MCQ
Which of the following possesses highest melting point
- AChlorobenzene
- B$o-$dichlorobenzene
- C$m-$dichlorobenzene
- ✓$p-$dichlorobenzene
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$(A)$ 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 $CO$.