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Question

Which of the following compounds does not evolve a colored gas on decomposition?

A
Mg(NO3)2
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B
LiNO3
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C
NaNO3
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D
Ca(NO3)2
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Solution

The correct option is C NaNO3
NaNO3ΔNaNO2+O2.
In other reactions NO2 is produced which is reddish-brown coloured gas.

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