry, which gives better result and makes use of lesser amount of water.

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

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