When washing soda is treated with hydrochloric acid, it gives off colourless gas with lot of effervescence, then that gas is

C O_{2}

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O_{2}

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C O

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C l_{2}

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Solution

The correct option is A $C O_{2}$
$N a_{2} C O_{3}$ + $2 H C l \to 2 N a C l + H_{2} O + C O_{2} ↑$ .
$C O_{2}$ is given out with brisk effervescence.

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When washing soda is treated with hydrochloric acid, it gives off colourless gas with lot of effervescence, then that gas is

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