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Question

Oxygen gas is not produced from the following decomposition reaction :

A
$$Ag_2C_2O_4 \xrightarrow{\Delta}$$
B
$$Pb(NO_3)_2 \xrightarrow{\Delta}$$
C
$$K_2Cr_2O_7 \xrightarrow{\Delta}$$
D
$$Ag_2CO_3 \xrightarrow{\Delta}$$
Solution
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Correct option is B. $$Ag_2C_2O_4 \xrightarrow{\Delta}$$
Thermal decomposition of silver oxalate gives metallic silver and $$CO_2$$ gas.
The reaction is as follows:

$$Ag_2C_2O_4\xrightarrow{\Delta} 2Ag(s)+2CO_2(g)$$

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