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SET-1
SET-2
SET-3
1.
Magnetite is
A.
Fe2CO3
B.
Fe3O4
C.
Fe2O3
D.
2Fe2O3.3H20
Answer :
Answer & Solution
2.
German silver contains following metals
A.
Copper, Zinc, Aluminium
B.
Zinc, Silver, Nickel
C.
Copper, Zinc, Nickel
D.
Copper, Zinc, Silver
Answer :
Answer & Solution
3.
Bronze is an alloy of
A.
Tin and Zinc
B.
Iron and Zinc
C.
Copper and Tin
D.
Copper and Zinc
Answer :
Answer & Solution
4.
An alloy used in making heating elements for electric heating devices is
A.
Silver
B.
German silver
C.
Alloy steel
D.
Nichrome
Answer :
Answer & Solution
5.
Most important ore of lead is
A.
Magnetite
B.
Pyrolusite
C.
Galena
D.
Siderite
Answer :
Answer & Solution
6.
Amalgam is an alloy in which the base metal is
A.
Aluminium
B.
Mercury
C.
Copper
D.
Zinc
Answer :
Answer & Solution
7.
Of the following commonly used materials, the one that is not an alloy is
A.
Copper
B.
Bronze
C.
Steel
D.
Brass
Answer :
Answer & Solution
8.
Type of metals used in printing, is an alloy of
A.
Lead and Bismuth
B.
Lead and zinc
C.
Lead and Copper
D.
Lead and Antimony
Answer :
Answer & Solution
9.
The ore of Aluminium is
A.
Fluorspar
B.
Haematite
C.
Chalco Pyrites
D.
bauxite
Answer :
Answer & Solution
10.
Which of the following metal forms Amalgam with other metals?
A.
Copper
B.
Mercury
C.
Lead
D.
Zinc
Answer :
Answer & Solution
11.
Ruby and Sapphire are the oxides of
A.
Bronze
B.
Brass
C.
Iron
D.
Aluminium
Answer :
Answer & Solution
12.
Fuse wire is made of an alloyof
A.
Lead and Copper
B.
Copper and silver
C.
Tin and Lead
D.
Tin and Copper
Answer :
Answer & Solution
13.
Aluminium is extracted from
A.
Mica
B.
Bauxite
C.
Gold
D.
Copper
Answer :
Answer & Solution
14.
Brass contains
A.
Copper and silver
B.
Copper and Nickel
C.
Copper and Zinc
D.
Copper and Tin
Answer :
Answer & Solution
15.
Which one of the following Mineral does not contain oxygen?
A.
Bauxite
B.
Haematite
C.
Cryolite
D.
Answer :
Answer & Solution
16.
The material used in electric heater is _____
A.
Nichrome
B.
Tunsten
C.
Brass B) steel C) Nichrome D) Tunsten
D.
steel
Answer :
Answer & Solution
17.
Uraninite is an ore/mineral of
A.
Aluminium
B.
Titanium
C.
Zinc
D.
Uranium
Answer :
Answer & Solution
18.
Which of the following does not contain silver?
A.
Lunar Silver
B.
Ruby silver
C.
German Silver
D.
Horn Silver
Answer :
Answer & Solution
19.
Which one of the following is an iron ore?
A.
Magnetite
B.
Bauxite
C.
Nitrite
D.
Lignite
Answer :
Answer & Solution
20.
Percentage of carbon in steel ranges from
A.
3.0 - 4.0
B.
4.0 – 6.0
C.
0.1-1.5
D.
1.5-3.0
Answer :
Answer & Solution
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