(A) Troposphere
(B) Thermosphere
(C) Troposphere and Stratosphere
(D) Mesosphere
Tag: Inorganic Chemistry
In Pakistan and other countries which of the following methods is used in manufacture of sulphuric acid?
(A) Frasch method
(B) Haber’s process
(C) Contact process
(D) Ostwald’s method
Process of smelting and cooling converts pig iron into?
(A) Steel
(B) Wrought Iron
(C) Cast Iron
(D) Silicon steel
Pure iron is obtained by the reduction of which of the followings in the blast furnace?
(A) Megnetite
(B) Limonite
(C) Iron Oxide
(D) Haematite
Which substance is known as oil of vitriol?
(A) Hydrochloric Acid
(B) Nitric Acid
(C) Sulphuric Acid
(D) Hexane
Hypochlorous acid HClO is unstable and readily liberates:
(A) CIO
(B) Atomic Oxygen
(C) Atomic Chlorine
(D) Atomic Hydrogen
Space rockets use fuel which is liquid oxygen mixed with liquid?
(A) Nitrogen
(B) Chlorine
(C) Hydrogen
(D) Helium
Which method is used for the purification of bauxite containing excess of silica SiO2 as an impurity?
(A) Hoope’s Method
(B) Serpek’s Method
(C) Baeyer’s Method
(D) Hall’s Method