Chemical Process - Study Mode
[#131] Absorption of SO 3 in 97% H 2 SO 4 is
Correct Answer
(A) Exothermic
[#132] The most reactive allotropic form of phosphorus is __________ phosphorus.
Correct Answer
(B) Yellow
[#133] Phosphoric acid is prepared from
Correct Answer
(C) Rock phosphate
[#134] Hydrogen gas is not produced commercially (for nitrogeneous fertiliser manufacture) by
Correct Answer
(A) Iron-steam reaction
[#135] __________ is an ore concentrating metallurgical process involving a chemical change.
Correct Answer
(C) Roasting