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JEE Advance 2017
Paper-2
Question
Which of the following combination will produce $\mathrm{H}_2$ gas ?
Select the correct option:
A
Cu metal and conc. $\mathrm{HNO}_3$
B
Zn metal and $\mathrm{NaOH}(\mathrm{aq})$
C
Au metal and $\mathrm{NaCNI}(\mathrm{aq})$ in the presence of air
D
Fe metal and conc. $\mathrm{HNO}_3$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
$\mathrm{Zn}+2 \mathrm{NaOH} \longrightarrow \mathrm{Na}_2 \mathrm{ZnO}_2+\mathrm{H}_2$
Question Tags
JEE Advance
Physics
Easy
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