The incorrect expression among the following is

• 

• In isothermal process
  
  

• 
• 

C.

Option C has incorrect expression. The correct expression is,

The species which can best serve as an initiator for the cationic polymerization is

• LiAlH₄

• HNO₃

• AlCl₃

• BaLi

The standard reduction potentials for Zn²⁺/ Zn, Ni²⁺/ Ni, and F²⁺/ Fe are –0.76, –0.23 and –0.44 V respectively. The reaction X + Y²⁺ → X ²⁺ + Y will be spontaneous when

• X = Ni, Y = Fe

• X = Ni, Y = Zn

• X =Fe, Y= Zn

• X = Zn, Y = Ni

The equilibrium constant (Kc) for the reaction, N₂(g) + O₂ (g) → 2NO (g) at temperature T is 4 x 10-4. The value of Kc for the reaction  at the same temperature is

• 0.02

• 2.5 x 10²

• 4 x 10^-4

• 50.0

D.

50.0

The compressibility factor for a real gas at high pressure is

• 
• 
• 
• 

C.

Vander Waal's equation for one mole of real gas is