MCQ
Which of the following halogen oxides is ionic
- A$Cl{O_2}$
- B$Br{O_2}$
- C${I_2}{O_5}$
- ✓${I_4}{O_9}$
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$C _2 H _4( g )+3 O _2( g ) \rightarrow 2 CO _2( g )+2 H _2 O ( l )$ the amount of heat produced as measured in bomb calorimeter is $1406\,kJ\,mol { }^{-1}$ at $300\,K$. The minimum value of $T \Delta S$ needed to reach equilibrium is $(-).......\,kJ$. (Nearest integer) Given : $R =8.3\,JK ^{-1} mol ^{-1}$

| List-I (Compounds) | List-II (Catalyst/Reagents) | |
| (A) | ![]() | NaOH (aqueous) |
| (B) | ![]() | $\quad H _2 / Ni$ |
| (C) | $R - C \equiv N$ | $LiAlH _4, H _2 O$ |
| (D) | ![]() | $Sn , HCl$ |

$S + HNO_3 \rightarrow H_2SO_4 + 6NO_2 + 2H_2O$