Which of the following match are incorrect:-

(a) Goldschmidt aluminothermite process-Cr₂O₃

(b) Mac Arther cyanide process - Fe

(c) Mond process - Ni

(d) Van Arkel process – Au

x, y and z are respectively :-

In which of the following reaction H₂O₂ acts as a reducing agent ?     

(a) H₂O₂ + 2H⁺ + 2e^– → 2H₂O 

(b) H₂O₂ – 2e^– → O₂ + 2H⁺  

(c) H₂O₂ + 2e^– → 2OH^–     

(d) H₂O₂ + 2OH^– – 2e^– → O₂ + 2H₂O

Which of the following reaction(s) proceeds for not completion of octet?

Two gases in adjoining vessels were brought into contact, by opening a stop cock between them, one vessel contains 0.25 litre volume of NO at 800 torr at 220 K, the other measured 0.1 litre and contained O₂ at 600 torr at 220 K. The reaction to form N₂O₄(s) exhausts the limiting reactant completely. Neglecting the vapour pressure of N₂O₄, What mass of N₂O₄ is formed :-

10 mol of an ideal gas is heated at constant pressure of 1 atmosphere from 27°C to 127°C.

If C_v,m = (20 + 10^–2T) JK^–1 mol^–1 then ΔH for the process is :-

Activation energy of forward and backward process of a reaction are 60 kJ mol^–1 and 40 kJ mol^–1 respectively. Which of the following are true for the reaction?

If all the atoms touching one face plane are removed in solid NaCl, then the formula of the compound left and the defect is given by :-

The acid ionisation of hydrated zinc ions is

Zn(H₂O)₆²⁺(aq) + H₂O(ℓ) ⇌ (O)₅OH⁺(aq) +H₃O⁺(aq)

and K_a is 1.25 × 10^–10. The pH of 0.8 M aqueous solution of ZnCl₂ is [log 2 = 0.3]

When a direct current source is passed through colloidal iron (III) hydroxide, using inert electrode,