In which of the following reactions is hydrog | vedclass

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(B) Let us analyze each reaction:$1$. Reaction of fused $NaOH$ with $C$: $2NaOH + C \rightarrow Na_2CO_3 + H_2$. Hydrogen is liberated.$2$. Reaction o

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Reaction of $NaOH$ with sulphur

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(B) Let us analyze each reaction:$1$. Reaction of fused $NaOH$ with $C$: $2NaOH + C \rightarrow Na_2CO_3 + H_2$. Hydrogen is liberated.$2$. Reaction of $NaOH$ with sulphur: $6NaOH + 3S \rightarrow 2Na_2S + Na_2SO_3 + 3H_2O$. No hydrogen gas is liberated.$3$. Heating concentrated $NaOH$ with $Si$: $Si + 2NaOH + H_2O \rightarrow Na_2SiO_3 + 2H_2$. Hydrogen is liberated.$4$. Reaction of zinc with $NaOH$: $Zn + 2NaOH \rightarrow Na_2ZnO_2 + H_2$. Hydrogen is liberated.Therefore, the correct option is $B$.

List-$I$ (Metal)	List-$II$ (Emitted light wavelength $(nm)$)
$A. Li$	$I. 670.8$
$B. Na$	$II. 589.2$
$C. Rb$	$III. 780.0$
$D. Cs$	$IV. 455.5$

In which of the following reactions is hydrogen gas not liberated?

Similar Questions

What is produced when $Mg$ burns in $CO_2$?

Assertion $(A)$: $K$, $Rb$, and $Cs$ form superoxides.
Reason $(R)$: The stability of the superoxides increases from $K$ to $Cs$ due to the decrease in lattice energy.
The correct answer is:

Which metal does not react with cold water but evolves $H_2$ gas when reacted with steam?

Match the List-$I$ with List-$II$.

List-$I$ (Metal) List-$II$ (Emitted light wavelength $(nm)$)

$A. Li$ $I. 670.8$

$B. Na$ $II. 589.2$

$C. Rb$ $III. 780.0$

$D. Cs$ $IV. 455.5$

Choose the most appropriate answer from the options given below:

Consider the following reactions:
$Cs + O_2 \text{ (excess)} \rightarrow X$
$Na + O_2 \rightarrow Y$
Identify the correct statement about $X$ and $Y$.

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