Which of the following combination will produce H 2 gas? (2018)
Chemistry · JEE Advanced · NTA Exams — d- and f-Block Elements
Which of the following combination will produce H2 gas? (2018)
- Fe metal and conc. \(\mathrm{HNO}_{3}\)
- Cu metal and conc. \(\mathrm{HNO}_{3}\)
- Au metal and NaCN (aq) in the presence of air
- Zn metal and NaOH (aq)
Answer
(D) Zn metal and NaOH (aq)
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