In a roasting process, the set of conditions that favour sulphate formation from metal sulphide concentrates are.
P. high temperature
Q. high partial pressure of oxygen
R. use of excess air
S. high partial pressure of SO₃

A. electrolytic reduction of TiCl₄ B. calcium reduction of TiCl₄ C. magnesium reduction of TiCl₄ D. thermal dissociation of TiCl₄

A. Both A and R are correct, but R is not the correct reason for A B. Both A and R are false C. Both A and R are correct and R is the correct reason for A D. A is true but R is false

A. Atomic number: 30, Atomic weight: 65.38 B. Density: 7.13 gm/cm³ C. Melting point: 419.5°C, Boiling point: 910°C D. All are correct

A. P-2, Q-3, R-4, S-1 B. P-4, Q-2, R-3, S-1 C. P-3, Q-4, R-2, S-1 D. P-1, Q-3, R-2, S-4