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The equilibrium constant $(K_{c})$ for the reaction $N_{2}(g)+O_{2}(g)→2NO(g)$ at temperature T is $4×10_{−4}$. The value of $K_{c}$ for the reaction, NO(g) $→$ ½ $N_{2}(g)$ + ½ $O_{2}(g)$ at the same temperature is

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Four species are listed below i. $HCO_{3}$ (ii) $ii<iii<i<iv$ iii. $HSO_{4}$ iv $HSO_{3}F$ Which one of the following is the correct sequence of their acid strength ?

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In context with the industrial preparation of hydrogen from water gas $(CO+H_{2})$, which of the following is the correct statement ?

If $D=∣11111+x1111+y∣f o rx=0,y=0$then D is