The correct statements among the following are:
i. Saline hydrides produce \( \text{H}_2 \) gas when reacted with water.
ii. Presently ~77% of the industrial dihydrogen is produced from coal.
iii. Commercially marketed \( \text{H}_2 \text{O}_2 \) contains 3% \( \text{H}_2 \text{O}_2 \).
The correct statements among the following are:
i. Saline hydrides produce \( \text{H}_2 \) gas when reacted with water.
ii. Presently ~77% of the industrial dihydrogen is produced from coal.
iii. Commercially marketed \( \text{H}_2 \text{O}_2 \) contains 3% \( \text{H}_2 \text{O}_2 \).
Show Hint
- i, ii, iii
- i, iii only
- ii, iii only
- i, ii only
The Correct Option is B
Solution and Explanation
Step 1: Statement (i) is true because saline hydrides like NaH react with water to produce hydrogen gas (\( \text{H}_2 \)).
Step 2: Statement (ii) is false because most industrial hydrogen is produced from natural gas, not coal.
Step 3: Statement (iii) is true because commercially available \( \text{H}_2 \text{O}_2 \) typically contains 3% hydrogen peroxide. Thus, the correct answer is (B) i, iii only.
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