$2$ g of $A l$ is treated separately with an excess of dil. $H_{2} S O_{4}$ and excess of $N a O H$ . The ratio of the volume of hydrogen evolved is :
$2 : 3$
$1 : 1$
$2 : 1$
$1 : 2$

2 : 3

1 : 2

1 : 1

2 : 1

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