MCQ
"The properties of the elements are periodic function of their atomic numbers." The statement was given by :-
- AN. Bohr
- BJ.W. Dobereiner
- CD.I. Mendeleev
- ✓H.G.J. Moseley
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$C$ will be

Reason : The higher oxidation states for the group $14$ elements are more stable for the heavier members of the group due to ‘inert pair effect’.
$(A)$ Limestone is used to remove silicate impurity.
$(B)$ Pig iron obtained from blast furnace contains about $4 \%$ carbon.
$(C)$ Coke $(C)$ converts $CO _2$ to $CO$.
$(D)$ Exhaust gases consist of $NO _2$ and $CO$.
Reason : $Si-O-Si$ linkages are moisture sensitive.