(B) The reaction of calcium metal with water is: $Ca + 2H_2O \longrightarrow Ca(OH)_2 + H_2(g)$.The reaction of calcium hydride with water is: $CaH_2

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$i$. $Ca \xrightarrow{H_2 O}$ Products; $ii$. $CaH_2 \xrightarrow{H_2 O}$ Products

(B) The reaction of calcium metal with water is: $Ca + 2H_2O \longrightarrow Ca(OH)_2 + H_2(g)$.The reaction of calcium hydride with water is: $CaH_2 + 2H_2O \longrightarrow Ca(OH)_2 + 2H_2(g)$.Both reactions produce $H_2$ gas as a product upon hydrolysis.

Class 11 Chemistry Hydrogen Hydrogen

Medium

Which of the following pairs of reactions give $H_2$ gas as a product upon hydrolysis?

AP EAMCET 2021 All AP EAMCET

A
$i$. $Ba \xrightarrow{H_2 O}$ Products; $ii$. $BaO_2 \xrightarrow{H_2 O}$ Products
B
$i$. $Ca \xrightarrow{H_2 O}$ Products; $ii$. $CaH_2 \xrightarrow{H_2 O}$ Products
C
$i$. $K \xrightarrow{H_2 O}$ Products; $ii$. $K_2 O \xrightarrow{H_2 O}$ Products
D
$i$. $Na \xrightarrow{H_2 O}$ Products; $ii$. $Na_2 O_2 \xrightarrow{H_2 O}$ Products