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Elements and Substances
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Elements and Substances
Naturally occurring elements are
91
92
93
94
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Elements and Substances
Most common classifications of elements in periodic table are, metal and
solid
liquid
non-metal
non-elastic
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Elements and Substances
Which one of the following is non metal?
N
Fe
Br
Na
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Elements and Substances
Aluminium foil used for wrapping
Wires
Food
Plastic
Clothes
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Elements and Substances
Which gas produced by piece of burning charcoal?
CO
O2
CO2
H2S
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Elements and Substances
Which one of the following are very reactive non metals
Carbon
Sodium
Potassium
Phosphorous
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Elements and Substances
A compound is a
pure substance
substance with varying boiling points
a substance with varying melting points
an impure substance due to various elements
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Elements and Substances
Symbol of Mercury is
Me
Mg
Mr
Hg
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Elements and Substances
Which of the following non metal is lustrous?
Chlorine
Diamond
Iodine
Both B and C
Diamond and iodine are non-metals which are lustrous. Generally Non-metals do not have luster. They do not reflect light from their surface and they have dull appearance.
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Elements and Substances
Smallest metal name in period table is Tin with a symbol of
Ti
Fe
Tn
Sn
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