Q13 / 160 · AP EAMCET 2024 (19 May Shift 2) · Chemistry

The correct statements among the following are i. Saline hydrides produce $\mathrm{H}_2$ gas when reacted with water ii. Presently $\sim 77 \%$ of the industrial dihydrogen is produced from coal iii. Commercially marketed $\mathrm{H}_2 \mathrm{O}_2$ contains $3 \% \mathrm{H}_2 \mathrm{O}_2$

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

Solution

(i) Saline hydrides like NaH react violently with water to librate hydrogen gas. (ii) Presently $77 \%$ of the industrial dihydrogen is produced from petro-chemicals. (iii) Commercially marketed sample is 10 V which contains $3 \% \mathrm{H}_2 \mathrm{O}_2$

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

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