Q is a mixture of two compounds of Group 2 elements.
Q undergoes thermal decomposition to produce a white solid and only two gaseous products. One of the gaseous products relights a glowing splint.
What could be the components of mixture Q?
1 )
MgCl$_2$ and CaCO$_3$
2 )
MgCO$_3$ and Ca(NO$_3$)$_2$
Mg(NO$_3$)$_2$ and Ca(NO$_3$)$_2$
4 )
MgO and CaO
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