Ionic Equilibrium PYQs Set 10 (PDF)

Set 10 of 10 · Questions 271-274 of 274

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Mere Teacher · Previous Year Questions JEE Main Chemistry · Ionic Equilibrium · Set 10 (Q271-274)
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271. $If α is dissociation constant, then the total number of moles for the reaction, 2 H I \to H_{2} + I_{2} will be$ (1) $1$ (2) $1 - α$ (3) $2$ (4) $2 - α$ 272. $Which one of the following is correct?$ (1) $The equilibrium constant K_{C} is independent of temperature.$ (2) $The value of K_{C} is independent of initial concentrations of reactants and products.$ (3) $At equilibrium, the rate of the forward reaction is twice the rate of the backward reaction.$ (4) $The equilibrium constant (K_{c}) for the reaction. Ni (s) + 4 CO (g) ⇌ Ni (CO)_{4} (g) is, \frac{( Ni ( CO ) _{4} )}{[ CO ]} .$ 273. $When the hydrogen ion concentration [H^{+}] changes by a factor of 1000, the value of pH of the solution$ (1) $increases by 1000 units$ (2) $decreases by 3 units$ (3) $decreases by 2 units$ (4) $increases by 2 units$ 274. $Ammonia is a Lewis base because it is$ (1) $Electron pair donor$ (2) $Electron pair acceptor$ (3) $Proton donor$ (4) $Proton acceptor$