AP EAMCET · Chemistry · Hydrogen
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
- B i, iii only
- C ii, iii only
- D i, ii only
Answer & Solution
Correct Answer
(B) i, iii only
Step-by-step Solution
Detailed explanation
(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 \(3 \% \mathrm{H}_2 \mathrm{O}_2\)
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