NDA General Science Chemistry Questions Part 1

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Question : 87 of 100
 
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Which of the following statements about hydrogen is/are correct?
1. Hydrogen has three isotopes of which protium is the most common.
2. Hydrogen ion (H+) exists freely in solution.
3. Dihydrogen, H2, acts as a reducing agent.
Select the correct answer using the code given below.
[NDA I 2014]
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