MCQ
find out the reactivity order with $LiAlH_4$


- A$A > B > C > D$
- ✓$B > C > D > A$
- C$D > C > B > A$
- D$B > D > C > A$

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$C ( s )+\frac{1}{2} O _{2}( g ) \rightarrow CO ( g )+100 \;kJ$
When coal of purity $60 \%$ is allowed to burn in presence of insufficient oxygen, $60 \%$ of carbon is converted into $'CO'$ and the remaining is converted into $'CO _{2}$$'$.
The heat generated when $0.6 \;kg$ of coal is burnt is
