Which one of the following pairs of substances will not produce hydrogen when reacted together?

Copper and conc. nitric acid

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Ethanol and metallic sodium

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Magnesium and steam

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Phenol and metallic sodium

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Copper and conc. nitric acid
$C u + 4 H N O_{3} (c o n c .) \to C u (N O_{3})_{2} + 2 N O_{2} + 2 H_{2} O$
$C_{2} H_{5} O H + N a \to C_{2} H_{5} O^{⊖} N a^{+} + 1 / 2 H_{2}$
$M g + H_{2} O (steam) \to M g O + H_{2}$
$C_{6} H_{5} O H + N a \to C_{6} H_{5} O^{⊖} N a^{+} + 1 / 2 H_{2}$

Suggest Corrections

Similar questions

H_{2}

Join BYJU'S Learning Program