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Question-1
Non-metals react with halogens to give

(A) Ionic halides	(B) Covalent halide
(C) Metallic halide	(D) Neutral halides

Question-2
Non-metals are

(A) Electropositive elements	(B) Electronegative elements
(C) conductors	(D) Sonorous

Question-3
Which can act both oxidising as well as reducing agent?

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

Question-4
Which metal is used for electrical heating element?

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

Question-5
Metals have

(A) Different colours	(B) Softness
(C) High tensile strength	(D) Different physical states

Question-6
Which non-metal is the hardest natural substance known?

(A) Graphite	(B) Diamond
(C) Phosphorous	(D) Sulphur

Question-7
If the density of the ore is less,______________ method is used.

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

Question-8
The removal of the unwanted earthly materials from an ore is called

(A) Crushing and pulverisation of the ore	(B) Concentration of ore
(C) Extraction of metal	(D) Refining of metal

Question-9
Which is used for making cutlery,utensile,ornamental pieces and some other instrument and apparatus?

(A) Steel	(B) Stainless steel
(C) Alnico	(D) Nichrome

Question-10
A mineral from which a metal can be extracted on a commercial scale economically and easily, is called

(A) Ores	(B) Minerals
(C) Free metal	(D) Couple

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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