(a) Remains saturated
(b) supersaturated
(c) Unsaturated
(d) None of these
Answer:
Difference between crystalloids and colloids is of
(a) Size of particles
(b) Solubility
(c) Reactivity
(d) None of these
Answer:
The adsorption of hydrogen by palladium is called
(a) Occlusion
(b) Hydration
(c) Hydrogenation
(d) Reduction
Answer:
The separation of colloidal particles from those of molecular dimensions is called
(a) Peptization
(b) Pyrolysis
(c) Photolysis
(d) Dialysis
Answer:
Vanishing cream is an example of a
(a) True solution
(b) Foam
(c) Solid emulsion
(d) Lyophilic sol
Answer:
Calamine is an ore of
(a) Cu
(b) Fe
(c) Zn
(d) Ag
Answer:
When ore is heated generally in absence of air then process is called
(a) Smelting
(b) Calcination
(c) Roasting
(d) None of these
Answer:
Which of the following metal is obtained by leaching its over with dilute cyanide solution?
(a) Zinc
(b) Vanadium
(c) Silver
(d) Titanium
Answer:
Which of one of the following metals is extracted by thermal reduction process?
(a) Aluminium
(b) Magnesium
(c) Copper
(d) Iron
Answer:
The mineral containing titanium occurring in India is
(a) Illmenite
(b) Bauxite
(c) Chalcopyrite
(d) Dolomite
Answer: