Assertion: Aluminium and zinc metal evolve $H_{2}$ gas from $N a O H$ solution
Reason: Several non-metals such as $P, S, C l$ etc. yield a water and other compounds instead of $H_{2}$ gas from $N a O H$ .

Both Assertion and Reason are correct and the Reason is the correct explanation of Assertion

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Both Assertion and Reason are correct but the reason is not the correct explanation of Assertion

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The Assertion is correct but the Reason is incorrect

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The Assertion is incorrect but the Reason is correct

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Solution

The correct option is C Both Assertion and Reason are correct but the reason is not the correct explanation of Assertion
$Z n + 2 N a O H \to N a_{2} Z n O_{2} + H_{2}$
$2 A l + 2 N a O H + 2 H_{2} O \to 2 N a A l O_{2} + 3 H_{2}$
So Assertion (A) is correct.
$P_{4} + 3 N a O H + 3 H_{2} O \to 3 N a H_{2} P O_{2} + P H_{3}$
$4 S + 6 N a O H \to N a_{2} S_{2} O_{3} + 2 N a_{2} S + 3 H_{2} O$
$C l_{2} + 2 N a O H \to N a C l + N a C l O + H_{2} O$
This reaction of $C l_{2}$ is with cold and dilute $N a O H$ .
$3 C l_{2} + 6 N a O H \to 5 N a C l + N a C l O_{3} + 3 H_{2} O$
This reaction of $C l_{2}$ is with hot and conc. $N a O H$ .

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Assertion: Aluminium and zinc metal evolve H2 gas from NaOH solutionReason: Several non-metals such as P,S,Cl etc. yield a water and other compounds instead of H2 gas from NaOH.

Assertion: Aluminium and zinc metal evolve $H_{2}$ gas from $N a O H$ solution
Reason: Several non-metals such as $P, S, C l$ etc. yield a water and other compounds instead of $H_{2}$ gas from $N a O H$ .