Chemistry - s Block Elements Question with Solution | TestHub

Chemistrys Block ElementsGeneralEasy2 minPYQ_2020

ChemistryEasysingle choice

Which of the following combination will produce $H_{2}$ gas?

Options:

Answer:

Solution:

$F e + c o n c . H N O_{3} \to P a s s i v i t y$

$C u + c o n c . H N O_{3} \to N O_{2}$

$A u + N a C N + O_{2} \to [A u (C N)_{2}]^{-}$

$Z n + N a O H \to N a_{2} Z n O_{2} + H_{2}$

Stream:NTA_ABHYASSubject:ChemistryTopic:s Block ElementsSubtopic:General

⏱ 2mℹ️ Source: PYQ_2020

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