MCQ
For which reaction from the following, $\Delta S$ will be maximum
- A$Ca(s) + \frac{1}{2}{O_2}(g) \to CaO(s)$
- ✓$CaC{O_3}(s) \to CaO(s) + C{O_2}(g)$
- C$C(s) + {O_2}(g) \to C{O_2}(g)$
- D${N_2}(g) + {O_2}(g) \to 2NO(g)$
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$(I) \,C{H_3}CH = C{H_2} + HBr\xrightarrow{{peroxide}}$
$(II)\, C{H_3}CH = C{H_2} + HBr\xrightarrow{{CC{l_4}}}$
$(III)\, C{H_3}C{H_2}C{H_3} + B{r_2}\xrightarrow{{hv}}$
$(IV)\,C{H_3}CH = C{H_2} + B{r_2}\xrightarrow{{CC{l_4}}}$

| (a) Pure nitrogen | (i) Chlorine |
| (b) Haber process | (ii) Sulphuric acid |
| (c) Contact process | (iii) Ammonia |
| (d) Deacon's process | (iv) Sodium azide or Barium azide |
Which of the following is the correct option ?
$(a)\quad (b)\quad (c) \quad (d)$