Elements and Substances

Elements and Substances
Copper wire is an example of
an alloy
a mixture
an element
a compound
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Elements and Substances
Oxides of non metals are _______ in nature
Basic
Acidic
Neutral
All of these
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Elements and Substances
Gold is used in
Fuel
Jewellery
Machinery
Thermometers
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Elements and Substances
Which one of the following metal reacts vigorously with oxygen and water?
Sodium
Calcium
Potassium
Magnesium
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Elements and Substances
Which gas are produced when metal react with acids
Oxygen
Nitrogen
Hydrogen
Carbon dioxide
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Elements and Substances
Sn is symbol of
Tin
Lead
Silicon
Selenium
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Elements and Substances
Sodium metal is stored in
Ether
Water
Alcohol
Kerosene
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Elements and Substances
A particle may be
an atom
an isotope
a molecule
all of these
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Elements and Substances
Symbol of Magnesium is
M
Hg
Mn
Mg
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Elements and Substances
Which material show shiny appearance?
Coal
Carbon
Sulphur
Aluminium
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