ICSE/ISC Std 8 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
If the density of the gangue is less what method is used ?

(A) Gravity seperation method	(B) Magnetic separation method
(C) Froth flotation process	(D) Leaching process

Question-2
Which is the special property of metals?

(A) Different colours	(B) Malleability
(C) Softness	(D) Low tensile strength

Question-3
Which metal is used for electrical heating element?

(A) Nichrome	(B) alnico
(C) bronze	(D) brass

Question-4
Which one displaces bromine from bromides and iodine from iodides?

(A) Chlorine	(B) Oxygen
(C) Sulphur	(D) Phosphorous

Question-5
Ores usually contain unwanted earthly materials called

(A) Gangue	(B) Flux
(C) Slag	(D) Impurity

Question-6
A homogenenous solid mixture of metal with other metal or with a non- metal is called

(A) ore	(B) mineral
(C) complex	(D) alloys

Question-7
Which one of the following is used for making cooking utensils,boilers,kettles etc?

(A) copper	(B) gold
(C) sulphur	(D) sodium

Question-8
Under normal pressure,all metals except mercury are

(A) Solids	(B) Liquids
(C) Vapours	(D) Colloids

Question-9
Bauxite is purified by which method?

(A) Wacker's process	(B) Hall's process
(C) Bayer's process	(D) Oxo process

Question-10
The oxides of metals are

(A) Acidic	(B) Basic
(C) Neutral	(D) Peroxide

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Std 8

ICSE/ISC

Practice in Related Chapters
Hydrogen
Structure of Atom
Transformation of Substances
Metals and nonmetals
Carbon and its Compounds