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Class 8 Science
Materials: Metals And Non-Metals
Quiz 1
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The property of metal by which it can be drawn into wires is called Ductility
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True
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False
Phosphorus is stored in Water
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True
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False
Which of the following is a liquid at room temperature?
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Iron
0%
Bromine
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Iodine
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Phosphorus
Explanation
Bromine
The most reactive metal is
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copper
0%
silver
0%
potassium
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calcium
Explanation
potassium
The metal which is liquid at room temperature is
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sodium
0%
bromine
0%
calcium
0%
mercury
Explanation
mercury
Which one of the following metals is the most ductile?
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Aluminium
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Copper
0%
Silver
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Gold
Explanation
Gold
Which one of the following metals is the most reactive and stored in kerosene?
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Iron
0%
Gold
0%
Copper
0%
Potassium
Explanation
Potassium
Name the gas evolved when magnesium reacts with dilute hydrochloric acid
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Chlorine
0%
Oxygen
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hydrogen
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Nitrogen
Explanation
hydrogen
The metal which is not corroded by air, water and acid is
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copper
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zinc
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aluminium
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gold
Explanation
gold
Metals are
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soft and brittle
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hard and solid
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liquid
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generally liquid
Explanation
hard and solid
Materials having qualities of both metals and non-metals are
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alloys
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metalloids
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noble metals
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none of these
Explanation
metalloids
Which metal reacts readily with cold water?
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Gold
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Silver
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Magnesium
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Calcium
Explanation
Calcium
The best electrical conductor is
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gold
0%
copper
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silver
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aluminium
Explanation
silver
Iron is galvanised by coating it with
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chromium
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sodium
0%
magnesium
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zinc
Explanation
zinc
Out of these, which one is more reactive with water?
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Sodium
0%
Magnesium
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Iron
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Copper
Explanation
Sodium
Boron is
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metal
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metalloid
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non-metal
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alkali
Explanation
metalloid
A mineral from which. a metal can be extracted on the commercial scale, economically is called
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ore
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metalloid
Explanation
ore
Which of the following metals is in the liquid state at room temperature?
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mercury
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aluminium
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Potassium
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sodium
The metal which is stored in Kerosene
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Magnesium
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Sodium
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zinc
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Cooper
Brass is an alloy of
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Cu and Sn
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Zn and Cu
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Pb and Sn
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Cu and C
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