(A) Lead and Zinc
(B) Lead and Bismuth
(C) Lead and Antimony
(D) Lead and Copper
Tag: Inorganic Chemistry
Impure camphor is purified by?
(A) Fractional distillation
(B) Fractional crystallization
(C) Sublimation
(D) Steam distillation
Aluminium can be purified from?
(A) Distillation
(B) Oxidation
(C) Ozonolysis
(D) Electrolysis
Pasteurisation of milk means?
(A) Heating of milk to above 700 C
(B) Heating of milk to above 620 C
(C) Cooling of milk to about 620 C
(D) Cooling of milk to about 100 C
Among following iron ores highest percentage of iron content is found in?
(A) Limonite
(B) Magnetite
(C) Hematite
(D) None of the above
Heat resistant variety of glass is?
(A) Flint glass
(B) Hard glass
(C) Pyrex glass
(D) None of the above
Which among the following is radioactive?
(A) Strontium
(B) Thorium
(C) Platinum
(D) Cesium
Cathode of a lead storage battery is made up of?
(A) Lead oxide
(B) Lead
(C) Zinc
(D) Manganese dioxide