In which of the following reactions is hydrog | vedclass

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(C) $(i)$ $2NaBH_4 + I_2 \longrightarrow B_2H_6 + 2NaI + H_2$$(ii)$ $2BF_3 + 6NaH \xrightarrow{450 \ K} B_2H_6 + 6NaF$$(iii)$ $4BF_3 + 3LiAlH_4 \longr

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$i, iv$

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(C) $(i)$ $2NaBH_4 + I_2 \longrightarrow B_2H_6 + 2NaI + H_2$$(ii)$ $2BF_3 + 6NaH \xrightarrow{450 \ K} B_2H_6 + 6NaF$$(iii)$ $4BF_3 + 3LiAlH_4 \longrightarrow 2B_2H_6 + 3LiF + 3AlF_3$$(iv)$ $3B_2H_6 + 6NH_3 \xrightarrow{	ext{heat}} 2B_3N_3H_6 + 12H_2$In reaction $(i)$,$H_2$ is produced as a byproduct.In reaction $(iv)$,$H_2$ is produced as a byproduct.Therefore,in reactions $(i)$ and $(iv)$,hydrogen is one of the products.

In which of the following reactions is hydrogen one of the products?
$i$. $2NaBH_4 + I_2 \longrightarrow$
$ii$. $2BF_3 + 6NaH \xrightarrow{450 \ K}$
$iii$. $4BF_3 + 3LiAlH_4 \longrightarrow$
$iv$. $3B_2H_6 + 6NH_3 \xrightarrow{\text{heat}} 2B_3N_3H_6 + 12H_2$

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In which of the following reactions is hydrogen one of the products?$i$. $2NaBH_4 + I_2 \longrightarrow$$ii$. $2BF_3 + 6NaH \xrightarrow{450 \ K}$$iii$. $4BF_3 + 3LiAlH_4 \longrightarrow$$iv$. $3B_2H_6 + 6NH_3 \xrightarrow{\text{heat}} 2B_3N_3H_6 + 12H_2$