SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Dull, good insulator, brittle
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Dull, good conductors, malleable
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Shiny, good conductors, malleable
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shiny, good insulator, malleable
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Detailed explanation-1: -Metals are lustrous, malleable, ductile, good conductors of heat and electricity. Other properties include: State: Metals are solids at room temperature with the exception of mercury, which is liquid at room temperature (Gallium is liquid on hot days).
Detailed explanation-2: -Metals are lustrous (or shiny), and can be polished:-Any shining surface is called as lustrous. For example, gold, silver and copper are shiny metals and they can be polished. The property of a metal of having a shining surface is called ‘metallic lustre’.
Detailed explanation-3: -Malleability is the ability of a metal to be hammered into thin sheets. When a piece of hot iron is hammered it takes the shape of a sheet. The property is not seen in non-metals. Example are Gold and silver which are highly malleable.
Detailed explanation-4: -high melting points. good conductors of electricity. good conductors of heat. high density. malleable. ductile.